2 oop E re Scazine SU ltu ag IS uacurly m Aq rte of qua
Issue 2 May 2013
COOLER MAINTENANCE by John Doud of Insta Pro International
OPTIMIZATION OF MOISTURE CONTENT IN FEED
by Olafur H Jonsson, Intelscan ehf, Iceland
WE TAKE A LOOK AT THE INSTITUTE OF AQUACULTURE, STIRLING, UK
UPCOMING EVENTS FOR 2013
EDITORIAL Welcome to our second issue of Aquaculture Scoop. With articles this issue from Geelen Counterflow, Wenger Manufacturing, IntelScan and Insta-Pro International, we look at cooling, drying and moisture control of aquafeeds. Our news editor Martin Little visited the Institute of Aquaculture in Stirling, in March and gives us an insight into the institute’s background and some of the research they are involved in now. Keep up to date with all industry events by visiting http://aquaculturedirectory.co.uk/aquaculture-events-2/. If you have a topic that you would like to see covered, why not get in touch with us.
CONTENTS
Published by Nisa Media Ltd 14 Clarke Way Cheltenham GL50 4AX United Kingdom
Post Conditioning, Drying and Cooling of Shrimp Feeds 4
Editorial Manager Nicky Barnes Tel: +44 117 2306494 Email: nbarnes@aquaculturedirectory.co.uk International Marketing Manager Sabby Major Tel: +44 117 2306493 Email: smajor@aquaculturedirectory.co.uk News Editor Martin Little Email: mlittle@aquaculturedirectory.co.uk Designed By Avalon Creative Email: aim-mdma@hotmail.com Web: avaloncreative.co.uk
Cooling Technology For Aquatic Feeds 6 Optimization of Moisture Content in Feed
12
Cooler Maintenance 14 A look at the Institute of Aquaculture, Stirling 15 Events 2013 17
www.aquaculturedirectory.co.uk
More information: Geelen Counterflow Peter Schreursweg 38 6081 NX Haelen The Netherlands Tel: +31 475 592 315 Web: www.geelencounterflow.com
POST CONDITIONING, DRYING AND COOLING OF SHRIMP FEEDS by Peter Sillen, Geelen Counterflow, The Netherlands
G
eelen Counterflow, world leading manufacturer of vertical counterflow dryers and coolers, has a complete solution for the process from post-conditioning to drying and cooling of pelleted shrimp feeds. Shrimp require sinking feed and will not consume disintegrated pellets. As a result, shrimp feed should have a high water stability, otherwise too much feed is lost and water pollution becomes an issue. One solution to increase water stability has been to add more binders to the product. However, binders are expensive ingredients and for over 20 years the post conditioner is a proven technology to improve starch gelatinization.
as opposed to the previous steam heating, which enables a more uniform heating of the walls, avoiding not only colder spots but also hot spots that burned product laying against the wall. Insulation is much improved in order to utilize as much as possible of the energy (temperature) which the pellets have received during the pelleting process, reducing energy costs of the post conditioner to a bare minimum. Retention time is determined by height and surface of the Post Conditioner, which is chosen to meet your requirements. For very long retention times a double deck version has been developed. One important lesson has been that leakages in Post Conditioners should be absolutely avoided. First of all, leaking air will reduce the product temperature and hence the conditioning efficiency. Secondly, leakages cause condensation, resulting in wet pellets and product quality problems, as well as water getting trapped between the walls and insulation. Therefore the MkII Post Conditioner has been fully welded from the inside to ensure it is closed. The insulation material has a closed cell structure, that doesn’t absorb water. All product contact parts are minimum stainless steel AISI 304, whereas many contact parts are even in AISI 316. The robust swivel valve discharge system, driven by hydraulic cylinder and power pack, is gentle to the pellets and can handle even sticky products. For customers wanting to further increase temperatures compared to those at the pellet mill exit, there is live steam injection on top of the product layer inside the Post Conditioner. Because this increases the moisture level of the pellets, the product also requires drying.
Counterflow Dryer
Post Conditioner After leaving the pellet mill, a high temperature environment is preserved for the pellets. As a result, gelatinization and therefore water stability improves considerably. The need for expensive binders is reduced drastically, resulting in short payback time on your Post Conditioner investment. Together with major shrimp feed manufacturers, Geelen Counterflow has redesigned their original Post Conditioner, with many important detail improvements for the new MkII version. In order to prevent heat loss of product to ambient, the Post Conditioner consists of a double walled insulated and heat traced housing. The new version has electrical heat tracing
As documented by extensive field measurements, Counterfow Dryers no doubt offer the best energy efficiency, which is 2050% better than horizontal dryers. Counterflow not only is the most efficient way to exchange energy between product and air, but Geelen recirculates as much drying air as possible, as well as uses the warm cooler exhaust air for dryer make up air. Drying air can’t take any short cuts in the Counterflow Dryer. Applying counterflow drying technology therefore saves –ever more expensive- energy, but also reduces the total amount of exhaust air into ambient. In those cases where odour treatment of exhaust air is required, the lower air emissions help reducing the investment for such a system. Due to the vertical gravity product flow, vertical Counterflow Dryers have very few moving parts. As the Geelen dryer also benefits from its simple and sturdy design, down time and costs for maintenance and repairs are extremely limited. All dryer contact parts are stainless steel AISI 304.
Aquaculture Scoop Issue 2 Page 4
In order to ensure a superior control of the drying process, the Geelen Counterflow Dryer offers control of all main parameters involved. These are retention time, drying air temperature and air volume. Air volume control is possible by frequency converters on the air fans, reducing also electrical energy consumption to a minimum.
Counterflow Cooler After the shrimp feeds have been dried, they finally require cooling to maximum 5 degrees C above ambient, in order to be stored safely without the risk of mold or other quality problems. The Counterflow Cooler uses ambient air for cooling the pellets. To guarantee proper cooling, Geelen Counterflow uses proprietary software, as they also have for dryers, to calculate the right machine size and air volumes. Shrimp feed coolers can be supplied with a hydraulic swivel valve system, identical to those on the Post Conditioner and Counterflow Dryer, making fully remote control possible. The swivel valve system allows the handling of pellets as small as 0.8 mm and does not have cross contamination between different pellets or recipes. Alternatively, for bigger pellets, the original grid type counterflow cooler can be offered, providing lower investment costs, but still with the normal efficiency and reliability that are appreciated by Geelen Counterflow customers worldwide. Finally, the Geelen Counterflow PLC control system ensures that the Post Conditioner, Dryer and Cooler are easy to use in the most efficient and safe way.
Aquaculture Scoop Issue 2 Page 5
More information: Wenger Manufacturing, Inc. 714 Main St. Sabetha, KS 66534 USA Web: www.wenger.com
COOLING TECHNOLOGY FOR AQUATIC FEEDS by Joe Kearns, Wenger Manufacturing, Inc, USA, Email: jkearns@wenger.com
C
ooling of aquatic feeds is just as important as the other processes in the system and is the one mostly overlooked. Reviewing briefly, the typical system for extrusion of aquatic feeds included the raw material preparation area, the extrusion cooker, a drying system, cooling and coating. Looking as these independently gives a better understanding of the needs in the cooling area. The raw materials are selected for the animal to be fed and directly affect the final feed. Is the final product a floating feed, sinking feed, semi-moist feed, vacuum coated with high oil levels, ultra small diameter, medium diameter or in some cases very large in diameter or possibly combinations of all of the above which can be usually made on the same production system? The extrusion system is set up to produce the feed selected. One of the overall goals of extrusion in the case of aquatic feeds is to be very exact and consistent. When making floating feeds all of the pellets should float and vice versa when making sinking feeds, all should sink. Evenness in the production process is an advantage and the moisture level in each pellet is one of the critical parameters in making all the pellets with the same characteristics. Assuming the extruder has produced a volume of pellets and is doing so continuously the stream is then directed to a continuous dryer. The industry standard for drying is such that the moisture of the pellets is +/- 0.5% with regards to the moisture variance at the end of the dryer. This is another critical parameter. When making aquatic feeds if the moisture varies at this point then the ability of the individual pellets to pick up oil in the coating system also varies. If the moisture in each pellet varies the pellet density varies. The evenness or coefficient of variance, of all aspects of the pellets again is an important factor throughout the process. The same relates to the cooling process. Coating is required in most cases after drying and can be applied at this point, on hot pellets. Sometimes the pellet is cooled before coating, depends on the amount of coating and the coating process. In general, if partial cooling is preferred before coating then the pellets are slightly cooled, coated and then cooled on a final basis. If the pellets are not going to
Polyester
be heavily coated then total cooling is possible before a light coating is applied. In summary, coating can be done on hot pellets, semi cooled pellets and completely cooled pellets. This depends on the final product characteristics defined for the product. The art of cooling is generally accepted as the process where the pellets are reduced in heat until the product will not sweat in a bin or sealed package. Typically this state is achieved if the pellets are below 15 degrees F above ambient temperature. As an example if it is 95 degrees F in the plant then the pellets need to be cooled to within 110 degrees F. For most of the world the same example is 35 degrees C in the plant then the pellets need to be cooled to within 43.3 degrees C or a difference of 8.3 degrees C. This is a critical control point as sweating in the bag causes wet spots and possibly mold development. Having stated this it is recommended to do a test to see if this parameter is sufficient for your area. What are the style coolers available in the industry? There are 3 basic designs used today and they are counter flow coolers with specialized controlled moving grids or other devices which allow for controlled flow or product discharge. Consult with manufacturers of these designs where triple grids or swivel grid discharge systems are used for additional information. Additional styles are the horizontal moving bed style dryer and the counter flow conical design with no moving parts to create fines on discharge. These two will be covered in additional detail. Horizontal coolers are usually an extension of a horizontal dryer or a stand-alone system. When used as an extension of an existing dryer the cooler can partially reduce the product temperature prior to external coating application. In these cases an additional cooler is used normally a vertical design for final cooling before packaging. The horizontal design cooler consists of a moving tray on conveyor chains with an option for selection of bed styles. Typically you see perforated holes of different diameters, slotted holes with a variation of dimensions and polyester mesh screens with different openings per linear distances.
Overlapping Perforated Horizontal Cooler Bed Conveyor Designs
Aquaculture Scoop Issue 2 Page 6
Hinged Slotted
AquaDirect
A new blog from NISA Media Ltd, bringing together news stories from around the world.
On this new blog we will be looking at all aspects of the aquaculture industry, as well as covering news from the fishing industry. Read about events, aquafeed, veterinary news, and recirculation’s systems to open ocean pen farming, looking at new technologies, from around the world. AquaDirect runs side by side with our online resource Aquaculture Directory, publishing press releases form key companies and key figures in the aquaculture industry, book releases and information from global sources. As well as covering stories from countries and companies developing new aquaculture farms and technologies and feed development to deliver, a sustainable food source for the Global
Keep up to date with the latest news at http://aquaculturedirect.blogspot.co.uk/ Aquaculture Scoop 6
AQUA NOR 2013
InternatIOnaL eXHIBItIOn, 13- 16 august, trOndHeIm, nOrWaY
AQUACULTURE EXHIBITION IN DENMARK AALBORG CONGRESS & CULTURE CENTRE 9, 10 AND 11 OCTOBER 2013 – it’s so ”Don’teasyworry to get to Aalborg
FOCUS ON THE FUTURE!
Get to know the latest and most advanced aquaculture technology. Meet practitioners from over 50 countries and expand your network. International conferences and seminars before and during Aqua Nor will focus on new research and opportunities in the aquaculture industry. Exhibitor, visitor or conference participant? www.nor-fishing.no
AQUA NOR - the most important international venue for the aquaculture industry.
”
DanAqua is the exhibition of the future for the fish farming sector. It offers producers and other suppliers to the aquaculture sector an outstanding opportunity to come into contact with affluent guests from all corners of the world. Make the most of the synergy between DanFish and DanAqua and save on your marketing costs, because now it is no longer necessary to take part in several exhibitions - all customer segments will be coming to Aalborg. DanFish is one of the world’s most important exhibitions for equipment and services for the fisheries industry and a unique forum for networking among the international exhibitors and visitors.
The Nor-Fishing Foundation
danaqua.net · danfish.com Book a stand: Lasse H. Jessen, tel. +45 9935 5509, lhj@akkc.dk Else Herfort, tel. +45 9935 5518, ehe@akkc.dk
Tlf +47 73 56 86 40, Fax +47 73 56 86 41, mailbox@nor-fishing.no Aquaculture Scoop Issue 2 Page 7
PAY-OFF.DK
In 2011, DanFish welcomed 350 exhibitors from 25 countries and more than 13,000 visitors, including a number of invited key buyers from all corners of the world.
Horizontal coolers as well as dryers have the advantage that the horizontal bed has a very exacting retention time control by controlling the bed speed. Bed speed also allows for control in product depth on the conveyor bed. Air flow can be adjusted to increase or decrease the velocity of the air as it passes through the product. Selection of the bed style allows for various amounts of possible open area selection as well as considerations for the style of product. Mesh screens are used for the small diameter products while larger particle products generally use the steel tray design in either galvanized or stainless steel construction. Polyester mesh can be used for all product sizes while perforated or slotted designs would have product diameter limitations. Small diameter pellets can’t be cooled on a bed with perforations larger than the pellet diameter. In general cooler size is an available square foot or meter area versus volume of product per hour calculation therefore they are constructed in various lengths and widths. The product specifications as well as lab tests assists in defining the width and length requirements of the cooler. Various air velocities are used simply based on the density of the product so as to keep it in place on the product bed. Horizontal coolers are also ideal for use on advanced or complex product shapes and semi-moist products due to possible bridging of the product in vertical designs.
at the top of the cone where the hottest product enters the system. As the product moves to the discharge the conical area is reduced and the cooling effect increases insuring the final discharge of completely cooled product.
Vertical counter flow cooler designs are excellent for reducing overall operating costs while maintaining consistent product cooling. The Extru-Tech, Inc. design features an internal perforated core and external air plenum cone within the double wall, counter-flow construction. Minimal moving parts, reduces downtime and maintenance cost and these units are ideally suited to a wide variety of products and applications and are exceptional for handling of high fat pet food and aquatic feeds of 2.5 mm diameter and above. Vertical coolers require less floor space than that of horizontal tray cooler designs. The conical cone design offers the initial cooling in the larger area
View it online at
www.aquaculturedirectory.co.uk
Aquaculture Scoop Issue 2 Page 8
OPTIMIZATION OF MOISTURE CONTENT IN FEED
Optimizing moisture content in feed is very important from an economic point of view. It is also very important to maintain correct feed quality. However, too much moisture leads to rapid mould development. by Olafur H Jonsson, Intelscan ehf, Iceland Two factors make this optimization process even more important:
mization of ture content in
Optimizing moisture content in feed is very important from an
y Olafur H Jonsson, n ehf, Iceland
-‐ economic Agricultural prices have not been higher for the point of view. It is also very important to maintain last feed 40 yquality. ears. However, The raw too material needs tleads o be to rapid correct much moisture mould development. utilized efficiently in the feed production process. -‐ Two Energy prices continuing to rise. Tmore his mimportant: eans factors make thisare optimization process even the running configuration of all equipment - Agricultural prices have not been higher for the last 40 years. including the needs cooler, eeds to befficiently e optimized give The raw material to nbe utilized in theto feed production process. the correct moisture content of the final feed. - Energy prices are continuing to rise. This mans the running
Correct oisture ontent f feed bincluding efore the p elletizing will m configuration of all the cooler, needs to ure content in fceed is equipment voery important from ebe optimized toogive the correct of reduce nergy usage f the press. Hmoisture owever, content the added nt of v iew. final It is also very important to feed. bonus of the energy savings is that quality of pellets in terms of feed qhuality. Hhas owever, too tm uch moisture pellet Correct ardness bcontent een found o before be improved when will moisture of feed the palletizing uld development. reduce energy usage the press. However, added bonus pressed at the correct mof oisture level. If the the moisture of the energy savings is that quality of pellets in terms of pellet
content before has the been pellet press is improved too low twhen he result can e: hardness found to be pressed atbthe
Impra, Keldnaholti 112 Reykjavik Iceland More information: Tel: +354 5229000 Intelscan ehf, Impra, Keldnaholti 112 Web: www.intelscan.is Reykjavik Iceland Tel: +354 5229000 Web: www.intelscan.is
The iScan online moisture sensor is a scanner measuring moisture content instantly, using microwave technology. Fig.1. iScan online moisture sensor. Measures moisture content instantly. Can also measure density if calibrated.
The advantage of microwave technology compared with near infrared (NIR) systems is that the microwaves are not affected by other constituents such as fat or protein. This means that many different feeds with various recipes can be measured without complicated calibration work. On the other hand, the advantage of NIR systems is that these systems also detect other constituents such as protein and fat, but they need to be calibrated for each recipe. This can of course be laborious for a typical feed plant with over 200 recipes.
e this correct optimization process even content more before the pellet moisture level. If the moisture The oiiScan Scan online online moisture sensor continuously Fig.1. moisture Measures moisture content The iScan nline moisture ssensor. ensor is m a onitors scanner m easuring is too low athe -‐ pressNutrients re result lost acan s a rbe: esult of the increased heat instantly. Can also measuretemperature density if calibrated. the moisture content, and in some cases the moisture content instantly, using microwave technology. in the pellet press
density of the feed in real time. The results are shown in - Nutrients are lost as a result of the increased heat in the pellet press content is reduced as a result of -‐ Moisture the foeed mill´s control srensor. oom. Measures moisture content ural prices have not been higher for the Fig.1. iScan nline moisture increased h eat i n t he p ellet p ress Moisture is reduced as atresult years. - T he raw content material needs o be of increased heatinstantly. Can also measure density if calibrated. in the pellet press
efficiently in important the feed tpo roduction rocess. It is therefore compensate pfor loss of moisture It is therefore important to compensate for loss of moisture that occurs uring grinding cooling prices are cdontinuing to arnd ise. This pmrocess eans of the feed that occurs during grinding and cooling process of the feedThe advantage of microwave technology compared with production, i n o rder t o r each t he f inal t arget moisture in order the final target moisture content for infrared (NIR) systems is that the microwaves are ning cproduction, onfiguration of toareach ll equipment near three reasons: content f or t hree r easons: ng the cooler, needs to be optimized to give not affected by other constituents such as fat or protein. - Efficient utilization of raw material ect m-‐ -oisture content of the inal feed. This means that many different feeds with various recipes Efficient utilization of rfaw material Energy savings pellet quality can be measured without complicated calibration work. -‐ - Better Energy savings content o f f eed b efore t he p elletizing w ill -‐ NewBetter pellet quality On technology makes it easier for the feed milling company to the other hand, the advantage of NIR systems is that control the process better. age of the press. However, the added these systems also detect other constituents such as savings that online quality of psensor ellets terms of Theis iScan moisture is ain scanner measuring protein and fat, but they need to be calibrated for each New tmoisture echnology makes it easier for the feed technology. milling content instantly, using microwave as been found to be improved when recipe. This can of course be laborious for a typical feed company to control the process better. The advantage of microwave compared with near rrect m oisture level. If the technology moisture Software interface fromfrom the iScan moisture sensor. Fig. o 2ver . Software the iScan moisture sensor. Graphs plant wFig.2. ith 200 rinterface ecipes. infrared (NIR) systems is that the microwaves are not affected Graphs in real time of moisture, temperature and density feed. in real time of moisture, temperature and density of of feed. e press is too low he fatresult can be: pellet by other constituents suchtas or protein. This means that Measurement location can be in batch mixer or in cooler. Measurement l ocation c an b e i n b atch m ixer o r i n c ooler. many different feeds with various recipes can be measure The iScan online moisture sensor monitors continuously without complicated calibration work. On the other hand, the ts are advantage lost as aof rNIR esult o f t he i ncreased h eat systems is that these systems also detectthe moisture content, temperature and in some cases the other constituents such as protein and fat, but they need to be ellet press density of the feed in real time. The results are shown in calibrated for each recipe. This can of course be laborious for a typicalifeed plant withaover recipes. e content s reduced s a 200 result of the feed mill´s control room. ed heat the online pellet press Thein iScan moisture sensor monitors continuously the
moisture content, temperature and in some cases the density of the feed in real time. The results are shown in the feed mill’s portant to croom. ompensate for loss of moisture control
g grinding and cooling process of the feed der to reach the final target moisture reasons:
Aquaculture Scoop Issue 2 Page 10
co-located with
The 4th International Pet & Accessories Exhibition
6 Shenton Way #15-08 DBS Building Tower Two Singapore 068809
stella.hwang@ubm.com Ms Stella Hwang
Ms Iman Tam yoshihiro.tomori@ubm.com Mr Yoshihiro Tomori
Ms Meiyu Chou
http://www.intelscan.com
Fig.3. Feed production flow chart. Moisture is measured at beginning and end of the process and water addition into the conditioner Fig.3. Feed pin roduction low chart. Moisture pellet is measured at bcontent eginning nd eof nd cooler. of the process and water addition into the conditioner is is regulated order to freach the optimum moisture ataexit regulated in order to reach the optimum pellet moisture content at exit of cooler. Intelscan has installed several systems to optimize moisture content in feed. A typical system setup is shown above.
The mathematical model then predicts the exact amount of water to dose into the conditioner in litres/ minute.
In the above setup, the iScan sensor measures the moisture Intelscan has installed several systems to optimize content in the mix under the batch mixer. Th information is moisture content AwuaSmart in feed. A tsoftware. ypical system setup is sensor shown sent to Intelscan’s Another iScan above. in the cooler will measure the moisture content of the placed finished pellets. This finished pellet moisture needs to be as close the target moisture as possible. order tothe reach this In the toabove setup, the iScan sensor mIneasures moisture correct target moisture, the AquaSmart software will control the content in the mix under the batch mixer. The information dosing of water into the steam mixer/conditioner. The amount is water sent to ntelscan’s AquaSmart Another iScan of toIadd is calculated using saoftware. mathematical model. The parameters in the are: will measure the moisture sensor placed in model the cooler
Many feed millstuse an expander the iconditioner and By controlling he fan speed in cafter oolers, t is possible to this helps to retain the added water better in the feed. receive an optimal rate of diffusion in the pellets. It should be possible o congoing ontrol tto he optimize air flow pellet and the bed height inside Further worktis moisture content. Intelscan is now working on cooler optimization. the cooler to get the final moisture content on target, as well as having the final temperature out of cooler at By controlling the fan speed in coolers, it is possible to receive ambient level. an optimal rate of diffusion in the pellets. It should be possible
content of the finished pellets. This finished pellet moisture needs to be as close to the target moisture as - Mass throughput in kg/hour in pellet press possible. In order to reach this correct target moisture, the - Pellet press energy consumption AquaSmart software will control the dosing of water into - Heat in the steam mixer the steam mixer/conditioner. The amount of water to add - Cooler inlet air is calculated using a mathematical model. The parameters - Moisture content of pellets in cooler in the model are: - Moisture content of the meal in mixer
-‐
Moisture content of the meal in mixer
to control the air flow and the bed height inside the cooler to get
the final moisture content on target, as well as having the final temperature out of cooler at ambient level.
Aquaculture Scoop Issue 2 Page 12
More information: Insta- Pro International 4043 120th Street Urbandale, IA 50323, USA Tel: +1 515 254 1260 Web: www.insta-pro.com
COOLER MAINTENANCE
er Maintenance by
by John Doud, Research & Development Extrusion
oud, Specialist, Insta Insta-Pro Pro International, International, USA, Email: jdoud@insta-pro.com
ost extruded products is very specially as it relates to the production nd Expelled Soy.
evels of urease and trypsin inhibitors, ring extrusion, can be reactivated if the ent to storage before it is properly will result in poor performance, and estive problems in the animals being uct. It can also cause storage problems ping, discoloration and flowability.
ng can be challenging when outside s are over 100˚F. Industry standards duct going to storage should be less
maximum dwell time in the cooler, you a minimum 2 inch drop from the inlet of the cooler. This adjustment is made he threaded bolts on the bottom of the p and down as needed.
nt to maintain a minimum 2 inch drop. nches can cause overloading, resulting he center shaft, gear box and drive a spower failure, cooler cleaned out Cooling post extruded is very important, especially the product, Inmcase eal cof an tick to and bthe uild up oshould n the be inside eal leakage at of the inlet side oproducts f the drum. as it relates to the production of Full Fat and Expelled Soy. before restarting. Starting the cooler under a load can stress the of the whole main cooling system. shaft to the point of breakage. power fAcceptable ailure, the levels cooler should be trypsin cleaned out achieved of urease and inhibitors, is adjusted with a damper is located in the plenum, during extrusion, can be reactivated if the product is sent to inside oAirflow The f the cooler drum should be cthat leaned at least rting. Starting the cooler under a load can positioned behind the meal inlet. Adjust for as much airflow as storage before it is properly cooled. This will result in poor once a week, as should the fan blades of the fan impeller. ain shaft to the point of breakage. performance, and possible digestive problems in the animals possible, without sucking meal out of the cooler drum. The ducting Check should also be inspected regularly for build-‐ being fed the product. It can also cause storage problems such the cyclone outlet to see how much meal is being steeping, discoloration flowability. pulled through the air ducting. Because of the oily nature of justed as with a damper that is and located in the up, and always make sure the cyclone outlet is open and the product, meal can stick to and build up on the inside of the itioned behind the meal inlet. Adjust for as free flowing. whole cooling system. Proper cooling can be challenging when outside temperatures w as possible, ithout sucking meal o ut that of the are over w 100˚F. Industry standards say product going to storage should be less than 120˚F. The iinside of the drum qshould Proper cooling s critical to cooler maintain uality be in cleaned the at least once a . week, as should the fan blades of the fan impeller. The ducting finished product. So, pay close attention! should also be inspected regularly for build-up, and always To achieve maximum dwell time in the cooler, you should have clone oautlet t o s ee h ow m uch m eal i s b eing minimum 2 inch drop from the inlet to the outlet of the cooler. make sure the cyclone outlet is open and free flowing. Proper cooling is critical to maintain quality in the finished is made o by the threaded the gh the This air dadjustment ucting. Because f tturning he oily nature of bolts on product. So, pay close attention!
bottom of the cooler legs up and down as needed.
It is important to maintain a minimum 2 inch drop. Less than 2 inches can cause overloading, resulting in stress to the center shaft, gear box and drive motor, or meal leakage at the inlet side of the drum.
Aquaculture Scoop Issue 2 Page 14
A look at the Institute of Aquaculture, Stirling The University of Stirling was founded in 1967 by Royal Charter, and was the first genuine new university in Scotland for over 400 years. The University itself is set in stunning grounds, with amazing views. The University is ranked number one in Scotland and eighth in the UK.
nstitute of tirling, UK
The Institute of Aquaculture, founded in 1971, is located in what use to be the main building of the university the Pathfoot building, which has been designated a grade A listed building. I travelled up to Stirling to visit the Institute of Aquaculture, and met with the Institute’s present director Professor Brian Austin. He told me about some of the history of the Institute and about the external facilities. At present the Institute has 110 members of staff, and over 100 postgraduates students. Professor Austin, told me about the cross disciplinary world class research which covers: Reproduction Genetics Aquatic Animal health and Welfare Nutrition Production Systems Environment Markets Social and economic impacts
Stirling has been at the forefront of aquaculture research for many years, as well as being one of the worlds leading aquaculture institutes, they are known worldwide for their research in all the fields of aquaculture.
Professor Brian Austin
Working with other institutes from Europe, Japan, China, Thailand, Vietnam, Bangladesh, Pakistan, South America, Mexico, USA and Canada. In Malawi, the University of Stirling along with a Scottish business and research consortium bringing together the Scotland Malawi Business Group are working together to develop small-scale commercial aquaculture.
unded in 1967 by Royal built aquaculture research facility and fish holding ne new university in located at Machrihanish in Kintyre on the west coa Professor Austin also talked about research the institute is University itself is set in Scotland for marine ish. he told us of a trip he made to involved in on the f sea lice issue, The Institute has three other sites located off the campus, Tahiti where he saw fish being cleaned by wrasse in a lagoon. the Marine Environmental Research Laboratory, a purpose views. T he U niversity i s The University using species of wrasse caught by lobster built aquaculture research facility and fish holding site, located at fishermen have bred them for placement into the sea cages Machrihanish in Kintyre on the west coast of Scotland for marine The Niall Balong romage Freshwater esearch Unit locat with salmon to actively clean theR salmon of sea lice. ranked number one in fish. Buckieburn just Austin outside Stirling ahad temperate Professor showed us a new videois that been produced and Scotland nd eighth in Unit located The Niall BromageaFreshwater Research at for the National Museum of Scotland called Wrasse and Salmon Buckieburn just outside Stirling is a temperate and freshwater freshwater r esearch u nit a nd H owietoun Fnatural ishery w – A Winning Combination. The video shows how utilising research the Uunit K. and Howietoun Fishery which is operated as a methods could be a major advance for the Salmon industry in commercial fishery with brown trout hatchery and an ongrowing and other parts of the world. operated aScotland s a commercial fishery with brown trou farm providing fish for restocking and has been since 1881, its one of the oldest fish farms in Scotland. The Institute of hatchery and an ongrowing farm providing fish for Aquaculture, founded restocking and has been since 1881, its one of the o Aquaculture Scoop Issue 2 Page 15
Also by breeding the wrasse species themselves they are limiting any impact on wild populations in the future and how using this method of treating sea lice infestation there would be little impact on wild salmon or other species in Also by breeding the wrasse species themselves they are the area of the sea cages. limiting any impact on wild populations in the future and how using this ethod of treating sea lice iinfestation there The Institute of Amquaculture also has direct nvolvement would b e l ittle i mpact o n w ild s almon o r o ther s pecies in within the aquaculture industry and they provide disease, the a rea o f t he s ea c ages. nutritional, analytical and environmental services. The Institute Institute oof f AAquaculture quaculture Satirling lso has direct involvement The has a proud history, within t he a quaculture i ndustry a nd t hey p rovide disease, and looks to the future working hand in hand with m any nutritional, a nalytical a nd e nvironmental s ervices. countries and institutes in developing the tools of the future for the global aquaculture industry. As well as being The Institute of Aquaculture Stirling has a proud history, a major force within the aquaculture industry, it is also a and looks to the future working hand in hand with many key teaching and research institute. countries and institutes in developing the tools of the future for the global aquaculture industry. As well as being a major force within the aquaculture industry, it is also a key teaching and research institute.
Machrihanish In Kintyre
The University of Stirling was founde Charter, and was the first genuine ne Scotland for over 400 years. The Univ stunning grounds, with amazing view Machrihanish In Kintyre
Buckieburn in the future and how using this Also by breeding the wrasse species themselves they are limiting any impact on wild populations method of treating sea lice infestation there would be little impact on wild salmon or other species in the area of the sea cages.
Howietoun Fishery
The Institute of Aquaculture also has direct involvement within the aquaculture industry and they provide disease, nutritional, Buckieburn analytical and environmental services.
The Institute of Aquaculture Stirling has a proud history, and looks to the future working hand in hand with many countries and institutes in developing the tools of the future for the global aquaculture industry. As well as being a major force within the aquaculture industry, it is also a key teaching and research institute.
Howietoun Fishery Howietoun Fishery
Aquaculture Scoop Issue 2 Page 16
EVENTS 2013 May
2013
June
2013
July
2013
August
2013
30th May-2nd June Aquarama 2013
16th-20th September Fifth International Conference of the Pan African Fish and Fisheries Association (PAFFA5)
Suntec City, Singapore Web: www.aquarama.com.sg
Guelph, Ontario, Canada Web: www.aquacultureassociation.ca/
23rd-24th September Aquaculture Forum Bremerhaven 20132013, WorkshopIV, Bremerhaven, Germany Email: grabs@bis-bremerhaven.de
3rd-14th June Shrimp Pathology Short Course-Disease Diagnosis and Control in Marine Shrimp Culture
6th-10th October Tenth International Symposium on Tilapia in Aquaculture,
2nd-5th June 4Aquaculture Canada 2013
October
2013
University of Arizona, Tuscan, Arizona, USA Web: http://microvet.arizona.edu/research/aquapath/index.htm
Jerusalem, Israel Web: www.ista10.com
5th-7th June Indo Livestock 2013 Expo & Forum,
7th-9th October Fish & Fish Tech Exhibition
Bali, Indonesia Web: www.indolivestock.com
Cairo, Egypt Web:www.facebook.com/groups/globalfishconf/
21st-25th July 7th International Symposium on Sturgeon
8th-10th October LAQUA13 Latin American & Caribbean Aquaculture 2013,
Nanamo, BC, Canada Web: http://iss7.viu.ca/
Vilavicencio, Colombia Email: mario@mareevent.com
9th-11th October DanAqua Aalborg Congress & Culture Centre,
9th-12th August Aquaculture Europe 2013, Trondheim, Norway Email: mario@marevent.com
Aalborg, Denmark Web: www.danfish.com / www.danaqua.net
13th-16th August aquaNor, Trondheim, Norway Web: www.nor-fishing.no
November
2013
September
2013
4th-6th September Genomics in Aquaculture Symposium (GIA 2013)
3rd-7th November The Aquaculture Elsevier Conference, Las Palmas, Gran Canaria Email: H.Stewart@elsevier.com
7th-9th November Expo Pesca & Acuiperu, Lima, Peru Web:www.thaiscorp.com/expopesca_new/site/index
Bodo, Norway Web: http://gia2013.org
20th-22nd November XII International Symposium on Aquaculture Nutrition,
9th-13th September 11th Conference of the Aquaculture Association of Southern Africa Aquaculture Conference 2013
Tabasco, Mexico Web: http://www.ujat.mx/interioradentro.aspx?
Stellenbosch, South Africa Web: www.aasa-aqua.co.za/site/conference
December
2013
Aquaculture Scoop Issue 2 Page 17
10th-13th December Asian Pacific Aquaculture 2013, Ho Chi Minh City, Vietnam Web: www.was.org
ASIAN PACIFIC AQUACULTURE 2013 The international aquaculture conference and exhibition organized by the Asia Pacific Chapter of the World Aquaculture Society.
DECEMBER 10 -13, 2013 SAIGON EXHIBITION CONVENTION CENTRE HO CHI MINH CITY, VIETNAM Hosted by Ministry of Agriculture and Rural Development (MARD)
Gold sponsor
For More Information Contact: Conference Manager Email: worldaqua@aol.com
Silver sponsor
Featuring: 5th International Oyster Symposium
www.was.org WAS premier sponsor
WAS premier sponsor
re l tu y i ne cu or nl u a ec t t o y Aq Dir wes tor ne irec t he d
A new online directory for the aquaculture industry covering all aspects from nutrition to equipment to universities and research centers. Aquaculture Directory aims to become the number one information portal for the industry, providing news, product releases, new appointments and information on upcoming events as well as full company contact details. All our information is checked and verified before being published, as we pride ourselves on accuracy.
A hard copy of the directory will be available at the end of the year, to reserve your free copy visit www.aquaculturedirectory.co.uk or email us at info@aquaculturedirectory.co.uk