Heat for agriculture

VärmeKabelTeknik

Heating products for agriculture

from

Heating products for agriculture 2

Heating cables in agriculture

VärmeKabelTeknik

Heating cables can be used in a number of different applications to improve the function and to rationalize the breeding within agriculture.

Example of range of application The most common application is frost protection of water conduits and other pipes such as fodder conduits, sewers and air discharge pipes at the mouth of which ice may form.

Dung passages and dung yards are more frequently coated to simplify transport and handling of dung. The dung proved to run smoothly in wintertime too, where dung passages had been fitted with heating cables, thus prolonging the service life of the machinery for the dung‐conveying passages. The outer edge of the dung yard is covered with a heating cable which is moulded in to prevent ice forming round the dung heap. Hereby the outflow from the dung yard as well as unloading the yard by tractor is simplified.

Silos are covered with heating cables (approx.

150W/m²) to avoid ice forming inside the silo.

Floor heating in rooms for personnel, entrances as well as in stables. Surface heating at the entrance reduces accidents due to slips. Floor heating gives dry, comfortable floors in both the entrance and the changing‐room. Floor heating in stalls gives the animals a dry and comfortable floor to lie on.

Outdoor milking stations are often cold places with a slippery floor. This can easily be arranged with heating cables installed in the concrete floor and the walls of the cavity. This gives a comfortable working environment and reduces the risk of working accidents.

Machinery hall/workshop with floor heating, there will be a dry floor with a comfortable temperature for repairs and maintenance of machines. Floor heating with heating cables casted in the floor furthermore gives a depot of heat which means a quick reheating of the hall after the machines have been driven in and out during wintertime.

Potato stock rooms many times damp in the ceiling will cause problems with drops of water falling down on the potatoes and as a result of this mould. This can be avoided by hanging up heating cables on the ceiling.

Potato stock rooms built on the ground often need a very low heat supply but the floor at the edge beam can get quite cold and here the potatoes may get frost‐ bitten even if an aerotemperer always heats the remaining space. Heating cables cast in the floor along the edge beam can effectively eliminate this freezing.

VärmeKabelTeknik

Frost protection of dung-conveying passages

Heating products for agriculture 3

Frost protection means the compensation of the heat loss by means of insulation material.

Free hanging dung passages are exposed to cold from the underside which in many cases brings the dungs to freeze in the passage. Due to this, friction will build up when conveying dung next and, in turn, this means damage to the mechanism.

This can be prevented by supplying heat to the three sides of the passage, using heating cable 20W/m and a c/c‐distance of 100‐150mm. The heating cable is fixed by means of galvanized mounting strips, covered with foil and insulated with 10‐20mm "pore‐tight" insulation of type "cellular plastic".

The heating cable thermostat is controlled by the thermostat sensor, mounted beneath the passage between two cable runs.

Dung yards of concrete are often subjected to frost along the outer edges of the dung heap, this, in turn, will result in a deteriorated outflow of urine from the dung heap and in problems when unloading the yard by using a tractor.

The problem can be solved by casting in heating cables along the outer edge of the yard with approx. 1m width and a pair of extra cable runs from the centre of the yard in direction to the urine‐drain.

Frost protection of fodder silos

There can be reason to frost protect fodder silos in order to avoid freezing as a result of damp inside the silo.

The damp can result in an increased amount of mould in the fodder, problems to take out fodder from the silo and in the pressure disk which compresses the fodder from above wedging in the inner side of the silo.

The problem can be solved by installing heating cable, 20W/m, c/c‐distance 30mm, on the outside of the silo.

The heating cables are fixed with mounting strips and connected through a thermostat with a sensor fitted to the silo between two cable runs.

Heating cables in outdoor milking stations in the free-range system

Heat in the outdoor milking station gives a good working environment with a dry bottom in the cavity and eliminated possible draught as the cold air is prevented from falling down in the cavity.

Heating cable is installed in the floor and on the sides of the outdoor milking station. The heating cable is fixed to the vertical reinforcing irons on the sides, thus minimi‐ zing any influence of the casting. The heating cables are connected to thermostat and earth‐leakage‐circuit breaker.

Heating products for agriculture 4

Floor heating Heated floors in industrial premises have a number of good qualities. Since the heating source is concealed, it is not exposed to environmental influence, it will not collect dust or take up room and does not influence the possibility of furnishing a changing‐room or the possibility to divide for instance a piggery/cow‐house into boxes. Consideration should be taken though, to possible attachments which shall be made in the concrete floor as drilling in the floor can damage the heating cable. However, this is no problem if you plan well. In machinery halls where some work is done lying on the floor it is of great advantage if the floor is heated.

Floor heating does also mean that the floors dry up quickly, for example in entrances and shower surfaces and that the risk of accidents due to wet floors will be minimal.

VärmeKabelTeknik

Heating cables in stables/cowsheds means a dry, comfortable floor for the animals to lie on. This is especially of advantage in boxes with new‐born animals.

Easy to install Begin the installation from the junction box and reel out the cable according to the planned installation pattern.

Reel out all of the cable before it is fixed to its position.

The cable shall be installed on the effective floor surface, not under permanent closets or similar spaces where the upper side of the floor cannot emit heat to the room. In many cases it is of advantage if the heating cable is laid with a shorter distance between the loops near the outer walls. This neutralizes effectively possible cold downdraughts from windows.

The heating cable loops are control with a thermostat which sensor is placed in a protection pipe between two cable runs.

When laying a new floor the heating cable is fitted directly on top of the reinforcement. The cables are fixed to the upper edge of the reinforcement by electrical tape or plastic coated lashing wire. When casting on existing floors, the heating cable is fixed to special mounting strips mounted on the existing floor.

The distance between the mounting strips should be approx. 1m. The mounting strips are mounted across the planned cable installation. Floor heating cables may also be placed in levelling compound, thus raising the floor level very little (15‐25mm).

VärmeKabelTeknik

Potato store

Heating products for agriculture 5

By using heating cables in potato cellars/stores you will improve your possibilities of delivering fresh potatoes from the crop from autumn to next summer. In these storage‐rooms moisture in the ceiling may many times leads up to problems with waterdrops falling down on the potatoes and resulting in mould. This can be avoided with heating cables hanging under the ceiling.

Greenhouses

If heating cables are applied to greenhouses or hotbeds, the season of cultivation can be extended.

Heating cables installed under the forcing‐beds heat up to root system of the plants evenly which leads to a good growth also when planting early. This also means that the season of cultivation and crop is extended by a couple of months, depending on geographical location and supply of light.

Heating cable (7‐10W/m) is installed in a bed of sand under the forcing‐bed at a depth of approx. 20‐40cm with a c/c‐distance of 20‐30cm. the heating cable is covered with sand and protected against damages from digging by a reinforcement netting for instance.

The application is connection by way of an earth‐ leakage‐circuit breaker and a thermostat the sensor of which is placed in the lower part of the forcing‐bed in a pipe protected from corrosion.

Heating cables on earth beds for plants The table is built of solid, waterproof wood with a bed of sand on the bottom on which the heating cable is laid. After that the sensor of the thermostat is fitted between two cable runs. A function test of the heating cable is carried out and then the cable is covered with a layer of sand approx. 3‐5cm deep. The application is connected by way of an earth‐leakage‐circuit breaker.

Heating products for agriculture 6

Heating fabrics

VärmeKabelTeknik

Field of applications:

•

Thawing of frozen soil to a depth of approx 1m before digging.

•

Thawing of local areas of frozen ground (for example in front of doorways)

•

Thawing of ensilages

•

Thawing of ice‐formations at ventilation discharge on roofs.

•

Frost protection of containers and tanks.

•

Thawing of molasses

Summary: By using an electric heating fabric you supply heat where it is needed.

An electrical heating fabric is thin and thus easy to shape.

The electric heating fabric is controlled by a thermostat, which prevents overheating and guarantees a long service life.

HEATING FABRIC Type

1100

Supply voltage 230 Volt.

Size (mm)

Heated surface

Power

Length

Widht

Length

Width

Tot.W

W/m²

3.3

1.25

3.2

1.0

1100

344

The electric heating fabric can be delivered in other sizes on request.

The heating fabric can also be obtained for use in explosive areas.

VärmeKabelTeknik

Frost protection for water supply and sewer systems

Heating products for agriculture 7 VELOX PREFROST STANDARD KITS

There are many examples of trouble due to frozen water supply and sewer systems. In addition to the inconvenience caused by out‐of‐order water and discharge pipes, there may be material damages as well that is very expensive and difficult to repair.

An easy method to guard against such problems is to provide frost protection by installing heating cables inside or outside the pipes.

For pipes up to 50mm a good rule of thumb is that an output of 10W/m is enough if the pipe lies in the ground or is otherwise covered. (A thin insulation is sufficient).

Symbol

Length

Velox Prefrost

(m)

Total

Power (W) W/m

Part.no

32/06

6

60

10.0

8986171

32/10

10

100

10.0

8986172

32/20

20

200

10.0

8986173

32/25

25

245

9.8

8986174

32/30

30

300

10.0

8986175

32/35

35

345

9.9

8986176

32/40

40

420

10.5

8986177

32/50

50

510

10.2

8986178

Other lengths on request.

NOTE! A heating cable with an output greater than 12W/m must not be laid directly against a plastic pipe as this may cause heat damages to the pipe.

Velox Prefrost - the flexible tube with built-in heat Using Velox Prefrost is the easy and quick way to get frost protected water pipes for a reasonable inclusive price.

In summer as in winter, Velox Prefrost guarantees problem‐free running water. It is a practical solution for stables, fodder places and other facilities of a non‐ stationary type where water is to be installed. Prefrost is an excellent way to replace an old frozen pipe; just install your tube and let it be on the ground until spring comes. Then dig and place the tube some decimetres in the ground for permanent mechanical protection.

Velox Prefrost is delivered as a ready unit, consisting of an insulated plastic tube (32 mm), tee‐conduit and heating cables, ready mounted for connection to water and supply mains.

Velox Prefrost manages temperatures down to ‐25oC without further insulation on the ground. If the tube is installed in the ground, it will manage all climatic conditions without further measures.

Since the heating cable is fitted inside the tube, Prefrost has a very high efficiency and consequently very low energy consumption.

Velox Prefrost has been tested and approved by SP (Swedish National Testing and Research Institute).

Velox Prefrost is available in standard lengths according to the table; other lengths on request.

Heating products for agriculture 8

Standard lengths for internal frost protection

VärmeKabelTeknik

Standard lengths for internal frost protection are kept in stock in two designs: with self‐limiting BTL lengths 1‐ 20m and series resisitive return wire cable TCPR 20‐ 100m.

Heating cable loops with TCPR are designed for approx.

10W/m at 230 Volt and the BTL‐loops have a varying output depending on the ambient temperature; 13W (0°C) ‐ 2W (+40°C).

All cables are delivered complete with cold‐lead‐in cable, R20 bushings and caution label. The BTL‐loops with plug (10A).

CABLE DATA Length

Power

Type

(m)

(tot)

(W/m)

TCPR

BTL

Part.no

1

10

10

X

140113I

2

20

10

X

1402025I

3

30

10

X

1403037I

4

40

10

X

1404050I

5

50

10

X

1405065I

6

60

10

X

1406075I

7

70

10

X

1407090I

8

80

10

X

1408110I

9

90

10

X

1409125I

10

100

10

X

1410135I

12

120

10

X

1412165I

14

140

10

X

1414190I

16

160

10

X

1416215I

18

180

10

X

1418245I

20

200

10

X

1420270I

20

200

10.0

X

8987124

25

245

9.7

X

8987125

30

300

10.0

X

8987126

35

345

9.9

X

8987127

40

420

10.4

X

8987128

45

370

8.3

X

8987129

50

510

10.2

X

8987130

55

465

8.5

X

8987131

60

620

10.4

X

8987132

65

575

8.8

X

8987133

70

690

10.4

X

8987134

80

930

11.6

X

8987135

85

875

10.3

X

8987136

90

930

9.2

X

8987137

100

1075

10.0

X

8987138

VärmeKabelTeknik

Frost protection for water conduit

Heating products for agriculture 9

Heating cable loops for external application on water conduits with supply voltage 230V. Thermostat with sensor placed on the pipe and earth‐ leakage‐circuit breaker is recommended.

Heating cable in stables It is also possible to get series resistive heating cable loops designed for protective extra‐low voltage (6‐48V) to use inside stables that are not heated.

Length

Power

Type

(m)

(tot)

(W/m)

TCPR

BTL

Part.no

1

10

10

X

1401013

2

20

10

X

1402025

3

30

10

X

1403037

4

40

10

X

1404050

5

50

10

X

1405065

6

60

10

X

1406075

7

70

10

X

1407090

8

80

10

X

1408110

9

90

100

X

1409125

10

100

10

X

1410135

12

120

10

X

1412165

14

140

10

X

1414190

16

160

10

X

1416215

18

180

10

X

1418245

20

200

10

X

1420270

SERIES RESISTIVE 6

60

10.0

X

8987150

12

110

9.1

X

8987152

20

220

11.0

X

8987154

25

265

10.6

X

8987156

30

330

11.0

X

8987158

35

375

10.8

X

8987160

40

455

11.5

X

8987162

45

405

7.0

X

8987163

50

556

11.0

X

8987164

55

506

9.0

X

8987165

60

675

11.0

X

8987166

65

625

7.5

X

8987168

70

755

11.0

X

8987170

80

805

10.0

X

8987172

85

950

11.0

X

8987174

90

904

10.0

X

8987175

100

1175

11.5

X

8987176

Heating products for agriculture 10

Frost protection using self-limiting cable type BTL-10

VärmeKabelTeknik

BTL‐10 is a heating cable with self‐limiting properties.

This cable is especially made for frost protection purposes, and can be used in external as well as in internal installations. With rising temperatures the output of the cable will decrease.

BTL‐10 provides approximately 12W/m at 0°C, about 10W/m at +10°C and if the temperatures increases to +65°C the output of the cable will be nearly zero.

BTL‐10 is sold prepacked in so‐called "frost boxes", containing 30, 50 or 100m cable together with an adequate number of termination kits and caution labels.

BTL‐10 can be cut to required lengths and the end termination is done on the site.

BTL‐10 is thus very suitable for keeping in stock, in order to take care of any sudden need for heating cables.

NAME

CONTENTS

Frostbox

Cable

Termination kits

Caution labels

Part.no

BTL‐30

30 m

5 st

6 st

8986133

BTL‐50

50 m

10 st

10 st

8986135

BTL‐100

100 m

15 st

15 st

8986137

Control of frost protection installations For easy and in most cases adequate control, use our OTTOSTAT (85 800 53).

The Ottostat is a thermostat permanently set to switch on at a temperature of +5°C, mounted in a junction box so that it senses the ambient air temperature. The junction box is equipped with the requisite number of connecting blocks and an indicator light.

If it should be more suitable to control the heating cable by a sensor, a cheap capillary thermostat, F2000, or a more expensive electronic one mounted on the pipe, can be used, which makes it possible to place the sensor at a distance up to 100m from the thermostat box. In both cases the sensor can be fitted to the pipe by using tape.

Name

Temp. (°C)

Ottostat (fast)+5

Voltage (V)

Load W/A

Part.no

230

1300/6

8580053

VärmeKabelTeknik

Heating products for agriculture 11

Notes

.................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... .................................................................................................................................................................................................... ....................................................................................................................................................................................................

Heating products for agriculture 12

VärmeKabelTeknik

Telephone: +46‐301‐418 40 – Email: info@vkts.se – Homepage: www.vkts.se

Industrihuset

Södra Hedensbyn 43

S‐430 64 HÄLLINGSJÖ

S‐931 91 SKELLEFTEÅ

Sweden

Sweden

Fax: +46‐301‐418 70

Fax: +46‐910‐881 33