09.ferwerda

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1:The Efficient Office Building 2: Energy Management


We all complain, but do little about our energy consumption (wasted energy) • Every night you can drive around the Island and see how electricity is wasted

Office building at 8:30 pm


Showroom at 3am


Lights left on at a school


Old appliances and AC’s

• 18 Year old HVAC central air system with EER rating of 2.3 • Ducting system was 18 years old, very dirty and full of holes thus leaking everywhere


Examples of office energy usage in Curacao • • • • • • • •

Bank 1 Dr. Office 1 Trust office Bank 2 Insurance company (new building) Dr. Office 2 Small office LEED Building

20.01 kW/m2 18.75 kw/m2 17.69 kw/m2 15.42 kw/m2 12.23 kw/m2 8.88 kw/m2 8.71 kw/m2 4.14 kw/m2

As you can see, there is a lot of variation in energy usage


What do we consider to be an efficient office? • Every region is different • There are varying standards, and no legal requirements yet • Currently our Carensol standard is 7 kW/m2 consumption for an office building

This does not include installing alternative energy generation!


Examples of office energy usage in Curacao • • • • • • • •

Bank 1 Dr. Office 1 Trust office Bank 2 Insurance company (new building) Dr. Office 2 Small office LEED Building

20.01 kW/m2 18.75 kw/m2 17.69 kw/m2 15.42 kw/m2 12.23 kw/m2 8.88 kw/m2 8.71 kw/m2 4.14 kw/m2


Where do you start when you want to lower your energy bills?


The energy pyramid


Start by hiring an energy consultant • Schedule a complete energy audit and think of it as an investment instead of a cost • It’s easier to make decisions when you know what the ROI is going to be • For new construction have your energy expert work with your architect all through the design process. Hire an architect who is committed to energy efficiency , and not just the design


What does an energy consultant do? • • • • • • • •

Building structure The AC system and appliances Lighting Air quality The roof Usage patterns Energy management system Education of workers


Building structure • Insulation • R-value vs centimeters • Windows exposed to sunlight should get reflective film • In new buildings, don’t put large windows in sun exposed walls • Double pane windows? • Don’t forget Air Quality


The AC system and appliances • Even though your AC or appliances might still be relatively new, it can still be cheaper to replace them • EER<10 • Individual AC controls • Old PC’s, fridges, TV’s


Lighting. Watts vs Quality of light! • LED’s. Long life, 35-50.000hrs. 50-70 Lumens/watt. Expensive • Modern fluorescent bulbs. Long life, 40.000hrs. Up to 100 lumens/watt. Cheap • The SUN is the ultimate light source. “Daylighting” using tubular skylights. High quality. Minimal heat radiation. Longest life.


Solatube


Poor light quality is bad for productivity


Outside Lights


Roof integrity • No sense installing solar panels on a bad roof. • The roof should be able to carry the extra weight of the panels • Long-life roof surface guarantee


Usage patterns • Up to 45% of all energy consumption in office buildings occurs when the office is closed! • Bad habits. Leaving equipment and lights on. AC thermostat too low.


Energy management system • Not enough buildings have one • A lot of times not functioning properly • Most are limited to turning lights on/off


Educating employees • An often overlooked aspect of energy saving in offices. • Poor knowledge stimulates waste • An energy efficient and environmentally friendly office stimulates productivity


Additional value of an energy consultant • Knowledge of market, products and pricing After receiving the reports, he can guide you to the best products at the best prices.


Why invest in energy savings first and then consider solar? • Solar energy systems have an ROI of 4-5 yrs (depending on who does the calculation) after tax write-offs etc. • Reducing energy consumption up to standard has an ROI of around 1-3 yrs after tax write-offs depending on the extend of measures necessary.

It is still cheaper to save energy than to produce new energy! Potential% saving vs Potential% generation


Energy usage profiles 2 • What is the effect on real energy usage after installation of an alternative energy source like a solar panel system? • Off-grid vs grid-tie: is there a difference?


Off-grid • Proven that energy use is reduced because of consciousness and production limits. Once the batteries are dry, no more juice! • Better planning of energy usage • More efficient appliances are a necessity, not an option. • A little less comfort, a lot more satisfaction!


Grid-tie • Danger of presumption that electricity is free • Energy never runs out • Risk of shocking energy bills remain • Insight into real usage is necessary


In order to reduce our dependency on fossil fuels . . . we should not only focus on green production, but also on reduction of energy usage.


Building Efficiency & Energy Systems • March 2012


Plugwise today •

Cut back (unnecessary) energy use

Building Automation

Lighting Control

Home

Plugwise tomorrow •

Balance energy supply and demand inside and between buildings and utilities to make optimal use of the existing real estate and grid

Smart Grid Enabler

Peak shaving and load shedding


The company • Start development February 2007 • State-of-the-art production in The Netherlands • Flexible organization through maximal automation and outsourcing of production and logistics • Steadily growing organization; currently 30 employees in The Netherlands, 2 in Germany, and approximately 10 externals for engineering


Plugwise users


The basic wireless system

Circle

Stick

Source Pro 2.20


Products • Worldwide product portfolio • Measuring and switching


Switch Wireless switching of appliances and lighting

Sense

Scan

Wireless measuring of Wireless measuring and temperature and humidity switching of light and presence based on movement


S Send IR


Internet connectivity Robust Zigbee - Internet bridge-gateway. Keeps the Plugwise system fully functional even without an Internet connection! •ARM 400Mhz; •32Mb Flash; •512Mb RAM; •Zigbee EM357; •TCP/IP; •USB 2.0; •RJ45 P1;

Stretch Lite 2.0


Newest measuring products

Central Indirect submeter that communicates with Source Pro software (200 A / phase , 240 – 400 V~, 3 phase)

Sublime I & III Direct submeter that sends data to the software via the P1 port (85 A , 230-400 V~, 1-3 phase)

Signal DLMS-connection between main or submeter and the Plugwise system


ZigBee® • ZigBee is a reliable, robust, energy efficient and self-healing RF-technology to monitor and manage; • Open international communication protocol for lighting and energy meters; • ZigBee offers exceptionally high security (128 bit AES); • Over-the-air (OTA) upgrades and sensor preferences; • Domestic appliances industry chooses Zigbee; • Lighting industry has chosen Zigbee; • Switching materials and meter suppliers have chosen Zigbee.


Full dynamic ZigBee速 mesh


Full dynamic ZigBee速 mesh

During a broadcast the most efficient route to the desired address is automatically chosen. A confirmation is always sent.


Full dynamic ZigBee速 mesh

When an obstruction occurs the system chooses another route and if possible repairs the network automatically.


Switchpanel for lighting


Floorplan


Multi facilities


Climate monitoring Application in supermarket


Energy monitoring Application in supermarket


Universal, platform independent app


Smart Wash: more beautiful, more extensive


Smart thermostat


The smart heat exchanger • Realtime insight in the big advantages of heat exchange; • Intuitive control via tablet or smartphone; • Less ventilating volume and losses through valve control; • Decentral heat exchange turns efficient.


Demand-driven heat exchanger


Conclusion • Insights: – Real insight in and control over energy – Real insight in climate – Real insight in occupancy buildings and rooms • Efficiency improvements decrease housing costs with at least 20 % and raise the building energy achievement label. • Wireless simplicity: – Plug & Play (battery) powered Zigbee Pro sensors – Effortless installations result in a low labor factor – Fast installation with little disruption in the workplace • Wireless flexibility: – Easily adaptable in case of renovation or relocation – Over-The-Air updates and setting preferences


SOURCE WEB 2.0


Simply on and off


Clear graphs of the smart meter as well as individual appliances


Easy zooming in and out


Standby killer


Clear insight per room


Modify settings


Need for a Budget Coach?  Aqualectra (dis)connected 10.000 households in 2011  Several thousands of households are in debt relief programs  This number will increase in 2012


The E+G Budget Coach 

These households can use a smart meter

These smart meters are then connected to a Smile P1 ( € 70,-)

A few plugs

Together with a Narvic android tablet ( € 85,-)

And the Plugwise E+G budget coach.

NB: internet is not necessary


De E+G Budget Coach U zit € 14,boven uw budget.

€ 8,-

€ 10,-

€ 12,-

€ 10,-

€ 2,-

€ 11,-

€ 53,-

Mei

vandaag


Food for thought?


Plugwise tomorrow •

Cut back (unnecessary) energy use

Building Automation

•

Lighting Control

Home

Balance energy supply and demand inside and between buildings and utility to make optimal use of the existing real estate and grid

Smart Grid Enabler

Peak shaving and load shedding


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