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 â&#x20AC;˘ Up to 45% of all energy consumption in office buildings occurs when the office is closed! â&#x20AC;˘ 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 â&#x20AC;˘ 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? â&#x20AC;˘ Solar energy systems have an ROI of 4-5 yrs (depending on who does the calculation) after tax write-offs etc. â&#x20AC;˘ 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 â&#x20AC;˘ What is the effect on real energy usage after installation of an alternative energy source like a solar panel system? â&#x20AC;˘ 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 â&#x20AC;˘ March 2012
Plugwise today â&#x20AC;˘
Cut back (unnecessary) energy use
Building Automation
Lighting Control
Home
Plugwise tomorrow â&#x20AC;˘
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 â&#x20AC;&#x201C; 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 â&#x20AC;˘
Cut back (unnecessary) energy use
Building Automation
â&#x20AC;˘
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