1. Zero Energy Homes Speaker: Baha Alawi

2. What is a Zero Energy Home? An energy efficient home that uses renewable energy from the sun to produce as much electricity as it consumes

3. Objective The objective of this presentation is to highlight the sophisticated powering and heating technology integrated in a net zero energy home

4. Electric Configuration Connected to a local utility grid and takes electricity from there Sometimes makes sufficient energy to send back to the utility grid Electric meter rolls backward once there is more energy available than required Annual net zero energy consumption

5. Collectors Convert sunlight to heat 1. Seasonal collectors circulate water through plastic pipes with little protection from freezing 2. Flat plate collectors circulate anti-freeze fluid through insulated pipes and release heat with a heat exchanger 3. Evacuated tube collectors are very insulated glass cylinders that increase absorption of heat and decrease heat loss

6. Hot Water Collectors capture solar energy for heating water: Drinking and washing Radiant floor heating Indoor or outdoor swimming pool

7. Solar Electricity/Solar Panels Installed in the exterior Converts sunlight to electricity Efficiency increases during winter and decreases during summer Can be arranged in a series and parallel connected units

8. Roof of Zero Energy Home

9. Ground Source Heat Pumps Uses the earth’s ground water for heating in the winter and for heat removal from the house in the summer In winter, a liquid absorbs heat from the earth and is raised by a heat pump into the indoor air In summer, heat is removed from indoor air then transferred into the earth through a liquid

10. Technologies Collectors Solar Electricity (Solar Panels) Ground Source Heat Pumps The above technologies incorporated in a ZEH makes it highly energy efficient!

11. Reference Gordon Shields, Rob McMonagle, Bill Eggertson, Metering-Rick Ronchka. Net Zero Technologies. July 29,2005 7:33 AM. September 23,2005..http://www.associations.cc/nzeh/index.htm NAHB Research Center. The Zero Energy Home Concept. Copyright 2001-2005. September 27,2005..