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Washington Examiner xa Tag i Tag e Tag Tag Despite sharing the namezero energy building, there are several definitions of what ZEB means in practice, with a particular difference in usage between North America and Europe.[3]
Other unique energy-saving strategies include usingabsorption chillers, daylighting,combined heat and power,[3], andPassive cooling.
ZEBs generate their own energy to meet their electricity and heating needs. In the case of individual houses, variousmicrogenerationtechnologies may be used to provide heat and electricity to the building, usingsolar cellsorwind turbinesfor electricity, andbiofuelsorsolar collectorslinked toseasonal thermal storesfor space heating. To cope with fluctuations in demand, zero energy buildings are frequently connected to theelectricity grid, export electricity to the grid when there is a surplus, and drawing electricity when not enough electricity is being produced. Other buildings may be fullyautonomous.
Zero Energy Production, incommercialandindustrialapplications. Taking into account the diversetopographyof each location and designing arenewable energy developmentapproach to satisfy the production energy required to develop each product. This production energy always reduces the profitability of each facility constructed in the past. With Zero Energy Production comes the arena of placingGeothermal,Microhydro,Solar, andWindresources to lower the initial impact of each facilities requirement to be self sustainable using onlysustainable energy.
Zero-energy neighborhoods, such as theBedZEDdevelopment in theUnited Kingdom, and those that are spreading rapidly in California and China, may usedistributed generationschemes. This may in some cases includedistrict heating, community chilled water, shared wind turbines, etc. There are current plans to use ZEB technologies to build entire off-the-grid cities, such as the photovoltaic-poweredHuangbaiyuSustainable Village, and the plannedDongtanEco-City nearShanghai.
A benefit of such localized energy generation is the elimination ofelectrical transmissionandelectricity distributionlosses. These losses amount to about 7.2%-7.4% of the energy transferred.[6]
One of the key areas of debate in zero energy building design is over the balance betweenenergy conservationand the distributed point-of-use generation ofrenewable energy(solar energy,wind energy, etc.). Most zero energy homes use a combination of the two strategies.[7]
One example of the new generation of zero energy office buildings is the 71-storyPearl River Tower,which is scheduled to open in 2009, as the Guangdong Company headquarters. It uses both high energy efficiency, and distributed renewable energy generation from both solar and wind. Built by Skidmore Owings Merrill LLP in Guangzhou, China[15], the tower is receiving economic support from government subsidies that are now funding many significant conventional fossil-fuel (andnuclear energy)energy reductionefforts.
plex,'s headquarters inMountain View, California, completed a 1.6 megawatt photovoltaic campus-wide renewable power generation system. (and others) have developed advanced technology for major reductions in computer-server energy consumption (which is becoming a major portion of modern zero-energy commercial building design, along with daylighting and efficient electrical lighting systems).Wide acceptance of zero energy building technology may require more government incentives or building code regulations, the development of recognised standards, or significant increases in the cost of conventional energy.
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