|材料类型：||会议刊物, 文献, 政府刊物, 国家级的政府刊物, 互联网资源|
J Burch; National Renewable Energy Laboratory (U.S.)
|注意：||Title from title screen (viewed Aug. 28, 2012).
"Presented at the 2012 World Renewable Energy Forum, Denver, Colorado, May 13-17, 2012."
|描述：||1 online resource (8 pages) : color illustrations.|
|详述：||Full text available via Internet in .pdf format. Adobe Acrobat Reader required.|
|丛书名：||Conference paper (National Renewable Energy Laboratory (U.S.)), 5500-54540.|
|责任：||J. Burch [and others].|
In the United States, annual performance ratings for solar water heaters are computed with component-based simulation models driven by typical meteorological year weather and specified water draw. Changes in the process are being implemented to enhance credibility through increased transparency and accuracy. Changes to the process include using a graphical rather than text-based model-building tool, performing analytical tests on all components and systems, checking energy balances on every component, loop, and system at every time step, comparing the results to detect outliers and potential errors, and documenting the modeling process in detail. Examples of changes in ratings are shown, along with analytical and comparative testing results.