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Geographic constraints on passive solar domestic hot water systems due to pipe freezing

✍ Scribed by Jim Salasovich; Jay Burch; Greg Barker

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 235 KB
Volume: 73
Category: Article
ISSN: 0038-092X
DOI: 10.1016/s0038-092x(03)00004-5

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✦ Synopsis

The supply and return piping of passive solar domestic hot water systems (SDHWS) is typically exposed to ambient weather conditions, and damaging pipe freeze is a major concern. This paper presents a pipe-freeze model that accounts for hot water draws and uses 30 years of actual weather data. The simulation results are cast in terms of pipe-freeze probabilities. Using contour maps of the continental United States, the pipe-freeze probabilities for residential, commercial, and seasonal passive SDHWS are presented for various pipe and insulation geometries.

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