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- W181837116 abstract "The pioneering work of Roger French in using a refrigerant in a passive solar domestic hot water heating system is reviewed. The use of Freon 114 allows an isothermal (..delta..T = 0) passive system to make use of the phase change to extract heat at a much lower collector temperature. A 30% improvement in performance is reported allowing the use of fewer collectors or inclining collectors 10/sup 0/ steeper than the latitude, improving performance during the winter months. The installation parameters (including a diagram) for the passive, refrigerant-charged system is given as well as the physical (temperature-pressure) relationships of various refrigerants (Freon R-12, R-22, and R-114). The possible effects of escaping fluorocarbons on the ozone layer in the atmosphere are considered briefly. Advantages and disadvantages for this type of passive, phase change, refrigerant-charged system are discussed. It is concluded that this type of domestic hot water system is considerably more cost effective and reliable than other options and the payback period is shorter. (MJJ)" @default.
- W181837116 created "2016-06-24" @default.
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- W181837116 date "1981-12-01" @default.
- W181837116 modified "2023-09-28" @default.
- W181837116 title "What you should know about phase-change water heaters" @default.
- W181837116 hasPublicationYear "1981" @default.
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