作者: Ival O. Salyer
DOI:
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摘要: The present invention is directed to a water heater which includes phase change material having freezing/melting temperature from about 30° C. 90° include source of water, heating element for the heat exchange unit contains material, and plurality tubes positioned in unit, are transfer relation so that stored can be transferred water. preferably heated top down accommodate changes volume during thermocycling.