Question-and-Answer Resource for the Building Energy Modeling Community
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Besides, @Jamie Bull posted several questions (1, 2 and 3 ) about PCM thermal storage tank a long time ago. The answer for the last post may also help you i.e. "Another options is to use a normal tank with equivalent storage capacity and operate it within a narrow temperature range." Practically, PCM thermal storage tanks affect the tank size, plant room size, intallation cost, etc., but in terms of energy simulation, the total tank capacity matters and the details of phase change in PCM would not affect the end use that much. If you agree with that, you can simply use a solar collector with a thermal storage tank which is not filled with PCM but has the same storage capacity as your PCM tank, and some good ExampleFiles are in your laptop such as HPAirToAir_wSolarCollectorHWCoil.idf.
