Search

The operation of a novel solar-energized long term storage system has been studied using computer simulation. The system uses a phase change material (PCM) consisting CaC12, 6H20 for short-term heat storage; crushed-rocks sensible heat storage bin with enclosed hot water tank and heat pump system for medium-term heat storage, and soil for long-term heat storage. Calculations indicate that this system will provide a higher heat gain than a single bin system studied earlier. The single bin system was studied analytically and theoretically, comparing the use of a PCM and crushed-rocks, and included a heat pump operating from the same bin. Due to analysis and design method of experiment, the effect of six variance factors on system performance for higher PCM efficiency was studied.