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Space heating and hot water supply usually have great energy consumption in terms of household, industry, and other services which could be a big issue especially for the cold region. From technical and economic aspect, the present work investigates a hybrid sorption heat transformer (HSHT), which also plays a role of energy storage and upgrade. A renewable source or off-grid electricity is used for electricity supply while solar heat or ambient heat is regarded as heat inputs for two different scenarios. Composite ammonium chloride is used for further analysis of HSHT. Results indicate that HSHT could be a good candidate for the domestic heating in the cold region. Compared with vapor compression heat pump (VCHP), payback period (PBP) of HSHT could be reduced by up to 40%. Under different scenarios, PBPs are in the range from 2.48 year to 4.1 year. Also the levelized costs of heating of HSHT ranges from 20 $·MWh −1  to 46 $·MWh −1  for scenario 1 while the values of 64–133 $·MWh −1  could be obtained for scenario 2 which is up to 35.6% lower than that of VCHP. Carbon emission of HSHT system only accounts for 18% and 11% of that of gas boiler and VCHP, respectively.

Analysis on hybrid compression-assisted sorption heat transformer for potential domestic heating