Thermally activated systems based on sorption cycles, as well as mechanical systems based on vapor compression/expansion are assessed in this study for waste heat recovery applications. In particular, ammonia-water sorption cycles for cooling and mechanical work recovery, a heat transformer...

The coming energy transition in residential neighbourhoods is the result of the increasing cost of CO2 emission and the decreasing costs of solar PhotoVoltaics (PV) and alternative techniques of residential heating, namely Combined Heat and Power (CHP) and heat pump. The optimal transition is...

A long-term reliability test of an integral-type solar-assisted heat pump water heater (ISAHP) was carried out. The prototype has been running continuously for more than 13,000 h with total running time 20,000 h during the past 5 yr. The measured energy consumption is 0.019 kWh/l of hot water at...