Paper No 297 – Annual performance assessment of heat pump water heaters applying various refrigerants – 13th IEA Heat Pump Conference, Jeju, Korea
In order to help prevent global warming, greenhouse gas emissions must be reduced. Equivalent CO2 emissions can be reduced by using heat pump water heaters instead of conventional gas boilers or electricresistance water heaters. We focused on the differences in annual performance of heat pump water heaters using different refrigerants, including those that contained CO2 and R32. When assessing different refrigerants, the effect of different climates in relation to the specific application area was taken into consideration. To this end, water supply and ambient temperatures were varied according to the particular climatic conditions to calculate annual performance. As a result, the effect of different refrigerants and climates on the annual performance of heat pump water heaters was revealed