22 May 2002

B4-19 A new heat pump system for year-round water heating and seasonal space cooling


Using Heat pump to heat water is an energy efficient way for water heating, and especially for the occasions where both water heating and space cooling are needed, heat pump is the most energy efficient way to do so. So far, only a few heat pumps are designed for water heating and space cooling, while most of them are for the occasions for both heating and cooling simultaneously, and even in these systems there is still some space for improving. In addition, for lots of the dwellings, hot water is required year-roundly and air cooling is needed only in summer. A new heat pump system is needed for these innumerable households. This paper presents a new and high energy efficient heat pump system for these applications (year-round water heating and air cooling, and year-round water heating and seasonal air cooling)