Development and Testing of a Diesel-Powered Compression Heat Pump for Domestic Central Heating Systems

摘要

A diesel-powered air-to-water heat pump with engine-speed control for domestic central heating systems has been developed and tested. A monovalent operation and high flow-temperature of approx. 70 exp 0 C have been realized. Piston-type compressors and a screw-type compressor have been examined. Based on the experimental results, a computer program was compiled to simulate the operation of the heat pump during an entire heating period. By modifying the combustion process of the diesel engine, the soot and NO/sub x/-emissions were reduced up to 50% and the HC-emissions up to 15% of the corresponding initial values. Some prototypes have been installed in domestic central heating systems for long-time tests. 104 figures. (ERA citation 10:020911)