Experimental Comparison of Scroll and Swash-Plate Compressors for PV Driven Compression Chillers and Heat Pumps

摘要

A scroll and a swash-plate compressor are compared with each other, regarding their capability to operate in aPV-driven vapor cycle. Compressors for PV driven applications need a wide operation range and a dynamiccontrol behavior. The comparison is performed in three steps: Firstly, the performance in steady-state operation,secondly, the controllability in dynamic operation and, thirdly, the operation under realistic boundary conditions.It is shown that the swash-plate compressor has a wider operation range with low part-load capability down to18.9%. Regarding the controllability, the swash-plate compressor shows severe oscillations after a suddendecrease of the power signal. Finally, both compressor types are operated in a hardware in the loop simulationconsidering the generated PV power as well as electric and thermal demand of a single-family house in Munichto evaluate their applicability in PV driven applications.