Wet Compression-Resorption Heat Pump Cycles: Thermodynamic Analysis and Design

摘要

This thesis is devoted to the thermodynamic analysis and design of wet211u001ecompression-resorption heat pump cycles. Compression-resorption heat pumps are 211u001ecompression systems that work with a non-azeotropic mixture. The evaporation in 211u001ethe desorber is incomplete, so that either dry compression (solution 211u001erecirculation) or wet compression is possible. The claimed advantage of these 211u001ecycles is higher efficiency than conventional pure refrigerant cycles, because of 211u001ethe better temperature glide matching between the heat source and sink and the 211u001erefrigerant mixture. The use of a mixture also allows the achievement of higher 211u001etemperatures at lower pressures and the control of the capacity by controlling 211u001ethe mixture concentration. The first part of this thesis deals with the 211u001ethermodynamic analysis of compression-resorption cycles and with wet compression. 211u001eFor pure refrigerants, wet and dry compression systems are considered 211u001etheoretically. For mixed refrigerants, theoretical consideration is given to 211u001esolution recirculation systems and both theortetical and experimental studies are 211u001emade for systems using wet compression.