Design and Cost Study of Heat Exchangers for Air-Cycle Shelter Cooling Systems

摘要

Calculations were made to show how the heat transfer and the pressure loss of the heat exchanger and piping would affect the pertinent air-cycle parameters. Appropriate values for heat exchanger characteristics, efficiencies of compressors and expanders, pressure ratios, and air temperature at the expander inlet were used to determine the power, equipment, and heat-sink requirements for an air-cycle system in a shelter. Then, for each of the major components of the system. Cost estimates were made assuming that the compressorexpander costs per cfm would be independent of the pressure ratio and the flow rate.