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Summer Air-Conditioning Systems/Saving Natural Resources
Published in Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo, Energy Conservation Guidebook, 2020
Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo
Steam-jet cooling is based on an operational principle that deals with the relationship of pressure and the boiling point of a liquid. A reduction in pressure, to which a liquid is subjected, causes its boiling point to be lowered. As water boils, it evaporates very rapidly. Evaporation causes the temperature of a liquid to be reduced. When liquid of a certain temperature is sprayed into a closed low-pressure vessel, it enters the vessel at a temperature higher than its boiling point will be at the reduced pressure. This action causes immediate evaporation of the liquid.
Energy Saving in an Air-Conditioning System Using Interdisciplinary Energy Conversion Approach
Published in Smart Science, 2023
S Suyambazhahan, Tatek Temesgen, Anita A. Nene, S Ramachandran
Eames et al. [4] investigated steam jet cooling both theoretically and practically. A tiny steam jet refrigerator was tested with a boiler temperature range of 120–140°C. Maximum COP was obtained when the ejector was at a critical flow state. The steam jet cooler is studied theoretically and experimentally at temperatures ranging from 120°C to 140°C and evaporator temperatures ranging from 5°C to 10°C. The results consistently demonstrated the impact of various parameters on the overall operation. Selvaraju and Mani [5] created a computer program based on the existing one-dimensional ejector theory to analyze the ejector’s performance. Aside from the ejector’s intrinsic irreversibility, the computer code incorporates friction effects on the constant-area minting chamber and fluctuations in the specific heat of the working fluid. The simulated performance was compared to experimental data from the literature. The operational parameters were explored for their effects on the critical ejector area and the critical training ratio. R134a, R152a, R290, R600a, and R717 ejector performance with ecologically friendly coolants were compared.