Refrigerants in the vapor state can absorb the most heat efficiently in cooling systems.
The vapor state of refrigerant is capable of absorbing the most amount of heat among the options provided. In vapor compression and vapor absorption systems, refrigerants in the vapor state absorb heat during the evaporation process, making them efficient at heat absorption.
Vapor compression systems re-liquefy the refrigerant by compressing it and cooling the liquid refrigerant by heat transfer to the environment. Vapor absorption systems, on the other hand, re-liquefy the refrigerant by dissolving it in a solvent, heating the mixture, and cooling the refrigerant by heat transfer to the environment.
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