| abstract |
An absorption cycle (110) according to the present invention has a warming potential of less than 1,000, and operates using a refrigerant that contains at least one of an HFO refrigerant, an HFC refrigerant and an HCFO refrigerant, and an absorbent liquid that contains at least one of the compounds represented by formula (1), formula (2) or formula (3). (1): R1-(OCH2CH2)n-OR2 (2): R1-(OCH2CH(CH3))n-OR2 (3): R1COO-(OCH2CH2)n-OR2 In the formulae, each of R1 and R2 independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; and n represents an integer of 1 to 6. |