Experimental evaluation on thermal performance of an air-cooled absorption refrigeration cycle with NH3-LiNO3 and NH3-NaSCN refrigerant solutions

This paper experimentally analyzes thermal performance of an air-cooled type single effect absorption refrigeration cycle with ammonia-lithium nitrate and ammonia-sodium thiocyanate solutions as working pairs. The experimental apparatus operated steadily under different working conditions. A set of tests were conducted and the corresponding experimental data including temperatures and pressures of the refrigerant and solution as well as the mass flow rate of the refrigerant was measured and recorded to show the variation of the system performances with different system working parameters. The experimental results of the present study demonstrate the feasibility and capability of ammonia/salt absorption refrigeration cycle for freezing purpose under air cooling conditions.161