Materials science

Absorption (acoustics)

Thermodynamics

Physics

Environmental science

Composite material

Chemistry

Refrigeration

Absorption refrigerator

Energy Conversion and Management

In recent years, research has been devoted to improvement of the performance of ammonia-water absorption refrigeration systems. In this study, thermodynamic analyses for ammonia-water, ammonia-lithium nitrate and ammonia-sodium thiocyanate cycles are performed. Detailed thermodynamic properties of these binary fluids are expressed in polynomial equations. The performances of these three cycles are compared. It is found that ammonia-lithium nitrate and ammonia-sodium thiocyanate cycles are suitable alternatives to ammonia-water absorption systems. The performance of the ammonia-sodium thiocyanate cycle is slightly better than that of the ammonia-lithium nitrate cycle.

Comparison of the performances of NH3-H2O, NH3-LiNO3 and NH3-NaSCN absorption refrigeration systems