Adsorption refrigeration is an environmental benign and energy saving refrigeration technology and has a great potential for the utilization of low-grade energy

such as solar energy and industrial waste heat below 100℃.For efficient utilization of these low-temperature heat sources

a two-stage adsorption refrigeration cycle was proposed based on the adsorption refrigeration process and resorption process. Refrigeration performance of the working pair of SrCl2-NH4Cl-NH3 was tested at different evaporating and condensing temperatures.The results show that the two-stage adsorption refrigeration cycle can give the cooling output with the temperature of -25℃ when the temperature of the heat source is 70℃.The adsorption quantity of strontium chloride is 94% of the theoretical value.Under the condition of 80℃ heat source

25℃ cooling source

and -25℃ refrigerating temperature

the COP and SCP are 0.250 and 160 W·kg-1

respectively.At the same cooling and refrigerating temperatures

compared with the working pair of CaCl2-BaCl2-NH3 with the heat source temperature of 85℃

the heat source temperature in this study decreases 5℃

and COP and SCP increase by 4% and 10%

respectively..