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| Experiments on Adsorption Performance and Simulation on Freezing System for CaCl2-BaCl2-NH3 Two-Stage Adsorption |
| WANG Jian, HU Yuan-Yang, WANG Li-Wei, WANG Ru-Zhu |
| (Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University，Shanghai 200240， China) |
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Abstract In order to achieve freezing condition under -15 °C while the heating source temperature is lower than 100 °C and the condensing temperature is higher than 30 °C, a CaCl2-BaCl2-NH3 adsorption refrigeration system was designed with two-stage desorption cycle. A series of experiments were performed on two-stage adsorption test unit in order to get the adsorption and desorption data of the composite absorbents, which are the mixture of salt chloride and expanded graphite. By fitting the data into adsorption and desorption curve, we set a mathematic model of the system by combining the adsorption and desorption equations and heat transfer equations of the system. The performance of the system was simulated and the results show that the system is able to use 85 °C heating source for the output of -15 °C freezing temperature, when the condensing temperature is 30 °C. The cooling capacity of the system simulated is 2.62 kW.
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Received: 08 November 2010
Published: 30 September 2011
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