Abstract
Solid adsorption system, one of alternative refrigeration systems, is utilized to provide cold for refrigerator or air-conditioner and can be operated by assistance of solar heat. System performance study through computer usage to develop simulation program and simulate behaviors of system operation can give designed system which suits for user’s need. Also, the present study aims to develop dynamic simulation program of solid adsorption refrigeration system operated by solar assistance to simulate behaviors of system operation and its performance. Flat plate collectror is utilized to provide thermal energy for system’s adsorber and activated carbon/methanol is used to be a suitable working pair. Simulation procedure starts with various solar radiation intensities as input energy on solar collector and water is used as collector working fluid. Behavior of system operation can be considered to be 4 steps as isosteric heating, isobaric desorption, isosteric cooling and isobaric adsorption, respectively. This research studies the effect of varying solar radiation intensity on temperature, pressure of adsorber, adsorption ratio at each steps of system operated ranging from 6:00 am (the first day) to 6:00 am (the next day) and system performance which is defined as coefficient of performance, COP. In addition, the simulation result shows monthly average COP of 0.43 compared to a result of another previous research work under the same operating condition and the percentage error is 7.5%.
Highlights
Energy provision for refrigeration system and air-conditioner plays a major role in world cooling market
Activated carbon (AC)/CH3OH is commonly used as working pair because of its cheap cost and availability
Dynamic simulation program has been developed to study the effect of various parameters on COP and utilized to simulate behavior of system operation, which makes understanding in operating system and obtains suitable results for design system having efficient system performance
Summary
Energy provision for refrigeration system and air-conditioner plays a major role in world cooling market. (2014) Dynamic Simulation of Solid Adsorption Solar Refrigerator System with AC/CH3OH as a Working Pair. Almost air conditioners has been used as type of vapor compression system which provides several disadvantages of consuming huge amount primary energy and CFC refrigerant caused for ozone depletion. From comparative performance study of thermal refrigeration technologies, absorption type yields the highest system performance ranging from 0.7 - 0.8 while system has high complex and can generate crystallization problem of salt solution or working pair at high generator temperature and concentration. Dynamic simulation program has been developed to study the effect of various parameters on COP and utilized to simulate behavior of system operation, which makes understanding in operating system and obtains suitable results for design system having efficient system performance
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