Research on a New Type of Solar-driven Air-cooled NH3H2O Absorption Refrigeration Cycle

A new type of solar-driven air-cooled NH3H2O absorption refrigeration cycle was proposed.It have rectification equipment for purifying ammonia steam and recovers heat from rectifier and absorber.By these realizing small size,air-cooled and the effective use of solar energy.So the coefficient of performance(COP) is increased compared with traditional models.Based on energy conservation,solution mass conservation and ammonia components mass conservation,the thermodynamic mathematic model of each component is established.Then cycle performance is calculated by writing programs.The effect of main operation parameters(heat source temperature,evaporating temperature,condensing temperature)on the coefficient of performance(COP)was studied,laying the foundation for optimization design and operation of refrigeration system.