DEVELOPMENT OF FAST CALCULATION METHOD FOR AMMONIA REFRIGERATION CYCLE AND PARAMETER ADJUSTMENT WITH GENETIC ALGORITHM

摘要：

A parameter adjustment method for an ammonia heat pump chiller using a genetic algorithm (GA) was developed. The parameters were automatically adjusted by the data of performance at rated point. Upon using the proposed adjustment method for parameters, output values of the simulation model agreed quite well with the performance data at rated point. The deviation of output was less than 1.2 ％ from the rated value. To speed up the adjustment process, a new approximation method with neural network was also proposed. This method decreases the calculation time required in obtaining refrigerant thermodynamic properties. The time required to calculate saturated and other refrigerant states were decreased by 14 times and 33 times respectively, while the average relative error was less than 0.04 ％ and 0.5 ％ when compared to the exact solution from REFPROP. The time required to calculate the refrigerant cycle decreased 20 times, while relative error was within 3 ％.

关键词： Ammonia heat pump Parameter adjustment REFPROP Approximation Refrigeration cycle

作者: Eisuke Togashi Shin-ichi Tanabe Tomohiro Ataku

作者单位: Waseda University, Dept.of Architecture, 3-4-1 Okubo Shinjuku-ku, Tokyo 169-8555

会议类型: 国际会议

会议名称: 第10届建筑模拟国际会议

会议地点: 北京

会议语种:英文

在线出版日期: 2007-09-03（万方平台首次上网日期，不代表论文的发表时间）