Retrofit of split air-conditioner with R-290

• Main Authors: PU-NINE-LI, 浦念理
• Other Authors: lee jing nan
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/80749097839598911401

碩士 === 國立勤益科技大學 === 冷凍空調系 === 102 === This study proposes an experimental platform for retrofiting the existing R-22 system with the R-290 due to the physical properties and safety concern. The operating properties of system. while the use of simulation applications CoolPack R-22 and R-290 single-stage refrigeration cycle system through simulation results that R-290 R-22 have more than excellent compression ratio and coefficient of performance, safety refrigerant after analysis, the analysis result that the refrigerant R-290 in a hazardous environment and the refrigerant filling amount experiment no spontaneous combustion of the explosive, so selected as for R-290 Dress cold refrigerant, then, the amount of measuring instruments calibrated compare and choose a smaller error rate measurement instruments, then selected the same conditions with the air conditioner simulation parameters, and then measuring instruments installed air conditioners and record data, so getThe operating properties of system, which involves condensing and evaporation pressure, supplied air temperature, power consuming and performance coefficient, are introduced to balance the effect of refrigerant change. The analysis shows that in the system with rated 680(g), 50%~55% R-290 refrigerant filling has same performance as R-22 amount is 680(g).