Study on Energy Saving of Appling Cascade System on Walk-in Refrigeration Show Cabinet

• Main Authors: Jenn Chyi Chung, 鐘震麒
• Other Authors: Yang-Cheng Shih
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/51912954238237127949

碩士 === 國立臺北科技大學 === 冷凍與低溫科技研究所 === 91 === Refrigerated display cabinets are widely used in 24-hr convenience store in Taiwan. In this research, we built a 5 in 1 closed type walk-in refrigerated display cabinet and its compression refrigeration system, which including traditional single stage compression system and cascade refrigeration system, to evaluate their system performance. The results of the performance test showed that the cascade refrigeration system adopting R134a and R507 combination has better system performance than the combination of R134a and R404A, and the power consumption test also showed 5 ~ 7% energy saving improved comparing with the single stage compression refrigeration system adopting R404A under the testing condition of 40℃ condensing temperature.