- 學位論文
蒸發冷卻應用於氣冷式可變冷媒系統的性能研究
Evaporative Cooling Applied to the Performance of the Air Cooled Variable Refrigerant Volume System
摘要
在氣冷式空調加裝水霧裝置對於節能有最直接的效果。本文探討氣冷式 可變冷媒流量系統應用蒸發冷卻與空氣冷卻的整體性能研究分析。在實驗的 條件下，比較蒸發冷卻及空氣冷卻等不同方式的冷卻方式，分析出耗電量、 系統運行效果及COP，以確認系統運行效果及輸出性能的表現。本論文研究 之結果多聯可變冷媒量系統，應用水霧進行蒸發冷卻，可有效降低壓縮機吐出 溫度，延長壓縮機運行壽命，且蒸發冷卻可使多聯可變冷媒量系統目標蒸發溫度 與實際蒸發溫度更為吻合，確保整體運行所需的冷凍能力，使系統運行更為穩 定。在整體的功耗表現，蒸發冷卻方式可使系統壓縮機耗電量減少10.78％，整 體耗電量減少9.02％，整體COP 增加6.09％。因此在多聯可變冷媒系統應用蒸 發冷卻，可以提昇運轉效率以及降低功耗，減少能源浪費，延長壓縮機壽命及降 低使用成本。
並列摘要
Retrofitting of a mist device in the air-cooled air conditioning system has the most direct effect on energy conservation. This study investigated the overall performance of applying the air-cooled variable refrigerant flow system in evaporative cooling and air cooling. Under the experimental conditions, this study compared the evaporative cooling, the air cooling and other cooling methods. It also analyzed the power consumption, system operational effect and COP to confirm the system operational effect and output performance. The results showed that the application of water mist for evaporative cooling in the multi-joint variable refrigerant system can effectively reduce the compressor discharge temperature, and extend compressor life. Moreover, the evaporative cooling can make the target evaporation temperature more consistent with the actual evaporation temperature of the multi-joint variable refrigerant system to ensure the cooling capacity needed for the overall operation and thus make the system operation more stable. In terms of the overall power consumption performance, the evaporative cooling can reduce the system compressor power consumption by 10.78% and overall power consumption by 9.02%, and increase the overall COP by 6.09%. Hence, the application of evaporative cooling in the multi-joint variable refrigerant system can improve operational efficiency, reduce energy consumption, extend compressor service life and reduce the cost of use.