儲冰系統應用於冷凍與冷藏展示櫃之性能分析

Performance analysis of Thermal Energy Storage System Applied on Refrigerated and Freezing Display Cabinet

10.29911/JEHVACE_NEW.202109_(129).0001

趙允晟(Yun-Cheng Chao)；謝佳興(Chia-Hsing Hsieh)；蔡明倫(Min-Lun Chai)；楊愷祥(Kai-Shing Yang)

儲冰系統 ； 冷凝溫度 ； COP ； ice storage system ； condensing temperature ； COP

冷凍空調&能源科技

129期（2021 / 09 / 10）

20 - 30

繁體中文

台灣夏季尖峰電力供應吃緊，以及離峰／尖峰用電負荷不均衡之問題，透過儲冰系統將製冷設備在尖峰時段的用電轉移至離峰時段，藉以平衡離峰與尖峰用電，進而削減尖峰用電。本研究規劃儲冰系統應用於冷藏與冷凍展示櫃兩種不同溫度段之負載，探討並分析其系統特性。利用水的相變化，以冰的狀態儲存冷能於儲冰槽裡，於尖峰用電時段使用儲冰槽儲存之冷能降低冷凝溫度，藉以提升系統效率，從而達到減低耗電量。結果得出使用儲冰系統可有效將冷凍系統之Coefficient of Performance（COP）提升36.4%，冷藏系統之COP提升72.5%，並可有效降低融冰時的系統耗電量，驗證複合式儲冰系統可有效削減尖峰用電並轉移至離峰時段。

The unbalanced power load during off-peak and peak hours and the tight power supply during peak summer hours in Taiwan are the vital issues of power supply system. Transfer the electricity consumption of refrigeration system during peak hours to off-peak hours by the ice storage system, so as to balance off-peak and peak power consumption, thereby reducing peak power consumption. This research develops a commercial refrigerator and freeze showcases with ice storage system. This experiment was used to analyze the characteristics of ice storage system in two different freezing capacity parameters will be discussed in this study. Water was converted into ice and cold energy was stored in the ice storage tank in the off-peak power period. To improve system efficiency, the stored cold energy could be used to reduce the condensing temperature of the refrigeration system. Freezing system can effectively increase the Coefficient of Performance (COP)36.4% and Refrigeration system can effectively increase the COP 72.5% during the peak hours. Proving that the composite ice storage system can reduce peak power consumption and shift it to off-peak hours.

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