百葉簾開放冷藏櫃雛型測試

Investigation on a prototype of an open refrigerated display cabinet with louver curtains

10.29911/JEHVACE_NEW.202205_(133).0005

謝佳興(Chia-Hsing Hsieh)；蔡明倫(Min-Lun Chai)；李永明(Yung-Ming Li)

冷藏開放展示櫃 ； 百葉簾 ； 熱捲入係數 ； Open refrigerated display cabinets ； Louver curtains ； Thermal entrainment factor

冷凍空調&能源科技

133期（2022 / 05 / 10）

61 - 66

繁體中文

超商超市中的開放冷藏櫃存在冷氣外洩導致溫度與耗電表現差的問題，直接加裝門雖然簡單有效，但不符合國內消費者使用習慣，需要一種不影響購物便利性的解決方法。本研究提出一外掛於開放冷藏櫃之百葉簾構造，平時透明葉片關閉，降低冷氣外洩；當消費者靠近時開啟葉片，不影響購物便利性。首先透過模擬軟體模擬不同葉片尺寸與數量，並使用熱捲入係數（Thermal Entrainment Factor, TEF）作為評估指標。選定具備最佳熱捲入係數之百葉簾尺寸製作實驗用雛形，並於環控實驗室參考CNS測試標準進行實驗。相較於一般開放冷藏櫃，實驗結果顯示百葉簾構造可將最高溫試驗包之中心溫度由20.1℃降低至11.6℃，同時平均耗電功率也由991W降低至703W，約節省29%之耗電量。

Open refrigerated display cabinets in convenience stores or supermarkets have the problem of poor temperature and power consumption caused by the leakage of cold air. Although the installation of doors is simple and effective, it does not meet domestic consumer's needs. A solution that does not affect the convenience of shopping is needed. This study proposed a louver curtain structure that is attached to an open refrigerated display cabinets. When there is no consumer, the transparent blades are closed to reduce the leakage of cold air; when consumers approach, the blades are opened which does not affect the convenience of shopping. Different blade sizes and numbers are simulated, and the Thermal Entrainment Factor (TEF) is used as the performance indicator. The louver curtain size with the best TEF was selected to make the prototype for the experiment, and the experiment was carried out in the environmental control laboratory with reference to the CNS test standard. Compared with open refrigerated display cabinets, the louver curtain structure can reduce the core temperature of the warmest temperature test package from 20.1℃ to 11.6℃, and the average power consumption is also reduced from 991W to 703W, saving about 29% of power consumption.

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