本研究旨在探討水性紅外線塗料( IWC )對於家用冰箱運轉性能的影響。利用傅立葉紅外線光譜儀( FTIR )檢測紅外線材料的光譜特性並選擇最適合紅外線共振的材料。首先選出二氧化鋯( ZrO2 )、多壁奈米碳管( MWCNTs )以及電氣石( tourmaline )作為添加材料。接著以二階合成法製成不同濃度的IWC，並以FTIR檢測決定最佳的添加濃度為5.0 wt.%。最後將5.0 wt.%的IWC噴塗於壓克力板，並放置於冰箱的層板之上進行IWC對於冰箱性能影響的研究。冰箱性能測試則包含無載下拉實驗與24加載循環實驗的每月耗電量( Wm )、能源因數( EF )、下拉斜率( SPD )、冷凍冷藏庫溫度以及溫度的均勻性。
研究結果顯示冰箱塗佈tourmaline-IWC具有最佳的Wm與EF，其Wm與EF分別比未塗佈IWC減少0.28 ~ 4.19%與提升0.67 ~4.33%。冰箱塗佈IWC在冷凍與冷藏庫的有載庫溫下拉斜率均低於未塗佈IWC。塗佈MWCNTs-IWC的冷凍庫負載下拉斜率高於未塗佈IWC冰箱0.18 ~ 0.55%，然而塗佈IWC的冰箱的冷藏庫負載下拉斜率則均低於未塗佈IWC。冷凍庫溫度均勻性以塗佈ZrO2-IWC最佳，冷藏庫則是以塗佈MWCNTs-IWC最佳。

This study investigated the effect of infrared water-based coating (IWC) for the domestic refrigerator performance. The fourier transform infrared spectroscopy (FTIR) was adopted to detect infrared (IR) spectral characteristics of materials and to select the most suitable materials for infrared resonance. Firstly, the zirconium dioxide (ZrO2), multi-walled carbon nanotubes (MWCNTs), and tourmaline were selected for added materials. Then, the IWC with various materials and concentrations was prepared by using two-step synthesis method, and FTIR detection to determine the optimal concentration was 5.0 wt.%. Finally, the 5.0 wt.%-IWC was sprayed on the acrylic plate, and placed on the refrigerator shelves to investigate the effect of IWC for refrigerator performance. The refrigerator performance test involved no-load pull-down test and 24 hr on-load cycling test for monthly energy consumption (Wm), energy factor (EF), slope of pull-down (SPD), freezer/cold storage temperature, and the temperature uniformity.
The results showed that the refrigerator with tourmaline-IWC had the optimal Wm and EF for all test parameters, the Wm and EF with decreasing 0.28 to 4.19% and increasing 0.67 to 4.33% compared with the refrigerator without IWC, respectively. The slope of pull-down of freezer/cold storage temperature for the refrigerator with IWC was lower than the refrigerator without IWC. The slope of pull-down of load in freezer for the refrigerator with MWCNTs-IWC was 0.18 to 0.55% higher than that of the refrigerator without IWC, however, the slope of pull-down of load in cold storage for the refrigerator with IWC was lower than that the refrigerator without IWC. The optimal uniformity of freezer temperature and cold storage temperature was refrigerator with ZrO2-IWC and MWCNTs-IWC, respectively.

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