太陽能輔助高溫熱泵系統的研發

Research and Development on a Solar-Assisted High Temperature Heat Pump system

蘇文強(Wen-Chiang Su)

指導教授 ： 卓清松

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00119

摘要

本研究目的為藉由提高熱泵的儲水溫度，以達到儲熱量提升、減少夜間運轉時間與縮小儲水桶體積的成效。實驗中利用太陽能集熱板吸取輻射熱源，並供給HFC-245fa冷凍系統之蒸發裝置其所需的能量，使系統能運轉在高於100℃的冷凝溫度，進而儲存較高溫的熱水；並探討蒸發溫度在40℃、50℃、60℃時，對應冷凝溫度在70℃、80、90℃、100℃其系統的運轉效益及實際應用的可行性。實驗結果顯示，HFC-245fa熱泵系統於蒸發溫度為40℃、50℃、60℃且熱水出水溫度為100℃時，其COPH分別為1.96、2.35、2.5；在亞熱帶氣候中，採用太陽能輔助之熱泵系統可改善HFC-245fa冷媒在高溫製熱時，壓比過大、效率較差的缺點，且在外氣條件較低時，能提高熱泵之運轉效率，進而節能省能源消耗。本研究使用HFC-245fa之太陽能輔助熱泵系統，確實能提供高溫用水及減少熱泵系統儲熱體積過大的問題。

關鍵字

太陽能集熱板 ； 太陽能輔助熱泵 ； HFC-245fa ； 高溫熱泵

並列摘要

Through increasing the stored water temperature of heat pump, the study attempts to achieve the effects of increasing heat storage, decreasing night operation time and reducing water storage tank volume. In the experiment of the study, solar thermal collector is used to absorb radiant heat and supply the energy required by the evaporation device of HFC-245fa refrigeration system, making the system operate at a condensing temperature over 100℃, and further storing hot water of higher temperature. The paper also explores the operation effects of the system and feasibility of its actual application at the corresponding condensing temperatures 70℃, 80℃, 90℃, 100℃ when evaporation temperatures are 40℃, 50℃, 60℃. Experimental results show that the COPHs of HFC-245fa heat pump system are 1.96, 2.35, 2.5 respectively when evaporation temperatures are 40℃, 50℃, 60℃, and hot water outlet temperature is 100℃. In sub-tropical climate, solar assisted heat pump system can improve the defects of excessively great pressure ratio and poor efficiency when HFC-245fa refrigerant produces heat at high temperature, and enhance operating efficiency of heat pump when outside air conditions are lower, and further save energy consumption. The solar assisted heat pump system of HFC-245fa used by the study can really supply high-temperature water and improve the problem of excessively great volume in heat pump system.

並列關鍵字

solar heat collector ； solar-assisted high temperature heat pump system ； HFC-245fa ； high temperature heat pump

參考文獻

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