本文選題：空氣源熱泵 + 相變��； 參考：《太原理工大學(xué)》2013年碩士論文

【摘要】：熱泵是最重要的節(jié)能技術(shù)之一,空氣源熱泵具有高效節(jié)能、使用方便和綠色環(huán)保的特點,在我國空氣源熱泵供熱替代燃煤鍋爐供熱具有廣闊的推廣應(yīng)用前景。然而傳統(tǒng)的空氣源熱泵長期在低溫環(huán)境下運行時會出現(xiàn)一系列問題,基于此本文開發(fā)設(shè)計了一種相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)。相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)與傳統(tǒng)熱泵相比增加了相變蓄熱器裝置,實現(xiàn)了熱泵技術(shù)和相變蓄熱技術(shù)的結(jié)合。在不同的環(huán)境工況下,本熱泵系統(tǒng)可進行供熱—蓄熱模式、供熱—放熱模式和除霜—放熱模式切換運行。在環(huán)境溫度高于-5℃時,系統(tǒng)在供熱—蓄熱模式下運行,解決了傳統(tǒng)空氣源熱泵供熱過程中存在能量供需矛盾；環(huán)境溫度低于-5℃時,系統(tǒng)在供熱—放熱模式下運行,增強了空氣源熱泵低溫運行的安全性和經(jīng)濟性；當環(huán)境溫度較低、蒸發(fā)器結(jié)霜時,系統(tǒng)在除霜—放熱模式下運行,實現(xiàn)了相變蓄熱快速高效節(jié)能除霜。為了研究相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)的性能特性,本文設(shè)計組裝了一臺相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)實驗樣機,并建設(shè)了模擬室外環(huán)境的移動冷庫,對熱泵系統(tǒng)在不同環(huán)境溫度和不同模式下的運行特性進行了實驗測試。測試結(jié)果顯示：相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)在三種模式下運行時都具有優(yōu)良的性能,在超低環(huán)境溫度-25℃和-30℃下運行時,制熱性能系數(shù)COP分別為2.0和1.94,制熱量也基本能滿足供熱需求,同時壓縮機排汽溫度顯著降低。實驗研究結(jié)果表明,本相變蓄熱蒸發(fā)型空氣源熱泵系統(tǒng)能夠解決空氣源熱泵在供熱過程中存在的能量供需矛盾,同時提高了空氣源熱泵在低溫運行下的各種性能,它完全可以推廣應(yīng)用到環(huán)境溫度較低的廣大北方地區(qū)。
[Abstract]:Heat pump is one of the most important energy-saving technologies. Air source heat pump has the characteristics of efficient energy saving, convenient use and green environmental protection. It has a broad prospect of popularization and application in replacing coal-fired boiler heating with air-source heat pump heating in China. However, a series of problems will arise when the traditional air source heat pump is operated in low temperature for a long time. Based on this, a phase change heat storage evaporative air source heat pump system is developed and designed. Compared with the traditional heat pump, the phase-change heat storage evaporative air source heat pump system increases the phase change accumulator device, and realizes the combination of the heat pump technology and the phase change heat storage technology. Under different environmental conditions, the heat pump system can be operated in the heat supply-storage mode, the heat supply-release mode and the defrosting-heat-release mode. When the ambient temperature is higher than -5 鈩，

本文編號：1803855