本文選題：空氣源熱泵　切入點：太陽能　出處：《華中科技大學》2015年碩士論文

【摘要】：太陽能熱水器與空氣源熱泵作為可替代燃氣和電熱水器的清潔能源設備在社會上被推廣使用。然而,太陽能熱水器受天氣的影響很大,使用過程中穩(wěn)定性不佳。而空氣源熱泵在環(huán)境溫度較低時運行效率低,并且存在結(jié)霜問題。本文將太陽能和空氣源熱泵結(jié)合,并引入了工業(yè)生產(chǎn)中的余熱,利用三者之間的配合,取長補短,實現(xiàn)資源的合理分配使用。本文完成了結(jié)合余熱和太陽能的空氣源熱泵系統(tǒng)的設計,將工業(yè)上多余的熱量用于提高低溫環(huán)境下熱泵的運行效率,并且利用太陽能這種清潔能源配合補充空氣源熱泵供熱。完善了該系統(tǒng)的運行策略,合理地設計了一套節(jié)能的運行切換方式,并且對系統(tǒng)進行了理論計算,得出其在-10℃的環(huán)境溫度下,制熱COP為4.87,相比簡單的空氣源熱泵,制熱COP提高了63.8%。此外,針對該系統(tǒng),本文設計了一種新型的除霜換熱器。在現(xiàn)有的翅片管式換熱器的基礎上,增加一個熱水進口和一個出口,使空氣在與工質(zhì)換熱之前,被熱水管加熱到一個合適的溫度,這樣就提升了工質(zhì)的蒸發(fā)溫度,在環(huán)境溫度較低時(-10℃),能在一定程度上提高壓縮機的吸氣溫度,壓縮機能更高效地運行。對新型換熱器做了換熱的模擬,分析了其溫度場、速度場和壓力場,研究了入口溫度、入口速度和翅片間距對換熱性能的影響,并與傳統(tǒng)的換熱器進行比較,得出新型換熱器的換熱效果相對于傳統(tǒng)換熱器有很大的提升。對系統(tǒng)進行了實驗研制,在志高空調(diào)公司的焓差實驗室搭建了該系統(tǒng)的實驗臺架,并布置了數(shù)據(jù)采集裝置,由于時間關(guān)系,后期將運行系統(tǒng),進行實驗研究。
[Abstract]:Solar water heaters and air-source heat pumps are widely used as clean energy devices to replace gas and electric water heaters. However, solar water heaters are greatly affected by the weather. The operation efficiency of air-source heat pump is low when the ambient temperature is low, and the problem of frosting exists. This paper combines solar energy with air-source heat pump and introduces the waste heat in industrial production. The air source heat pump system based on residual heat and solar energy is designed in this paper. The excess heat in industry is used to improve the operating efficiency of heat pump in low temperature environment, and the clean energy of solar energy is used to supply heat supply with air source heat pump. A set of operation switching mode of energy saving is designed reasonably, and the system is calculated theoretically. It is concluded that the heating COP is 4.87 at -10 鈩，

本文編號：1684359