熱源塔熱泵空調系統(tǒng)在長沙地區(qū)的適用性分析
本文選題:熱源塔熱泵 切入點:能耗模擬 出處:《湖南大學》2015年碩士論文
【摘要】:我國大中型空調系統(tǒng)采用的主要冷熱源技術方案包括冷水機組供冷+輔助供熱(鍋爐供熱、熱電站供熱)、熱泵機組供冷供熱(空氣源熱泵、地源熱泵、水源熱泵)以及天然冷熱源供冷供熱。熱源塔熱泵屬于空氣源熱泵的一種,采用寬帶換熱及噴淋溶液化霜等技術解決常用空氣源熱泵冬季工況運行室外換熱器易結霜的缺點,在我國南方冬季低溫高濕地區(qū)具有廣闊的發(fā)展前景和節(jié)能優(yōu)勢。本課題首先簡單介紹熱源塔熱泵的結構及工作原理,并根據(jù)熱源塔熱泵空調系統(tǒng)的特點,選取長沙市某建筑建立計算模型,以熱源塔熱泵空調系統(tǒng)、VRV空調系統(tǒng)和冷水機組+燃氣鍋爐空調系統(tǒng)對比來進行分析和研究。其次,利用建筑能耗模擬軟件eQUEST對建筑模型分別采用熱源塔熱泵空調系統(tǒng)、VRV空調系統(tǒng)和冷水機組+燃氣鍋爐空調系統(tǒng)的能耗進行精確模擬分析,模擬計算各空調系統(tǒng)全年運行能耗。最后,根據(jù)模擬結果從一次能源消耗量、能耗系數(shù)和運行費用三個方面分析熱源塔熱泵空調系統(tǒng)在長沙地區(qū)的適用性;從初投資、年費用、壽命周期成本及熱經濟學成本四個工程經濟指標方面分析出熱源塔熱泵空調系統(tǒng)在長沙地區(qū)運行的經濟性,并通過熱源塔熱泵在冬季工況運行測試試驗,測算其冬季工況運行性能。對比分析研究結果表明,熱源塔熱泵在長沙地區(qū)冬季工況供熱運行穩(wěn)定,化霜效果良好,熱泵主機冬季制熱性能系數(shù)COP達4.218;相比其他兩種常用空調系統(tǒng),初投資及運行費用低,全年綜合能耗系數(shù)為0.38935,全年綜合運行熱經濟成本為0.5647元/kW?h。
[Abstract]:The main technical schemes of cooling and heat sources used in large and medium air conditioning systems in China include chiller cooling auxiliary heating (boiler heating, heat power station heating, heat pump unit cooling and heating) (air source heat pump, ground source heat pump,Water source heat pump) and natural cooling and heating sources.Heat source tower heat pump is a kind of air source heat pump. The technology of wide band heat transfer and spray solution defrosting is used to solve the problem that outdoor heat exchanger is easy to frost in winter operation of common air source heat pump.It has broad development prospect and energy-saving advantage in the winter low temperature and high humidity area of southern China.Firstly, the structure and working principle of heat source tower heat pump are introduced briefly. According to the characteristics of heat source tower heat pump air conditioning system, a calculation model of a building in Changsha is selected.The comparison of VRV air conditioning system of heat source tower heat pump air conditioning system and gas boiler air conditioning system of chillers is analyzed and studied.Secondly, using the building energy consumption simulation software eQUEST, the energy consumption of the air conditioning system using heat source tower heat pump air conditioning system and the gas boiler air-conditioning system of the chillers are accurately simulated and analyzed.The energy consumption of each air conditioning system is simulated and calculated throughout the year.Finally, according to the simulation results, the applicability of heat source tower heat pump air conditioning system in Changsha area is analyzed from three aspects: primary energy consumption, energy consumption coefficient and operation cost.The economy of heat source tower heat pump air conditioning system in Changsha is analyzed in terms of life cycle cost and thermoeconomics cost, and the heat source tower heat pump is tested in winter.Its winter operating performance is measured.The results of comparative analysis show that the heat source tower heat pump has stable heating operation and good defrosting effect under the winter working conditions in Changsha, and the coefficient of heat heating performance of the heat pump mainframe in winter is 4.218. Compared with the other two kinds of commonly used air conditioning systems, the initial investment and operating cost are lower.The annual comprehensive energy consumption coefficient is 0.38935, and the annual thermal economic cost of comprehensive operation is 0.5647 yuan / kW / h.
【學位授予單位】:湖南大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TU831
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