热源塔热泵空调系统在长沙地区的适用性分析

发布时间：2018-04-01 20:04

本文选题：热源塔热泵　切入点：能耗模拟　出处：《湖南大学》2015年硕士论文

【摘要】：我国大中型空调系统采用的主要冷热源技术方案包括冷水机组供冷+辅助供热(锅炉供热、热电站供热)、热泵机组供冷供热(空气源热泵、地源热泵、水源热泵)以及天然冷热源供冷供热。热源塔热泵属于空气源热泵的一种,采用宽带换热及喷淋溶液化霜等技术解决常用空气源热泵冬季工况运行室外换热器易结霜的缺点,在我国南方冬季低温高湿地区具有广阔的发展前景和节能优势。本课题首先简单介绍热源塔热泵的结构及工作原理,并根据热源塔热泵空调系统的特点,选取长沙市某建筑建立计算模型,以热源塔热泵空调系统、VRV空调系统和冷水机组+燃气锅炉空调系统对比来进行分析和研究。其次,利用建筑能耗模拟软件eQUEST对建筑模型分别采用热源塔热泵空调系统、VRV空调系统和冷水机组+燃气锅炉空调系统的能耗进行精确模拟分析,模拟计算各空调系统全年运行能耗。最后,根据模拟结果从一次能源消耗量、能耗系数和运行费用三个方面分析热源塔热泵空调系统在长沙地区的适用性;从初投资、年费用、寿命周期成本及热经济学成本四个工程经济指标方面分析出热源塔热泵空调系统在长沙地区运行的经济性,并通过热源塔热泵在冬季工况运行测试试验,测算其冬季工况运行性能。对比分析研究结果表明,热源塔热泵在长沙地区冬季工况供热运行稳定,化霜效果良好,热泵主机冬季制热性能系数COP达4.218;相比其他两种常用空调系统,初投资及运行费用低,全年综合能耗系数为0.38935,全年综合运行热经济成本为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.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU831

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