北京地区空气源热泵应用特性模拟与实证

发布时间：2019-02-25 10:12

【摘要】：随着人们经济水平的提升,人们对生活质量的要求逐渐提高,空调的普及率也是进一步扩大,使得建筑能耗量增加,面临日益严峻的能源形势,开发和利用节能新技术受到越来越多的重视。空气源热泵空调系统是以室外空气作为冷热源的空调模式,通过消耗少量的电能,将空气中低品位的热能转化为高品位的热能加以利用,热泵技术具有高效节能的作用,同时能够缓解环境污染的问题,因此近年来备受关注。空气源热泵空调系统的应用受到地理环境的影响,阻碍了该系统在北方地区的推广。本文针对空气源热泵系统在北方地区的应用情况进行实例研究,分析北京一家宾馆的建筑采暖空调系统工程,并对该建筑休息大厅当做典型空间进行温度、风速、相对湿度等相关参数的测试,并根据测试的数据进行分析得出,夏季该系统运行时能够满足空调设计规范的要求,冬季该系统运行时,虽然舒适性稍差,可大体上能够满足要求。与此同时,本文运行CFD软件对休息大厅的空间进行计算机模拟实验,CFD技术是模拟技术仿真的一种,在暖通空调领域应用较为广泛,其模拟的结果和实验测试的数值相对照,发现偏差不大,而且分析得出的结论基本相符合,证明空气源热泵系统在北京地区的应用是可行的。在确定可行性的基础上,对该建筑采用的空气源热泵空调系统进行经济性分析,并和溴化锂吸收式制冷机组方案、冷水机组+燃油热水炉方案进行类比,得出在北京地区运行该系统的方案属于最经济的。实验测试、模拟结果和经济性分析表明,空气源热泵空调系统在北京地区运行是可行的,为本地区以及类似环境条件下的地区应用该系统提供借鉴。
[Abstract]:With the improvement of people's economic level, people's demand for quality of life is gradually raised, the popularization rate of air conditioning is also further expanded, resulting in the increase of building energy consumption, and facing an increasingly serious energy situation. More and more attention has been paid to the development and utilization of new energy-saving technology. Air source heat pump air conditioning system is an air conditioning mode which takes outdoor air as the cold and heat source. By consuming a small amount of electric energy, the low grade heat energy in the air can be converted into high grade heat energy to be utilized. The heat pump technology has the function of high efficiency and energy saving. At the same time can alleviate the problem of environmental pollution, so in recent years has attracted much attention. The application of air-source heat pump air-conditioning system is affected by geographical environment, which hinders the popularization of air-source heat pump air-conditioning system in northern China. In this paper, the application of air source heat pump system in the northern area is studied, and the heating and air conditioning system engineering of a hotel in Beijing is analyzed. The rest hall of the building is used as a typical space for temperature and wind speed. The test of relative humidity and other related parameters, and according to the test data, it is concluded that the system can meet the requirements of air conditioning design specifications in summer, although the comfort of the system is slightly poor in winter, It can be satisfied by and large. At the same time, this paper runs CFD software to carry on the computer simulation experiment to the rest hall space, the CFD technology is one kind of simulation technology simulation, it is widely used in the field of HVAC, its simulation result is compared with the numerical value of the experimental test. It is found that the deviation is not large, and the conclusion of the analysis is basically consistent, which proves that the application of air-source heat pump system in Beijing area is feasible. On the basis of determining the feasibility, the economic analysis of the air-source heat pump air conditioning system used in the building is carried out, and the comparison is made with the scheme of libr absorption refrigeration unit and the scheme of oil-fired hot water heater of chiller. It is concluded that the scheme of running the system in Beijing is the most economical. The experimental test, simulation results and economic analysis show that the air-source heat pump air conditioning system is feasible in Beijing, which provides a reference for the application of the system in this area and similar environmental conditions.
【学位授予单位】：中国农业机械化科学研究院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU83;O35

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