5匹空气源高温热泵理论与实验研究

发布时间：2018-03-11 22:07

本文选题：高温热泵　切入点：空气源　出处：《华中科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：在众多的前人研究内容的基础上，常温热泵技术已经相当的成熟，得到了广泛的应用，但是由于出水温度较低，限制了其应用的领域和范围，若能将使用侧的出水水温提高到80℃以上，发展前景更好，热泵的高温化已经是国际上热泵的发展趋势，很多的国内外专家学者大都以水源作为低温热源来研究高温热泵，几乎没有采用空气作为高温热泵的低温热源，本论文采用空气作为低温热源的高温热泵热水机，很具有实用价值。实验所用的工质采用混合工质，通过方程求解软件对某些工质进行理论循环性能计算，在冷凝温度为85℃、蒸发温度为25℃的条件下，综合考虑热力性能和环保性，选择三种作为组分，组分的质量比通过模拟软件进行模拟，最终确定组分比例为A/B/C为80%:12%:8%，以此作为混合工质进行实验。同时设计了系统的结构和选择了设备部件，，制造出一台试验样机。为了研究变工况运行和环境温度对高温热泵热水机的性能影响，分别在20℃、25℃、30℃、35℃、40℃、45℃不同的环境温度，当出水温度分别为30℃、40℃、50℃、60℃、70℃、80℃时做了性能分析比较。结果表明，采用新的混合工质，制热性能比较好，压缩机排气温度在环境温度为20℃~40℃之间变化，排气温度不超过110℃，当环境温度45℃时，出水温度达到80℃后，排气温度达到最大值。此结果填补了空气源热泵在高温制热的数据空白，性能测试结果优于现有市场销售的高温热泵。若将其用于太阳能空调系统中取代电加热，同时对于两种情况下的运行进行了经济效益和社会效益分析，以上内容为高温空气源热泵的发展和推广提供了参考，具有一定的实用价值。
[Abstract]:Based on the previous research on the content of many, room temperature heat pump technology is already very mature and has been widely used, but because the water temperature is low, limiting the application range, the water temperature can be used if the side is raised to 80 DEG C, better prospects for development, the high temperature heat pump is the international development trend of heat pump, many experts and scholars at home and abroad are mostly in the water as heat source of high temperature heat pump, almost no using air as heat source and high temperature heat pump, this paper uses air as high temperature low temperature heat source heat pump water heater, it has practical value.
The refrigerant used in the experiment with mixed refrigerant, the refrigerant of certain theoretical cycle performances by equation calculation software, the condensing temperature is 85 DEG C, the evaporation temperature of 25 DEG C, considering the thermal performance and environmental protection, three as the components, quality components than by simulation the software simulation, and ultimately determine the composition ratio of A/B/C is 80%: 12%: 8%, as a mixture of experimental design. At the same time, the structure of the system and choose the equipment components, create a test prototype. In order to study the performance effects of varying operating conditions and environmental temperature on the high temperature heat pump water heater, respectively 20 C, 25 C, 30 C, 35 C, 40 C, 45 C at different ambient temperature, when the water temperature was 30 C, 40 C, 50 C, 60 C, 70 C, 80 C do the performance analysis and comparison.
The results show that the new refrigerant mixture, heating performance is good, the exhaust temperature of the compressor when the environment temperature is between 20 DEG ~40 DEG, the exhaust temperature does not exceed 110 degrees, when the ambient temperature is 45 degrees, the water temperature reaches 80 degrees Celsius, the exhaust temperature reaches the maximum value. This result is to fill the gaps in the air source heat pump in high temperature heating, high temperature heat pump performance test results are superior to the existing market. If it is used to replace the electric heating solar air conditioning system, at the same time for the two cases of operation were analyzed the economic benefit and social benefit, provide a reference for the development and promotion of the above high temperature air source heat pump, has a certain practical value.

【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH38

【参考文献】