空气源热泵水箱温度的解析解及其实验验证

发布时间：2018-03-07 17:36

本文选题：解析解模型　切入点：线圈模型　出处：《太阳能学报》2016年08期 　论文类型：期刊论文

【摘要】：针对双螺旋或多螺旋换热器的非稳态传热问题,提出一种获得换热器水箱温度分布的解析解模型。该模型将水箱传热问题简化为基于线圈模型的有限大空间内的二维绝热边界传热问题。采用虚拟热源法和热源温度场叠加法,推导出有限长线圈热源在有限大绝热空间内进行非稳态导热的水箱温度场解析解表达通式。以直热式空气源热泵热水器为例,在不同环境温度条件下,对蓄热水箱的非稳态温度场进行实验测量,实验结果与理论解析解模型获得的计算结果一致,从而验证解析解模型的可靠性和准确性。该文提出的螺旋换热器水箱导热解析解模型为研究该问题提供一种快捷而有效的分析方法。
[Abstract]:In view of the unsteady heat transfer problem of double-helical or multi-helical heat exchangers, An analytical solution model for obtaining the temperature distribution of the heat exchanger tank is presented, in which the heat transfer problem of the water tank is reduced to a two-dimensional adiabatic boundary heat transfer problem in a finite space based on the coil model. The virtual heat source method and the superposition method of the heat source temperature field are used. An analytical expression of the temperature field of a water tank in which a finite length coil heat source carries out unsteady heat conduction in a finite adiabatic space is derived. Taking a direct-heating air-source heat pump water heater as an example, under different ambient temperature conditions, The unsteady temperature field of the regenerative tank is measured experimentally. The experimental results are in agreement with the calculated results obtained by the theoretical analytical solution model. In order to verify the reliability and accuracy of the analytical solution model, the analytical solution model of the helical heat exchanger tank is presented in this paper, which provides a fast and effective analytical method for the study of the problem.
【作者单位】：西安建筑科技大学环境与市政工程学院;
【基金】：“十一五”国家科技支撑计划(2008BAJ08B07-1)
【分类号】：TU83

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