A modeling study on the heat storage and release characteristics of a phase change material based double-spiral coiled heat exchanger in an air source heat pump for defrosting
A modeling study on the heat storage and release characteristics of a phase change material based double-spiral coiled heat exchanger in an air source heat pump for defrosting
复制标题
空气源热泵除霜相变材料双螺旋盘管换热器储放热特性建模研究
DOI：
10.1016/j.apenergy.2018.12.057
复制
发表时间：
2019-02
期刊：
影响因子：
11.2
通讯作者：
Yao Yan
中科院分区：
文献类型：
--
作者：
Hu Wenju;Song Mengjie;Jiang Yiqiang;Yao Yang;Yao Yan
由于模型开发的困难和缺乏成熟的仿真工具，围绕相变材料双螺旋盘管换热器的建模研究非常有限。当相变材料双螺旋盘管换热器应用于空气源热泵除霜时，其模型开发变得更加复杂。为了解决这一基本问题，建立了这种换热器的数学模型，并提出了数值求解方法。为了提高相变材料传热过程数值模拟的收敛性和速度，对相变材料传热过程进行了空间和时间上的特殊处理。根据圆形边界，采用隐式求解方法，减少网格数量，方便计算。最后在特制的热泵系统中分别对该模型在结霜和除霜过程中的蓄热和放热过程进行了实验验证。在−0.71-1.64 °C的小范围内，证明了偏差条件是可以接受的。还进一步讨论了建模工作的潜在用途和局限性。本文的研究成果对热泵和其他相变材料换热器的优化设计具有重要意义。
There were very limited modeling studies are around a phase change material based double-spiral coiled heat exchanger, due to the difficulties of model development and the lack of mature simulation tools. When a phase change material based double-spiral coiled heat exchanger applied in an air source heat pump for defrosting, its model development becomes more complicated. To solve this fundamental problem, a mathematical model for such heat exchanger was developed, as well as the numerical solution method proposed. To improve the convergence and the speed of numerical simulation of the phase change material’s heat transfer process, both of special treatments in space and time were conducted. According to the circular shape boundary, an implicit solution method was used to reduce the number of grids so that computation became convenient. Heat storage and release processes of this model were finally experimentally validated in a specially built heat pump system during frosting and defrosting, respectively. The deviation conditions are demonstrated acceptable with the mean average temperature differences at the small range of −0.71–1.64 °C. Potential uses and limitations of the modeling work are also further discussed. Contribution of this work are meaningful for the optimization of heat pump and any other systems, where applied a phase change material based heat exchanger.
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影响因子：
11.2
作者：
Mengjie Song;D. Pan;Ning Li;S. Deng
通讯作者：
Mengjie Song;D. Pan;Ning Li;S. Deng
影响因子：
6.4
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/s0017-9310(97)00042-2
发表时间：
1997-10-01
影响因子：
5.2
作者：
Lin, CX;Ebadian, MA
通讯作者：
Ebadian, MA
影响因子：
6.4
作者：
Mengjie Song;Ailu Chen;N. Mao
通讯作者：
Mengjie Song;Ailu Chen;N. Mao