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对基于地道风空气源热泵应用的可行性进行分析,建立了地道传热温度场的数学模型和计算的内、外边界条件,进而对数学模型进行简化处理,并采用拉普拉斯数学方法计算求解,得到空气经地下风道传热的计算公式。随后建立地道传热环境的物理模型和边界条件,并采用数值计算软件FLUENT对物理模型进行数值模拟计算,将动态传热边界条件加入求解,然后将计算所得结果与实验实际测量取得的数据进行对比分析,得出基于地道风的空气源热泵冷热源间歇散热传热的特点,以及应用地下风道传热时要注意的关键问题。这对于地道风降温技术以及基于地道风的空气源热泵系统的传热研究有一定应用价值。
Based on the feasibility analysis of the application of the tunnel source air source heat pump, the mathematical model of the tunnel heat transfer field and the calculated internal and external boundary conditions are established. Then the mathematical model is simplified and calculated by Laplacian method Solve, get the air through the underground duct heat transfer formula. Then the physical model and boundary conditions of the tunnel heat transfer environment are established. The numerical simulation software FLUENT is used to simulate the physical model. The dynamic heat transfer boundary conditions are added to solve the problem. Then the calculated results are compared with those obtained from the experiment Based on the analysis, the characteristics of intermittent cooling and heat transfer of air source heat pump based on authentic wind and the key problems to be paid attention to in the application of underground duct heat transfer are obtained. This is of certain application value to the research of tunnel heat transfer technology and the heat transfer of air source heat pump system based on tunnel-type air.