空气源热泵直供地板辐射供暖的效果分析与研究

发布时间：2018-06-02 11:49

  本文选题：空气源热泵 + 直供地板辐射供暖　； 参考：《河北科技大学》2014年硕士论文

【摘要】：空气源热泵直供地板辐射供暖系统是一种新型的节能型系统,目前关于应用该新型系统供暖的地面热流密度和地表面平均温度等一些重要的热工参数无人研究,系统的制热性能也缺乏详尽的分析探讨。本文针对空气源热泵直供系统的地板辐射换热过程的热工特性和热泵机组的制热性能进行了全面的定量分析与研究。首先,建立了地板辐射供暖的物理模型和数学模型,确定了具体的边界条件,为数值模拟分析奠定了基础。然后运用FLUENT软件对不同热媒温度、不同管径、不同管间距、不同室内温度和不同面层材料进行了仿真模拟计算,得到一系列地板热工参数受各影响因素的数值解,并制作成了表格。通过分析地板上下表面热流密度值和地表面平均温度值与各影响因素绘制成的关系曲线图,得到了各影响因素对地面热流密度和地表面平均温度影响程度的大小。最后,通过建立空气源热泵直供供暖实验平台,测试了三台不同型号空气源热泵机组的制热性能,并利用模拟得到的数值解与实验测得的热泵机组制热量计算得出了某一特定地板辐射模型下的供暖面积,验证该系统的可应用性。通过对数值模拟结果和实验测试数据的分析研究,本文结论将能够为空气源热泵直供地板辐射供暖系统在设计方面、施工方面和运行维护方面等提供理论依据和实践参考,为其以后的应用推广奠定可靠的基础。
[Abstract]:The air-source heat pump direct-supply floor radiant heating system is a new type of energy-saving system. At present, some important thermal parameters such as the surface heat flux density and the average ground surface temperature are not studied. The heating performance of the system is also lack of detailed analysis and discussion. In this paper, the thermal characteristics of floor radiation heat transfer process of air-source heat pump direct supply system and the heating performance of heat pump unit are analyzed and studied. Firstly, the physical model and mathematical model of floor radiant heating are established, and the concrete boundary conditions are determined, which lays the foundation for numerical simulation and analysis. Then FLUENT software is used to simulate and calculate the different heat medium temperature, different pipe diameter, different pipe spacing, different indoor temperature and different surface material, and a series of numerical solutions of the influence factors on the floor thermal parameters are obtained. And made into a table. By analyzing the relationship between the heat flux value of the upper and lower surface of the floor and the mean temperature of the ground surface and the influence factors, the influence degree of each factor on the surface heat flux density and the average temperature of the ground surface is obtained. Finally, the heating performance of three different types of air-source heat pump units was tested by establishing an air-source heat pump direct-supply heating experimental platform. The heating area under a specific floor radiation model is calculated by using the numerical solution obtained by simulation and the heat output measured experimentally by the heat pump unit, and the applicability of the system is verified. Through the analysis of numerical simulation results and experimental test data, the conclusion of this paper will be able to provide theoretical basis and practical reference for the design, construction and operation and maintenance of air-source heat pump direct-supply floor radiant heating system. It will lay a reliable foundation for its application and popularization in the future.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU832.1
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本文编号：1968655