CIESC Journal ›› 2025, Vol. 76 ›› Issue (4): 1545-1558.DOI: 10.11949/0438-1157.20240958

• Fluid dynamics and transport phenomena • Previous Articles     Next Articles

Research on heating performance of direct-condensation thermal storage aluminum radiant heating panel under multiple working conditions

Chengcheng XU1,3(), Suola SHAO2(), Wenjian WEI1, Xu ZHENG2   

  1. 1.College of Civil Engineering and Architecture, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, Zhejiang, China
    2.School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China
    3.Nanxun Innovation Institute, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, Zhejiang, China
  • Received:2024-08-25 Revised:2024-12-03 Online:2025-05-12 Published:2025-04-25
  • Contact: Suola SHAO

多工况下直凝式蓄热型铝制辐射板换热器供暖性能研究

许成城1,3(), 邵索拉2(), 魏文建1, 郑旭2   

  1. 1.浙江水利水电学院建筑工程学院,浙江 杭州 310018
    2.浙江理工大学建筑工程学院,浙江 杭州 310018
    3.浙江水利水电学院南浔创新研究院,浙江 杭州 310018
  • 通讯作者: 邵索拉
  • 作者简介:许成城(1994—),男,博士,讲师,chengchengxu_seu@163.com
  • 基金资助:
    浙江理工大学科研基金项目(21052322-Y);南浔青年学者项目(RC2022021082)

Abstract:

A new type of aluminum, fanless, built-in heat storage material direct condensing radiant panel heat exchanger (AHE) is proposed, which can be combined with an air source heat pump system for indoor winter heating in buildings. Based on the heat transfer mechanism of the heat storage type direct condensation radiant panel and considering the influence of refrigerant flow on heat transfer performance, a flow heat transfer mathematical model suitable for AHE was established, and the accuracy of the model was verified through experiments. The results showed that the numerical simulation results of heat dissipation, pressure drop, and heat exchanger surface temperature had an average deviation of less than 5% from the experimental values. Numerical simulations were conducted on the thermal performance of AHE under 168 working conditions, and the results showed that increasing the condensation temperature and refrigerant flow rate helps to improve the heat transfer intensity, while increasing the condensation temperature is beneficial for reducing flow losses. In 168 working conditions, the average temperature difference between AHE refrigerant and surface temperature was 9.7℃, and the maximum temperature difference between adjacent structural layers of AHE was 6.3℃ between the copper tube and the water layer. Finally, a heat dissipation characteristic formula suitable for AHE thermal performance prediction was proposed, providing a technical basis for performance analysis and optimization of radiant heating panel systems.

Key words: radiation, numerical simulation, thermal storage materials, air source heat pump, formula for heat dissipation characteristics, optimization

摘要:

提出了一种新型铝制、无风机、内置蓄热材料的直接冷凝式辐射板换热器(aluminum radiant heating panel exchanger,AHE),可与空气源热泵系统结合进行建筑室内冬季供暖。基于蓄热型直凝式辐射板的传热机理并考虑制冷剂流动对换热性能的影响,建立了适合AHE的流动换热模型,并通过实验验证了该模型的准确性。结果表明,散热量、压降、换热器表面温度的数值模拟结果与实验值平均偏差小于5%。针对168组运行工况下AHE的热性能进行了数值模拟,结果表明冷凝温度和制冷剂流量的提升有助于提高换热强度,同时冷凝温度的升高有利于降低流动损失。在168组工况中,AHE制冷剂和表面温度的平均温差为9.7℃,AHE各相邻结构层最大温差在铜管和水层间,为6.3℃。最后提出了适用于AHE热性能预测的散热量特征公式,为辐射板供暖系统性能分析和优化提供了技术基础。

关键词: 辐射, 数值模拟, 蓄热材料, 空气源热泵, 散热特征公式, 优化

CLC Number: