考虑循环水-能源桩热交换的双螺旋埋管能源桩变热流传热模型

魏子钧; 时刚; 吴仲明; 席省麟; 陈金灿; 蔡瀚琛

doi:10.19912/j.0254-0096.tynxb.2023-1487

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (1) : 319-327. DOI: 10.19912/j.0254-0096.tynxb.2023-1487

考虑循环水-能源桩热交换的双螺旋埋管能源桩变热流传热模型

魏子钧, 时刚, 吴仲明, 席省麟, 陈金灿, 蔡瀚琛

作者信息 +

HEAT TRANSFER MODEL OF DOUBLE HELIX BURIED PIPE ENERGY PILE WITH VARIABLE HEAT FLOW CONSIDERING HEAT EXCHANGE BETWEEN CIRCULATING WATER AND ENERGY PILE

Wei Zijun, Shi Gang, Wu Zhongming, Xi Shenglin, Chen Jincan, Cai Hanchen

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文章历史 +

摘要

将双螺旋换热器等效为三维有限长螺旋线热源,基于叠加原理建立考虑循环水与能源桩之间换热的双螺旋埋管能源单桩的变热流分段叠加传热模型。将双螺旋换热器划分为多个节段,采用时间与空间的分段叠加法,利用建立的变热流条件下的近似温度场解答与推导出的分段热流密度-水温方程组得到任意时间空间下的热流密度、出水口温度、循环水温和周围土体的温度场等。通过比较COMSOL数值模型,表明所建立模型的正确性。最后,基于该传热模型讨论双螺旋埋管能源桩换热温度场的空间分布和时间效应。

Abstract

The double helix heat exchanger is equated to a three-dimensional finite-length helical line heat source, based on the principle of superposition, a segmented superposition heat transfer model for a single pile of double helix buried pipe energy considering the heat exchange between circulating water and energy piles is established. The double helix heat exchanger is divided into multiple sections, using a segmented superposition method in both time and space. The heat flow density, outlet water temperature, circulating water temperature, and the surrounding soil's temperature field at any given time and space are obtained using the approximate temperature field solution under variable heat flow conditions and the derived segmented heat flow density-water temperature equation set. The accuracy of the model is demonstrated through comparison with a COMSOL numerical model. Finally, based on this heat transfer model, the spatial distribution and time effect of the heat transfer temperature field of the double helix buried pipe energy pile are discussed.

导出引用

魏子钧, 时刚, 吴仲明, 席省麟, 陈金灿, 蔡瀚琛. 考虑循环水-能源桩热交换的双螺旋埋管能源桩变热流传热模型[J]. 太阳能学报. 2025, 46(1): 319-327 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1487

Wei Zijun, Shi Gang, Wu Zhongming, Xi Shenglin, Chen Jincan, Cai Hanchen. HEAT TRANSFER MODEL OF DOUBLE HELIX BURIED PIPE ENERGY PILE WITH VARIABLE HEAT FLOW CONSIDERING HEAT EXCHANGE BETWEEN CIRCULATING WATER AND ENERGY PILE[J]. Acta Energiae Solaris Sinica. 2025, 46(1): 319-327 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1487

中图分类号： TK513.5

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