Comparative Study on Heat Transfer Efficiency of PCC and Traditional Energy Pile

黄旭; 孔纲强; 刘汉龙; 方金城; 杨挺

doi:10.13409/j.cnki.jdpme.2018.05.014

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Comparative Study on Heat Transfer Efficiency of PCC and Traditional Energy Pile

更新时间：2025-12-11

- Comparative Study on Heat Transfer Efficiency of PCC and Traditional Energy Pile
- Vol. 38, Issue 5, Pages: 867-873(2018)
- 作者机构：
- 作者简介：
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- DOI：10.13409/j.cnki.jdpme.2018.05.014
  CLC： U473.1
- Published：2018
- 稿件说明：
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[1]黄旭,孔纲强,刘汉龙,方金城,杨挺.不封底PCC能量桩与传统能量桩换热效率对比研究[J].防灾减灾工程学报,2018,38(05):867-873.

黄旭, 孔纲强, 刘汉龙, et al. Comparative Study on Heat Transfer Efficiency of PCC and Traditional Energy Pile[J]. 2018, 38(5): 867-873.
[1]黄旭,孔纲强,刘汉龙,方金城,杨挺.不封底PCC能量桩与传统能量桩换热效率对比研究[J].防灾减灾工程学报,2018,38(05):867-873. DOI： 10.13409/j.cnki.jdpme.2018.05.014.

黄旭, 孔纲强, 刘汉龙, et al. Comparative Study on Heat Transfer Efficiency of PCC and Traditional Energy Pile[J]. 2018, 38(5): 867-873. DOI： 10.13409/j.cnki.jdpme.2018.05.014.

摘要

PCC能量桩是一种基于PCC桩的新型能量桩技术

目前针对PCC能量桩在制冷和供热过程中的换热效率及热传导特性的研究仍相对较少。基于模型试验方法

开展循环温度作用下不封底PCC能量桩、传统能量桩的温度响应测试

实测获得桩身、桩周土热响应变化规律;继而

结合数值模拟方法

对比分析进/出水温度等因素对不封底PCC能量桩换热效率的影响规律。研究结果表明

本文试验条件下

夏季制冷模式下不封底PCC能量桩的热响应略大于传统能量桩

而冬季供热模式下差异不大;相同条件下

夏季制冷模式下不封底PCC能量桩的换热效率较传统能量桩高出24%

而冬季供热模式下仅高7%。

Abstract

PCC energy pile is one of the new type energy piles based on PCC pile technology.However

there are relatively few studies focus on the heat transfer efficiency and heat transfer characteristics of this new type energy pile during cooling and heating.On the basis of model test method

the temperature response tests for the uncovered PCC energy pile and the traditional energy pile were carried out.The thermal response of the pile body and the soil around the pile were measured.Then

on the basis of numerical calculation method

the law of inlet/outlet temperature and the heat exchange rate of the two energy piles were comparatively analyzed.It shows that the thermal response of the uncovered PCC energy pile is a little higher than that of the traditional energy pile under same experimental conditions in summer cooling mode

but the difference is not obvious in winter heating mode.Compared with traditional energy piles

the heat transfer efficiency of the uncovered PCC energy piles can improve nearly 24%in summer cooling mode and7%in winter heating mode under the same conditions.

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references

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