考虑桩身热容的能量桩传热性能分析
Analysis of Heat Transfer Performance of Energy Pile Considering Heat Capacity of Pile Body
- 防灾减灾工程学报 2019年39卷第4期 页码：599-606
- 作者机构：
- 作者简介：
- 基金信息：国家自然科学基金项目（51778585）;浙江省建设科研项目（2017K36）;杭州市建委科技项目（2017HK22）资助
DOI：10.13409/j.cnki.jdpme.2019.04.009
中图分类号： U473.1;TU83-
纸质出版：2019
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[1]闫振国,张正威,杨军.考虑桩身热容的能量桩传热性能分析[J].防灾减灾工程学报,2019,39(04):599-606.
闫振国, 张正威, 杨军. Analysis of Heat Transfer Performance of Energy Pile Considering Heat Capacity of Pile Body[J]. 2019, 39(4): 599-606.
[1]闫振国,张正威,杨军.考虑桩身热容的能量桩传热性能分析[J].防灾减灾工程学报,2019,39(04):599-606. DOI： 10.13409/j.cnki.jdpme.2019.04.009.
闫振国, 张正威, 杨军. Analysis of Heat Transfer Performance of Energy Pile Considering Heat Capacity of Pile Body[J]. 2019, 39(4): 599-606. DOI： 10.13409/j.cnki.jdpme.2019.04.009.
摘要
与传统垂直钻孔地埋热交换器相比
能量桩桩径较大
需考虑桩身热容对能量桩传热的影响。利用无限长线热源模型与无限长桩热源模型的解析解对不同桩身热容的能量桩在饱和黏土中的传热过程进行对比计算
分析桩身热容对能量桩传热性能的影响。当桩身为混凝土时
不同粗集料引起的热容差异对能量桩传热初期造成影响
桩径是影响能量桩传热的主要因素之一
而混凝土桩与钢桩的热容差异对能量桩传热的影响较大。分析表明
整个传热过程分为两个阶段
初期热源向桩内外传递的比例取决于桩身和桩周物质热扩散系数的相对值
桩身的热扩散系数相对越大
向桩内传递热量越快
桩外过余温度越低;当桩内温度达到均衡时
向桩内传递的热量取决于桩面处土体的温度以及桩身的热容。对于第一阶段
桩热源模型比线热源模型更能精细地描述能量桩的传热性能;对于第二阶段
两种模型的计算结果差别很小。
Abstract
Compared with the traditional used vertical borehole ground heat exchanger
energy pile has a larger diameter.The effect of heat capacity of pile body on heat transfer needs to be considered.The analytical solutions of infinite line-source model and infinite pile-source model were used to compare the heat transfer process within energy piles of different heat capacities in saturated clay
so as to examine the influence of heat capacity on heat transfer performance.For pile bodies made of concrete
the heat capacity difference caused by the different types of coarse aggregate had an impact on initial heat transfer performance.The pile diameter was seen as one of the major factors affecting heat transfer.The heat capacity difference between concrete piles and steel piles had a larger impact on heat transfer performance.The results showed that the whole heat transfer process is divided into two phases.In the first phase
the speed of heat transfer from the source to the inside and outside of the pile depends on the relative value of the thermal diffusion coefficient of the pile body and soils around the pile.The larger the pile’s thermal diffusion coefficient is
the faster the heat transfer to the inside of the pile
the lower the excess temperature outside the pile is.When the temperature inside the pile reaches a balance
the amount of heat transferred to the inside of the pile depends on the temperature of the soil around the pile and the heat capacity of the pile body.For the first phase
the pile-source model is more precise than the line-source model in describing the heat transfer performance.For the second phase
the difference between the results of the two models is negligible.
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references
饱和砂土热流耦合离心机试验的有限元分析 [J]. 熊泽琛,郭红仙,程晓辉. 防灾减灾工程学报 . 2017(04)
竖直埋管及桩基内埋管换热器传热模型研究进展 [J]. 陈乐,王尔觉,郭易木,张国柱. 防灾减灾工程学报 . 2017(04)
竖直埋管换热器热响应半径计算方法 [J]. 李晓星,胡夏闽,张正威. 农业工程学报 . 2015(17)
竖直地埋管换热器钻孔外换热解析模型研究现状 [J]. 赵石娆,张正威. 暖通空调 . 2014(01)
Numerical simulation of a novel spiral type ground heat exchanger for enhancing heat transfer performance of geothermal heat pump [J] . Reza Saeidi,Younes Noorollahi,Vahid Esfahanian. Energy Conversion and Management . 2018
A novel truncated cone helix energy pile: Modelling and investigations of thermal performance [J] . Guangqin Huang,Xiaofeng Yang,Yajiao Liu,Chunlong Zhuang,Hongyu Zhang,Jun Lu. Energy & Buildings . 2018
Energy piles for ground source heat pump applications: Comparison of heat transfer performance for different design and operating parameters [J] . Alberto Carotenuto,Pasquale Marotta,Nicola Massarotti,Alessandro Mauro,Gennaro Normino. Applied Thermal Engineering . 2017
Analysis and design methods for energy geostructures [J] . Peter Bourne-Webb,Sebastien Burlon,Saqib Javed,Sylvia Kürten,Fleur Loveridge. Renewable and Sustainable Energy Reviews . 2016
Review of analytical models for heat transfer by vertical ground heat exchangers （GHEs）: A perspective of time and space scales [J] . Min Li,Alvin C.K. Lai. Applied Energy . 2015
Constructability and heat exchange efficiency of large diameter cast-in-place energy piles with various configurations of heat exchange pipe [J] . Sangwoo Park,Chihun Sung,Kyoungsik Jung,Byonghu Sohn,Alexis Chauchois,Hangseok Choi. Applied Thermal Engineering . 2015
2D thermal resistance of pile heat exchangers [J] . Fleur Loveridge,William Powrie. Geothermics . 2014
Applications and Development of Modern Steel Pile Technology [J] . Veli-Matti Uotinen,Jukka Rantala. Procedia Engineering . 2013
Development of spiral heat source model for novel pile ground heat exchangers [J] . Yi Man,Hongxing Yang,Nairen Diao,Ping Cui,Lin Lu,Zhaohong Fang. HVAC&R Research . 2011 (6)
Heat transfer analysis of pile geothermal heat exchangers with spiral coils [J] . Ping Cui,Xin Li,Yi Man,Zhaohong Fang. Applied Energy . 2011 (11)
A new model and analytical solutions for borehole and pile ground heat exchangers [J] . Yi Man,Hongxing Yang,Nairen Diao,Junhong Liu,Zhaohong Fang. International Journal of Heat and Mass Transfer . 2010 (13)
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