[1]山占鹏,杨昌智.土壤源热泵系统测试与设计方法研究[J].西安建筑科技大学学报(自然科学版),2021,53(06):835-841859.[doi:10.15986/j.1006-7930.2021.06.007 ]
　SHAN Zhanpeng,YANG Changzhi.Restudy on the test and design method of ground source heat pump system[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(06):835-841859.[doi:10.15986/j.1006-7930.2021.06.007 ]
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土壤源热泵系统测试与设计方法研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年06期
页码:
835-841859
栏目:
出版日期:
2021-12-20

文章信息/Info

Title:
Restudy on the test and design method of ground source heat pump system
文章编号:
1006-7930(2021)06-0835-07
作者:
山占鹏;  杨昌智
(湖南大学 土木工程学院,湖南 长沙 410082)
Author(s):
SHAN Zhanpeng;  YANG Changzhi
(College of Civil Engineering, Hunan University, Changsha 410082, China)
关键词:
土壤源热泵;  传热模型;  换热特性;  测试方法;  设计方法
Keywords:
ground source heat pump;  heat transfer model;  heat transfer performance;  test method;  design method
分类号:
TU83; TK523
DOI:
10.15986/j.1006-7930.2021.06.007
文献标志码:
A
摘要:
土壤源热泵能否被进一步推广应用,很大程度取决于其准确、可靠的测试与设计方法. 现行规范中采用恒热流热响应法测试土壤的导热系数等热物性参数,设计人员据此进行埋管量设计. 然而,受测试条件和理论模型限制,整个测试过程及后续数据处理方法存在诸多不确定因素,客观上造成通过测试较难提供准确的热物性参数,设计时也难以准确计算所需埋管量. 为解决这一问题,首先基于线热源模型和理论分析,提出了反映土壤侧换热规律的动态传热模型. 其次,进行恒温热响应测试,研究土壤源热泵不同运行模式下的换热特性. 实验验证结果表明,建立的模型对恒温热响应测试出口温度的估计,运行5 h后绝对误差小于0.5 ℃,相对误差小于2%. 提出的土壤源热泵测试与设计方法,可为土壤源热泵系统优化设计和高效运行提供理论指导.
Abstract:
One of the keys to further popularize the application of ground source heat pumps(GCHP)lies in their accurate and reliable testing and design methods. In the current specification, the constant-heat flow thermal response method is used to test the thermal conductivity and other thermal parameters of the soil, and the designer designs the size of the ground heat exchanger(GHE)accordingly. Due to the limitation of test conditions and theoretical models, there are many uncertain factors in the whole test process and subsequent data processing method, which objectively make it difficult to provide accurate thermal property parameters through the test, and which also make it difficult to accurately calculate the required size of GHE during design. To solve these problems, based on the linear heat source model and theoretical analysis, this paper firstly proposes a dynamic heat transfer model reflecting the soil side heat transfer law. Secondly, the constant-temperature thermal response test is carried out to study the heat transfer performance and related influencing factors under different operating modes of GCHP. The experimental verification results show that the absolute error of the model established in this paper is less than 0.5 ℃ and the relative error is less than 2% for the estimation of the outlet temperature of the constant temperature thermal response test after 5 h of operation. The new method for testing and design of GCHP proposed in this paper can provide an important theoretical direction for the optimal design and efficient operation of GCHP.

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备注/Memo

备注/Memo:
收稿日期:2021-07-26修改稿日期:2021-08-31
基金项目:国家自然科学基金资助项目(51578221)
第一作者:山占鹏(1996-),男,硕士生,主要从事可再生能源技术研究. E-mail:shan_zp@hnu.edu.cn 通信作者:杨昌智(1963-),男,教授,主要从事建筑节能方向研究. E-mail:yang0369@126.com

更新日期/Last Update: 2021-12-20