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现代地质 ›› 2022, Vol. 36 ›› Issue (05): 1440-1446.DOI: 10.19657/j.geoscience.1000-8527.2022.053

• 碳储科学与地热开发 • 上一篇    

中深层套管换热器短期无干扰名义取热量计算解析方法

汤昌福1,2(), 罗万静3(), 黄骏玮3   

  1. 1.安徽省煤田地质局勘查研究院,安徽 合肥 230088
    2.中国科学技术大学 热科学和能源工程系,安徽 合肥 230026
    3.中国地质大学(北京) 能源学院,北京 100083
  • 收稿日期:2022-03-02 修回日期:2022-06-23 出版日期:2022-10-10 发布日期:2022-11-03
  • 通讯作者: 罗万静
  • 作者简介:罗万静,男,教授,博士生导师,1980年出生,油气田开发专业,主要从事复杂裂缝系统渗流、油气藏开发、地热能开发利用方面的科研工作。Email: luowanjing@cugb.edu.cn
    汤昌福,男,高级工程师,1982年出生,油气田开发专业,主要从事油气、地热能开发利用方面的研究工作。Email: cftang@mail.ustc.edu.cn
  • 基金资助:
    安徽省重点研究与开发计划项目(201904a07020105)

Method for Calculating Short-term Non-interference Nominal Heat Rate of Deep Coaxial Heat Exchangers

TANG Changfu1,2(), LUO Wanjing3(), HUANG Junwei3   

  1. 1. Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei, Anhui 230088, China
    2. Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
    3. School of Energy Resources, China University of Geosciences, Beijing 100083, China
  • Received:2022-03-02 Revised:2022-06-23 Online:2022-10-10 Published:2022-11-03
  • Contact: LUO Wanjing

摘要:

从地下传热基本原理出发,考虑地温梯度影响,建立了中深层套管换热器进出口流体平均温度解析解和长时间近似解,推导了中深层套管换热器短期无干扰名义取热量计算解析公式,并通过与文献中结果对比进行了验证。研究结果表明,中深层套管换热器短期无干扰名义取热量是地温梯度的线性函数。短期无干扰名义取热量计算解析公式简单实用,可以实现中深层套管换热器短期换热性能快速评价。

关键词: 套管换热器, 地温梯度, 名义取热量, 解析解

Abstract:

Based on basic underground heat transfer mechanism, an analytical solution of the mean inlet and outlet fluid temperature, accounting for the geothermal gradient effect is formulated for deep coaxial heat exchanger. An approximate solution is also derived. Furthermore, a method for calculating short-term non-interference nominal heat rate of deep coaxial heat exchangers is developed and validated by comparison with published results. It is revealed that the nominal heat rate is a linear function of geothermal gradient. The analytical method proposed here is very practical and requires less computation cost, which enables rapid evaluation of short-term thermal capacity of deep coaxial heat exchangers.

Key words: coaxial heat exchanger, geothermal gradient, nominal heat rate, analytical solution

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