华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (11): 24-27.

• • 上一篇    下一篇

土壤空气换热系统传热的数值模拟

吴会军1 朱冬生1 孙加龙2   

  1. 1.华南理工大学 传热强化与过程节能教育部重点实验室‚广东 广州510640; 2.珠江水利委员会科学研究所‚广东 广州510611
  • 收稿日期:2004-02-04 出版日期:2004-11-20 发布日期:2015-09-08
  • 通信作者: 吴会军(1978-)‚男‚博士生‚主要从事传热强化与节能、吸附技术和CFD模拟的研究。 E-mail:wuhuijun@tsinghua.org.cn
  • 作者简介:吴会军(1978-)‚男‚博士生‚主要从事传热强化与节能、吸附技术和CFD模拟的研究。
  • 基金资助:
    国家自然科学基金资助项目(20346001);广东 省自然科学基金资助项目(011584);广州市科技计划项目; 教育部优秀青年教师资助计划项目;高等学校博士学科点 专项科研基金项目

Numerical Simulation of the Heat Transfer in an Earth-air Heat Exchange System

Wu Hu-i jun1 Zhu Dong-sheng1 Sun Jia-long2   

  1. 1.Key Laboratory of Enhanced Heat Transfer &Energy Conservation of the Ministry of Education‚ South China Univ.of Tech.‚Guangzhou510640‚Guangdong‚China; 2.Scientific Research Institute‚Pear River Water Resources Commission‚Guangzhou510611‚Guangdong‚China
  • Received:2004-02-04 Online:2004-11-20 Published:2015-09-08
  • Contact: 吴会军(1978-)‚男‚博士生‚主要从事传热强化与节能、吸附技术和CFD模拟的研究。 E-mail:wuhuijun@tsinghua.org.cn
  • About author:吴会军(1978-)‚男‚博士生‚主要从事传热强化与节能、吸附技术和CFD模拟的研究。

摘要: 采用土壤自然温度场与空气冷却效应的叠加方法‚对土壤-空气换热系统的出 口温度和传热性能进行了数值模拟‚并通过计算探讨了埋管的深度、管长和管径对换热器 进出口温度的影响.分析结果表明‚换热器的出口温度随着埋管入口温度的周期性变化而 呈周期性变化;随着埋管深度和管长的增加‚换热器的出口温度降低‚同时出口温度的变 化幅度减小;随着管径的减小‚埋管出口温度降低‚出口温度波动减小‚换热系统的降温供 冷性能提高。

关键词: 土壤-空气换热系统, 传热, 数值模拟, 节能

Abstract: The outlet temperature and heat transfer performance of an earth-air heat exchange system were numerically simulated by the superposition of natural ground temperature field and the air cooling effect.The influences of pipe depth‚length and diameter on the outlet temperature of the exchanger were also studied.It is concluded by analysis that the outlet temperature of the heat exchanger changes periodically with the periodical change of pipe inlet temperature‚and that‚with the increase in the pipe depth and length‚the outlet temperature and its variation degree of the exchanger decrease.The same phenomenon is obtained from the pipe with the decrease in pipe diameter.At the same time‚the cooling performance of the earth-air system increases.

Key words: earth-air heat exchange system, heat transfer, numerical simulation, energy conservation

中图分类号: