| 土壤-空气换热系统传热的数值模拟 |
| |
| 引用本文： | 吴会军,朱冬生,孙加龙.土壤-空气换热系统传热的数值模拟[J].华南理工大学学报(自然科学版),2004,32(11):24-27. |
| |
| 作者姓名： | 吴会军 朱冬生 孙加龙 |
| |
| 作者单位： | 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 |
| |
| 基金项目： | 国家自然科学基金资助项目 (2 0 346 0 0 1)，广东省自然科学基金资助项目 (0 115 84 )，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 |
| |
| 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 |
| 文章编号： | 1000-565X(2004)11-0024-04 |
| 修稿时间： | 2004年2月4日 |
Numerical Simulation of the Heat Transfer in an Earth-air Heat Exchange System |
| |
| Wu Hui-jun,Zhu Dong-sheng,Sun Jia-long.Numerical Simulation of the Heat Transfer in an Earth-air Heat Exchange System[J].Journal of South China University of Technology(Natural Science Edition),2004,32(11):24-27. |
| |
| Authors: | Wu Hui-jun Zhu Dong-sheng Sun Jia-long |
| |
| Institution: | Wu Hui-jun 1 Zhu Dong-sheng 1 Sun Jia-long 2 |
| |
| 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. |
| |
| Keywords: | earth-air heat exchange system heat transfer numerical simulation energy conservation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
