太阳能季节性土壤蓄热影响因素分析  

Analysis on Influence Factors of Solar Seasonal Underground Thermal Storage

作　　者：张文雍[1] 郑茂余[1] 王潇[1] 张洪杰 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]机械工业第六设计研究院第三工程所,郑州450007

出　　处：《建筑科学》2010年第6期81-86,共6页Building Science

基　　金：黑龙江省科技攻关项目(哈墙改建节科2007-04)

摘　　要：本文利用FLUENT软件建立了地下群井换热器的三维非稳态流固耦合数理模型,并将太阳能集热器和板式换热器模型作为用户自定义函数动态加载到地下群井换热器模型中,实现了对太阳能季节性土壤蓄热过程的动态仿真。在此基础上分析了在系统设备容量不变的情况下,地下埋管以及太阳能集热器的布置形式对土壤蓄热特性的影响。结果表明,选择合适的设备布置形式可以大大提高蓄热能效比以及土壤换热器蓄热率。In this paper, a three-dimensional unsteady state fluid-solid coupled mathematical model of multiple ground heat exchanger （MGHE） was established,and the mathematical models of solar collector and plate heat exchanger were dynamically loaded into the MGHE model as user-defined functions （UDF）, therefore, the dynamical simulation of solar seasonal underground thermal storage process was realized. Furthermore, the effects of the layout of MGHE and solar collector on underground thermal storage were analyzed under the unchanged equipment capacity condition. The simulation results indicated that the appropriate layout of the equipment could greatly increase the energy efficiency ratio, as well as the thermal storage efficiency.

关 键 词：季节性蓄热 太阳能集热器 群井换热器 布置形式 FLUENT 

分 类 号：TK512[动力工程及工程热物理—热能工程] TQ051.5[化学工程]