道路融雪地能利用热循环基本性能模拟分析  

Simulation Analysis of Basic Performance of Road Hydronic Ice-Snow Melting by Earth Energy

作　　者：高青[1] 刘研[1] 林密[1] 

机构地区：[1]吉林大学热能工程系,长春市130025

出　　处：《公路》2009年第7期350-355,共6页Highway

基　　金：国家自然科学基金资助项目No.50776039

摘　　要：针对道路集热蓄能融雪化冰过程进行分析,建立地能利用热泵循环道路融雪化冰基本过程模型,开展数值计算分析。重点探讨降雪和融雪过程地源热泵运行和地下换热过程的基本性能,以及降雪量、气候环境温度、地下初始温度的影响规律。分析表明,常规降雪量的道路融雪平均热耗率为250 W/m2左右,热泵系统性能指数COP维持在4以上。地下初始温度增加将对地能利用热泵循环效率带来显著的提升空间,表明太阳能路面集热和季节性地下蓄能技术具有巨大潜力。An innovative hydronic ice-snow melting （HISM） coupled with slab solar collection （SSC） and thermal energy storage （TES） is researched and the model of numerical simulation is established. The basic performance of hydronic ice-snow melting on the road by the ground source heat pump （GSHP） is investigated and the influence law of snowfall, ambient temperature and initial underground temperature is discussed. The ice-snow melting of a practical snowfall is simulated at the sample of Changchun City. The results show that in the condition of middling snowfall the mean heat releases about 250 W/m^2 , the COP （coefficient of performance） of heat pump system keeps ordinarily above 4. It is indicated that the higher initial underground temperature makes a bigger effect on the rising efficiency of heat pump in the hydronic ice-snow melting. Therefore, the integrative slab solar collection and seasonal underground thermal energy storage （UTES）, which actually increases the underground temperature, will provide an advantageous development potential.

关 键 词：道路工程 融雪化冰 性能 模拟分析 

分 类 号：U418[交通运输工程—道路与铁道工程]