摘要
首先介绍了太阳能地下混凝土储热桩热量利用率不足的现状,通过在已有太阳能混凝土储热桩传热模型的基础上,对不同取热工况中影响储热桩温度场变化的各种因素进行了传热过程的模拟分析,得出了持续取热及间断取热2种不同运行工况及热流密度、导热系数和比热容、埋管间距对桩内温度场变化的影响,然后合理的选择最优参数,分析桩内温度场的变化,提高取热效率,使混凝土桩内热量充分利用。
This paper first introduces the present situation of insufficient heat utilization ratio of solar energy in the under- ground concrete storage pile, and based on the existing equivalent model, stimulation analysis of heat transferring process is made on the factors affecting temperature field change under different heat extracting operation conditions. It is known that the temperature field change in heat storage pile is affected by different continuous ＆ intermittent operation modes, heat flux, thermal conductivity, specific heat capacity and underground pipe space; and then optimal parameters are reasonable selected to reduce variation of soil temperature field and make full use of heat in concrete pile.
出处
《探矿工程（岩土钻掘工程）》
2012年第6期54-57,67,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
长春市科技计划项目(2007SF12)
吉林大学"985"东北资源与环境科技创新平台联合资助项目
关键词
地下混凝土储热桩
温度变化
取热工况
underground concrete heat storage pile
temperature change
heat extracting operation condition
