| 土壤源热泵在西安地区应用的数值模拟研究 |
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| 引用本文： | 杜学丽,梁亚红. 土壤源热泵在西安地区应用的数值模拟研究[J]. 平顶山工学院学报, 2009, 18(3) |
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| 作者姓名： | 杜学丽 梁亚红 |
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| 作者单位： | 西安建筑科技大学,陕西西安,710055 |
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| 摘 要： | 针对西安地区的地质状况及气候特点,建立了管内流体、地埋管挟热器及周围土壤耦合传热模型,模拟了U型管内流体流动和传热、U型管与回填材料及土壤的传热.建立了连续模型和间歇模型,通过模拟分析得出结论:在西安地区应用土壤源热泵系统,热泵系统连续运行时间不能超过一定的时间(夏季为18h,冬季为7h),超出此时间后,由于换热器周围土壤中热量(或冷量)累积,使得换热环境恶化,换热器与周边土壤的换热量不断下降,导致热泵机组在不利工况下运行,长此以往,当U型管出口流体温度上升(下降到)到机组的保护温度时,压缩机将停止运行.与连续运行工况相比,在西安地区采用间歇运行工况时,地下换热器周围土壤可以得到一定程度的恢复,且间歇时间越长,恢复的程度越好.
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| 关 键 词： | 热泵 数值模拟 传热 连续模型 间隙模型 |
Numerical simulation of ground source heat pump applications in Xi'an |
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| DU Xue-li,LIANG Ya-hong. Numerical simulation of ground source heat pump applications in Xi'an[J]. Journal of Pingdingshan Institute of Technology, 2009, 18(3) |
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| Authors: | DU Xue-li LIANG Ya-hong |
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| Affiliation: | DU Xue-li,LIANG Ya-hong (School of Civil Engineering,Xi'an University of Architecture , Technology,Xi'an 710055,China) |
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| Abstract: | In the conditions of the geological conditions and climate characteristics of Xi'an,we established a fluid pipe,heat exchanger and the surrounding ground heat transfer model,simulated the U-tube fluid flow and heat transfer,Utube,the backfill material and soil heat transfer.In the paper,a continuous model and intermittent model were established respectively,through the simulation the author drew the following conclusion: when the ground source heat pump system is used in Xi'an,continuous run-time cannot exc... |
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| Keywords: | heat pump numerical simulation heat transfer continuous model intermittent model |
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