基于热平衡原理的地埋管地源热泵系统开发利用规划评价Development and Utilization Planning Evaluation of Ground Source Heat Pump System Based on Heat Balance Principle
周宇坤,骆祖江,郭华
摘要(Abstract):
为了保障海门地区地埋管地源热泵系统的可持续开发利用,科学合理设计地埋管地源热泵系统布置方案,准确评价系统的浅层地热能可采资源量,根据研究区水文地质和浅层地热地质条件,基于热平衡原理,建立了海门地区地埋管地源热泵系统水-热三维耦合数值模型,预测分析了未来地源热泵系统运行期间不同布置方案下浅层土体温度场的动态变化规律。通过对比分析,针对出现的热堆积问题,确定了克服土体热堆积的地埋管优化布置方案,评价了研究区地埋管地源热泵系统的浅层地热能可采资源量。结果表明,海门地区地埋管地源热泵系统开发可分为6个区,各区地埋管间距在29~39m,能够保证未来运行10a内土体温度升幅不超过0.5℃,地热能可持续开采。在此方案下,研究区地埋管地源热泵系统可采资源潜力夏季为3.851 157×10~4m~2/km~2,冬季为7.586 812×10~4m~2/km~2。
关键词(KeyWords): 热平衡;地埋管地源热泵系统;热堆积;浅层地热能;规划评价;江苏海门
基金项目(Foundation): 江苏省自然资源发展专项资金(2020-20-14)
作者(Author): 周宇坤,骆祖江,郭华
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