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暖通空调杂志社>期刊目次>2017年>第12期

地埋管地源热泵系统运行能耗分析

Operation energy consumption of ground-source heat pump systems

徐卫荣 夏卓平 邱建中 陈 震
江苏省建筑设计研究院有限公司

摘要:

建立了地埋管地源热泵系统运行的数学模型,以某综合楼为例,分析了空调水温、地埋管长度、土壤初始温度、土壤导热系数对系统运行能耗的影响,以及地埋管运行对土壤温度的影响。结果表明:空调冷水温度每提高1 ℃,制冷耗电量约减小3.5%;空调热水温度每提高1 ℃,供热耗电量约增加2.3%;地埋管长度每增加10%,制冷耗电量约减小0.43%,供热耗电量约减小0.56%;土壤初始温度每提高1 ℃,制冷耗电量约增加1.9%,供热耗电量约减小2.4%;土壤导热系数每增加0.1 W/(m·K),制冷耗电量约减小0.22%,供热耗电量约减小0.20%。

关键词:地埋管地源热泵,运行能耗,空调水温,地埋管长度,土壤温度,导热系数,耗电量

Abstract:

Establishes a mathematical model for ground-source heat pump systems. Taking a complex building as the example, analyses the influences of air conditioning water temperature, length of buried pipes, initial soil temperature and soil thermal conductivity on the operation energy consumption, and the influence of buried pipe operation on the soil temperature. The results show that increasing 1 of the chilled water temperature could reduce about 3.5% of the cooling electricity consumption. Increasing 1 of the hot water temperature could increase about 2.3% of the heating electricity consumption. Increasing 10% of the length of buried pipes could reduce about 0.43% of the cooling electricity consumption and 0.56% of the heating electricity consumption. Increasing 1 of the initial soil temperature could increase about 1.9% of the cooling electricity consumption and reduce about 2.4% of the heating electricity consumption. Increasing 0.1 W/(m·K) of the soil thermal conductivity could reduce about 0.22% of the cooling electricity consumption and 0.20% of the heating electricity consumption.

Keywords:ground-sourceheatpump,operationenergyconsumption,airconditioningwatertemperature,lengthofburiedpipe,soiltemperature,thermalconductivity,electricityconsumption

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