摘要
我国北方冬季供暖能耗大,故如何应用高效清洁的可再生能源进行供暖亟待研究。北方地区太阳能和地热能资源丰富,若将太阳能和地热能利用技术耦合应用于建筑供暖,将降低供暖能耗。以西北地区某农户住宅用主动式太阳房为例,建立太阳能集热器—中深层地埋管地源热泵系统的TRNSYS仿真模型,分析2500 m埋深中深层地埋管地源热泵系统在主动式太阳房中的长期供热特性。研究得出,在运行5年的时间内,埋深2500 m的U型地埋管在半径方向2.4 m且深度方向1250 m处的岩土温度下降了6.21%;地埋管提取的地热量逐年减少;热泵机组COP值在第5年达4.96。每年采暖期内太阳房内的温度大于21℃,满足冬季太阳房采暖要求。研究成果可为北方地区太阳能和地热能耦合系统设计提供理论基础。
The energy consumption of heating in northern China is large in winter,so it is urgent to study how to use efficient and clean renewable energy for heating.North China is rich in solar and geothermal energy resources.If solar and geothermal energy utilization technologies are coupled and applied to building heating,heating energy consumption will be reduced.Taking the active solar residential house in Northwest area as an example,a TRNSYS simulation model of a solar collector coupling deep buried pipe ground source heat pump system was established.And the long-term heating characteristics of the 2500m deep buried pipe ground source heat pump system in the active solar house were analyzed.Research shows that,within five years of operation,the soil temperature at locations where radius of 2.4 m and depth of 2500 m has decreased by 6.21%;The amount of geothermal energy extracted by buried pipes has been decreasing year by year;The COP value of the medium-deep ground source heat pump unit reached 4.96 in the fifth year.The temperature inside the solar room during the annual heating period was greater than 21℃,which meeting the heating requirements for winter solar rooms.The research results provided a theoretical basis for the selection of solar energy coupling geothermal energy system in the North area.
作者
白梦梦
王沣浩
康彦青
BAI Mengmeng;WANG Fenghao;KANG Yanqing(City College,Xi’an Jiaotong University,Xi’an 710049,China;School of Human Settlements and Civil Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《建筑节能(中英文)》
2025年第10期31-36,共6页
Building Energy Efficiency
基金
2023校级潜力培育项目:地源热泵系统在主被动结合式太阳房中的节能调控研究(2023PY06)。
关键词
主动式太阳房
中深层地源热泵
岩土温度
地埋管出口水温
太阳房温度
active solar house
medium-deep ground source heat pump
soil temperature
outlet water temperature of buried pipe
solar room temperature
