• 能源和环境工程 •

### 土壤源热泵供暖间歇运行时间的计算分析

1. 河北科技大学建筑工程学院，河北 石家庄 050018
• 收稿日期:2019-10-07 修回日期:2019-11-14 出版日期:2020-04-25 发布日期:2020-05-22
• 通讯作者: 王刚 E-mail:wanggang978@163.com
• 作者简介:王刚（1978—），男，硕士，讲师，wanggang978@163.com
• 基金资助:
河北省自然科学基金面上项目(E2019208191)

### Calculation and analysis of soil source heat pumps intermittent heating operation time

Gang WANG(),Yan ZHAO

1. College of Architecture Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China
• Received:2019-10-07 Revised:2019-11-14 Online:2020-04-25 Published:2020-05-22
• Contact: Gang WANG E-mail:wanggang978@163.com

Abstract:

In order to make full use of soil heat energy, the relationship between heat supply, running time and system performance was studied. By establishing the hourly heat balance equation of the room, the calculating formula on room temperature change and time was derived. The average indoor temperature, heat pump running time, downtime, and heating running share were calculated by this model, and the simulation calculation and analysis of five operating schemes were carried out.

Conclusion

in the calculation of underground coil length design, the heating running share should be calculated based on the heat pump unit s heat supply. When heat pump heat production is same, the time period (the sum of one running time and downtime) is small, the running time is short, the average water temperature of the underground coil outlet is high, and the heat pump operation efficiency is high, but as the time period becomes smaller, the average indoor temperature decreases, thermal comfort decreases. When the time period is the same, the heat pump unit s heat supply is bigger and the running time is shorter, the average water temperature of the underground coil outlet is higher, and the heat pump unit s efficient is higher. According to these characteristics, the heat source can be allocated in the form of an heat pump unit with a 100% heat load + an auxiliary heat source with 20%－30% heat load.

• TU 831.1
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