Design and performance of a constant temperature and humidity air-conditioning system driven by a ground source heat pump in summer

作者：Yu, X^*; Zhai, X Q; Wang, R Z

来源：Journal of Thermal Science and Engineering Applications, 2010, 2(1).

DOI：10.1115/1.4002300

• Air-handling unit
• Coefficient of Performance
• Constant temperature
• Heat extraction
• Heat pumps
• Indoor temperature
• Performance analysis

A constant temperature and humidity air-conditioning system driven by a ground source heat pump was designed and constructed in an archives building in Shanghai. The system consists of a water-to-water heat pump and 280 boreholes with 80 m in depth. During the operation in summer, the heat extraction from the condenser of the heat pump was divided: Part was rejected to the soil, while another was used to reheat the air in air handling units (AHUs). According to the experimental results under a typical summer weather condition of Shanghai, the average coefficient of performance of the heat pump was 5.4. The average indoor temperature and relative humidity of the archives house were 22.8°C and 46.6%, respectively. Since part of the heat extraction from the condenser was used to reheat the air in AHUs, the heat rejected to the soil was reduced by 23%, which was helpful for the earth energy conservation. According to the theoretical analysis, the distance between two boreholes is suggested to be 4-5 m. The deepness of the boreholes is suggested to be 80-100 m in Shanghai.

• 出版日期2010
• 单位上海交通大学