Performance investigation of a hybrid ground-assisted desiccant cooling system
Journal
Energy Conversion and Management
Journal Volume
265
Date Issued
2022
Author(s)
Abstract
This study proposes a novel hybrid ground-assisted desiccant cooling (HGDC) system that integrates a heat pump and shallow geothermal energy. This HGDC system can be used as an efficient alternative for handling the ventilation load in the subtropical monsoon climate. Under the outdoor air conditions of 33.3℃ and 24.9 g kg−1, the system could provide supply air conditions of 23.8℃ and 13.8 g kg−1, and the total coefficient of performance was 4.10. The energy analysis showed that precooling air by shallow geothermal groundwater is helpful for dehumidification, and it accounted for 33–73% of the total cooling capacity. Moreover, this HGDC system also built the control strategy based on outdoor conditions, which contains free ventilation, cooling and desiccant cooling modes. Compared to the conventional vapor compression system, this HGDC system can save 7.7–31.7% on total power consumption of summer period. © 2022 Elsevier Ltd
Subjects
Desiccant cooling system; Energy saving; Shallow geothermal energy; Subtropical monsoon climate
SDGs
Other Subjects
Atmospheric thermodynamics; Cooling; Cooling systems; Driers (materials); Geothermal energy; Groundwater; Humidity control; Thermoelectric equipment; Tropics; Coefficient of Performance; Condition; Desiccant cooling systems; Energy savings; Energy-savings; Heat pumps; Outdoor air; Performance; Shallow geothermal energies; Subtropical monsoon climate; Energy conservation
Type
journal article