Abstract
Indoor humidity behaviors with a system combining chilled-ceiling and desiccant cooling (CC+DC) in hot and humid climates are investigated and compared with a conventional constant volume all-air system (CAV). Room mean temperature, mean humidity, maximum RH on the ceiling panel surfaces, annual condensation hours are predicted using a building energy simulation code ACCURACY and a moisture balance analysis method in an office room under Hong Kong weather conditions. The results show that the system controls the indoor humidity poorly in transient seasons, but in comparison, the CC+DC system provides better indoor humidity environment most of the year. For CC+DC, air dehumidification and ventilation system should be operated at least one hour earlier than the operation of ceiling panels. Otherwise, condensation may occur.
Original language | English |
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Pages | 301-306 |
Number of pages | 6 |
Publication status | Published - 2002 |
Event | International Conference on Indoor Air Quality and Climate [Indoor Air] - Duration: 1 Jan 2002 → … |
Conference
Conference | International Conference on Indoor Air Quality and Climate [Indoor Air] |
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Period | 1/01/02 → … |
Keywords
- Radiant cooling
- Humidity
- Desiccant cooling
- Condensation