Study of control strategy using outdoor air to reduce winter indoor humidity in Taiwanese apartments -- demonstrated by ventilation design for a bathroom
- Chung-Hua Polytechnic Inst., Hsin-chu (Taiwan, Province of China). Dept. of Architecture and Urban Planning
- National Cheng Kung Univ., Tainan (Taiwan, Province of China). Dept. of Architecture
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Architecture
Dampness in residential buildings is detrimental to the health of the occupants and causes the growth of mold and decay in the fabric of the building materials. In Taiwan the average winter relative humidity is 80% and the average temperature is 15 C (59 F). It has been found that the average winter indoor moisture content in Taiwanese apartments can be higher than the outdoor content by as much as 15%. Although the main cause for the increased indoor humidity levels has not been identified, removing the moisture generated from shower baths can help reduce the humidity. This study focuses on a typical Taiwanese bathroom without windows and exhaust vents. Through an overall airflow design pattern and the utilization of the thermal buoyancy effect, the moisture generated during showers was effectively removed with less outdoor air for maintaining indoor thermal comfort. As guidelines for the design, the appropriate window and transom locations with the corresponding outdoor air supply volume, as well as the lowest possible outdoor air temperature, were identified by several computational fluid dynamics simulations.
- OSTI ID:
- 349954
- Report Number(s):
- CONF-970668-; TRN: IM9925%%105
- Resource Relation:
- Conference: American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) annual meeting, Boston, MA (United States), 28 Jun - 2 Jul 1997; Other Information: PBD: 1997; Related Information: Is Part Of ASHRAE transactions: Technical and symposium papers, 1997. Volume 103, Part 2; PB: 1072 p.
- Country of Publication:
- United States
- Language:
- English
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