Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of thermal comfort conditions in a classroom with three ventilation methods
Abstract Thermal sensation is studied experimentally under mixing ventilation, displacement ventilation, and stratum ventilation in an environmental chamber. Forty‐eight subjects participated in all tests under the same boundary conditions but different ventilation methods in the classroom. Thermal comfort analysis was carried out according to the designated supply airflow rate, room temperature, and relative humidity for the three ventilation methods. The thermal neutral temperature under stratum ventilation is approximately 2.5°C higher than that under mixing ventilation and 2.0°C higher than that under displacement ventilation. This result indicates that stratum ventilation could provide satisfactory thermal comfort level to rooms of temperature up to 27°C. The energy saving attributable to less ventilation load alone is around 12% compared with mixing ventilation and 9% compared with displacement ventilation. The confirmation of the significantly elevated thermal neutral temperature can have a number of implications for both thermal comfort in an air‐conditioned room and energy consumption of the associate air‐conditioning system. With respect to the former, it provides scientific basis for the feasibility of elevated room temperatures, and with respect to the latter, it reveals considerable potentials for energy saving.
Evaluation of thermal comfort conditions in a classroom with three ventilation methods
Abstract Thermal sensation is studied experimentally under mixing ventilation, displacement ventilation, and stratum ventilation in an environmental chamber. Forty‐eight subjects participated in all tests under the same boundary conditions but different ventilation methods in the classroom. Thermal comfort analysis was carried out according to the designated supply airflow rate, room temperature, and relative humidity for the three ventilation methods. The thermal neutral temperature under stratum ventilation is approximately 2.5°C higher than that under mixing ventilation and 2.0°C higher than that under displacement ventilation. This result indicates that stratum ventilation could provide satisfactory thermal comfort level to rooms of temperature up to 27°C. The energy saving attributable to less ventilation load alone is around 12% compared with mixing ventilation and 9% compared with displacement ventilation. The confirmation of the significantly elevated thermal neutral temperature can have a number of implications for both thermal comfort in an air‐conditioned room and energy consumption of the associate air‐conditioning system. With respect to the former, it provides scientific basis for the feasibility of elevated room temperatures, and with respect to the latter, it reveals considerable potentials for energy saving.
Evaluation of thermal comfort conditions in a classroom with three ventilation methods
Fong, M. L. (Autor:in) / Lin, Z. (Autor:in) / Fong, K. F. (Autor:in) / Chow, T. T. (Autor:in) / Yao, T. (Autor:in)
Indoor Air ; 21 ; 231-239
01.06.2011
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Evaluation of thermal comfort conditions in a classroom with three ventilation methods
| Online Contents | 2011
Ventilation rates and thermal comfort assessment in a naturally ventilated classroom
| BASE | 2016
Natural ventilation : thermal comfort
| British Library Conference Proceedings | 1994
| Engineering Index Backfile | 1919