Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment of natural ventilation within buildings located on hottemperate and mild-temperate regions ; Integrated Solution in an Office Room with Diffuse Ceiling Ventilation and Thermally Activated Building Constructions
This work presents an energy assessment of the natural ventilation performance within buildings located on both hot-temperate and mild-temperate conditions such as the existing along the central region of Mexico. With the assistance of a coupled thermalairflow simulation program, simulations are run without and with natural ventilation, respectively. Thereby, the consumption of air-conditioning presented in this region is validated with data from literature when natural ventilation is not applied. Results show that when natural ventilation is used thermal comfort is achieved more than 90% of the assessed time. Therefore, the cooling demand supplied by air-conditioning could be virtually avoided, especially when the building has high thermal capacity, feature presented on a great part of the building stock. ; An integrated system is proposed in this study to combine diffuse ceiling ventilation with a thermally activated building construction (TABS), aiming to provide cooling/ heating and ventilation to an office room all year around. The performance of the integrated system is evaluated by full-scale experiments in a climate chamber. The experimental results indicate that diffuse ceiling can significantly improve thermal comfort in the occupied zone, by reducing draught risk and vertical temperature gradient. The linear function between pressure drop and air change rate points out that the air flow through diffuse ceiling is laminar. A thermal decay is found in the plenum air and the thermal performance of TABS may be influenced by water flow and air flow direction.
Assessment of natural ventilation within buildings located on hottemperate and mild-temperate regions ; Integrated Solution in an Office Room with Diffuse Ceiling Ventilation and Thermally Activated Building Constructions
This work presents an energy assessment of the natural ventilation performance within buildings located on both hot-temperate and mild-temperate conditions such as the existing along the central region of Mexico. With the assistance of a coupled thermalairflow simulation program, simulations are run without and with natural ventilation, respectively. Thereby, the consumption of air-conditioning presented in this region is validated with data from literature when natural ventilation is not applied. Results show that when natural ventilation is used thermal comfort is achieved more than 90% of the assessed time. Therefore, the cooling demand supplied by air-conditioning could be virtually avoided, especially when the building has high thermal capacity, feature presented on a great part of the building stock. ; An integrated system is proposed in this study to combine diffuse ceiling ventilation with a thermally activated building construction (TABS), aiming to provide cooling/ heating and ventilation to an office room all year around. The performance of the integrated system is evaluated by full-scale experiments in a climate chamber. The experimental results indicate that diffuse ceiling can significantly improve thermal comfort in the occupied zone, by reducing draught risk and vertical temperature gradient. The linear function between pressure drop and air change rate points out that the air flow through diffuse ceiling is laminar. A thermal decay is found in the plenum air and the thermal performance of TABS may be influenced by water flow and air flow direction.
Assessment of natural ventilation within buildings located on hottemperate and mild-temperate regions ; Integrated Solution in an Office Room with Diffuse Ceiling Ventilation and Thermally Activated Building Constructions
Zhang, Chen (Autor:in) / Heiselberg, Per Kvols (Autor:in) / Pomianowski, Michal Zbigniew (Autor:in) / Yu, Tao (Autor:in) / Jensen, Rasmus Lund (Autor:in)
01.01.2015
Zhang , C , Heiselberg , P K , Pomianowski , M Z , Yu , T & Jensen , R L 2015 , ' Integrated Solution in an Office Room with Diffuse Ceiling Ventilation and Thermally Activated Building Constructions ' , Energy Procedia , vol. 78 , pp. 2808-2813 . https://doi.org/10.1016/j.egypro.2015.11.635
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Field Study of Diffuse Ceiling Ventilation Performance in a Landscape Office
| BASE | 2016