Title : OPTIMIZATION OF WINDOW GLAZING PROPERTIES FOR INDOOR THERMAL COMFORT IN CHENNAI CLIMATE
Authors : Deepa Rani, R. and A. Ramachandraiah
Publication : February 13-16, 2013
Volume :
Pages : 11-Jan
Price : 250
Abstract : In built environments human thermal comfort is achieved by maintaining a heat balance between the human body and the environment (wall and roof surfaces) by radiative and convective heat transfer. Glazing systems have distinctly different thermal and optical properties from the walls, which severely affect the human thermal comfort in a room. Window surface temperatures often fluctuate much more than those of other surfaces in a room and occupants experience discomfort as a result of radiant heat exchange with window surfaces. Thus window fenestration and its design have a significant role on the energy use associated with cooling of a building in warm climates. This paper describes an approach in which an optimization tool has been developed to optimize the properties of windows to achieve an acceptable level of Thermal comfort inside a room. The tool is developed on the basis of Fanger?s model of Thermal comfort which is purely based on personal and environmental parameters that include metabolism, clothing, air temperature, radiant temperature, air velocity and relative humidity. The parametric study include simulations using the tool developed to predict the changes in thermal comfort levels in a space due to different glazing types, glazing orientation and glazing areas, which are the key parameters of the building envelope.