The comparative study of the using vertical shading device to save energy by OTTV simulating program : Case study of Faculty of Science and Technology Building, Rajamangala University of Technology Rattanakosin

Abstract

The purpose of this research is to compare for the using vertical shading device with exterior walls for energy saving in buildings by estimation of Overall Thermal Transfer Value (OTTV) : Case study of Faculty of Science and Technology building, Rajamangala University of Technology Rattanakosin, Salaya. The study of Overall Thermal Transfer Value (OTTV) using Microsoft Office Excel calculation program by use the equation to calculate OTTV. And using the SketchUp plugin Calculate SC program to calculate Shading Coefficient (SC) to comparing the west external wall that is fitted with a shading device and not installing the shading device. The results showed that the installation of vertical shading device in the west wall effect to Overall Thermal Transfer Value (OTTV) that covers both solid walls and translucent walls when compared to the wall, it does not install the shading device. Wall install the shading device reduce Overall Thermal Transfer Value which helps reduce the air conditioning load in the building which effect to energy saving in the building effectively, so causes long-term cost-effectiveness.