Understanding Overall Thermal Transfer Value as a Building Energy Efficiency Indicator

DOI: 10.5176/2425-0112_UPPD15.14

Authors: Ayegbusi Olutobi Gbenga, Dr. Abdullah Sani Ahmad, Dr. Lim Yaik Wah and Dr. Dilshan Remaz Ossen

Abstract:Due to the global concern on the prevailing effect of climate change on the environment, professionals and stakeholders in building industry in various countries have been considering different possibilities to reduce to barest minimum level the energy end-use in buildings by developing different building envelope configurations as well as different energy evaluation codes and standards. As one of the many paths towards achieving this goal, Malaysia building regulatory body has introduced the concept of overall thermal transfer value (OTTV) standard to evaluate the thermal performance of building envelope with an air conditioning system more than two decades ago. Ensuring a more efficient building energy codes or standard in any local context, a consistent and progressive review is necessary as more knowledge is added to the existing pool. Hence, this study is concluded by highlighting the state of art of OTTV formulation in building industry so as to improve its efficiency.

Keywords: building energy standard; overall thermal transfer value; energy efficiency.