Paper Title
STUDY ON THERMAL TRANSFER OF THE BUILDING ENVELOPE FOR OPTIMIZATION IN ENERGY-EFFICIENT STANDARD HOUSES IN THAILAND

Abstract
Energy efficiency in residential buildings is a critical aspect of sustainable development, particularly in tropical climates like Thailand.This study explores the optimization of building envelope design to align with Thailand's energy-efficient house standards. The BEC program, or Building Energy Code (this project uses a web-based version), is a program developed for building inspections in accordance with Thailand’s building energy conservation standards. This study focuses on evaluating a case study from a government-managed free design database by calculating OTTV and RTTV using the BEC program. The study shows that the case study has an OTTV value that meets the standard; however, the RTTV value remains significantly low. The improvement of roofing materials, such as the use of clay tile roofs, ceramic tile roofs, or cellular concrete slabs, is recommended to enhance the energy-efficient building standards. Additionally, the building orientation also affects the OTTV and RTTV values. The facade design on the southern side should be carefully considered to minimize thermal transfer values. The analysis from this study is expected to improve the quality of the design database for the public, adding guidelines for energy-efficient certified house designs. Keywords - Building envelope, energy efficiency, sustainable housing, Thailand.