THERMAL COMFORT ANALYSIS OF WORKING SPACE BUILDING USING OVERALL THERMAL TRANSFER VALUE (OTTV)

Abstract

Thermal comfort is a fundamental consideration in architectural design, ensuring the comfort and well-being of building users. We focus on proposing design recommendations on architectural elements as a solution to the Wohng Coffee building design problem, which has an OTTV value above the SNI standard. The parameters considered in the OTTV calculation include the dimensions and materials of the facade, openings, and shadings. This research aims to evaluate the thermal comfort levels within the Wohng Coffee and provide recommendations. The methodology consists of three phases: first, conducting direct observations and measurements of the study object, applying the OTTV method for thermal analysis, and conducting simulation with OTTV calculation for the proposed design alternatives to reduce the OTTV score. The results of OTTV calculations on existing buildings show numbers below the SNI standard for OTTV thermal comfort in Indonesia, which is 39.7 Watts/m2. Three alternative solutions were proposed to reduce the OTTV value: using aerogel glazing in openings, changing the shape of horizontal shading to vertical for more effectiveness, and combining the two alternatives. After calculating, the third alternative produces a lower OTTV value and complies with the standard, which is 31.9 Watts/m2.