Early Modern Apartment Facades in Kuala Lumpur: Overall Thermal Transfer Value
Ahmad Sanusi Hassan1*, Muhammad Hafeez Abdul Nasir2
- School of Housing, Building & Planning, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
Published in The Second NZAAR International Event Series on Natural and Built Environment, Cities, Sustainability and Advanced Engineering, Kuala Lumpur, Malaysia, 8 December 2016, pages 63 to 73. New Zealand Academy of Applied Research. ISSN 2463-5979 (online), 2463-5960 (print).
Abstract
The study dissects the impact of shading on the Overall Thermal Transfer Value (OTTV) through residential building facade with specific reference to the Early Modern apartment facade in Kuala Lumpur. Characterized by its modest mass-produced appearance to cater the low-income groups, special attention is given to the design of the extended open corridor system which becomes the pinnacle of solar shading manipulation on the apartment facade. The selected case study is the Melati Apartment, one of the earliest flats built in Kuala Lumpur, located off the Loke Yew Street. The amount of shading area (%) of the apartment façade is initially simulated and systematically recorded over the course of a day (8 am to 7 pm). While the study records variations in the shading areas alongside time in response to of the length, width and height of the fenestrations and the open corridor system, other parameters like façade orientation, temperature difference, U-values, absorptive factor, and shading coefficient remained empirically similar throughout the study. The procedure proceeds with the calculation of the OTTV which is meticulously undertaken under two different facade conditions which are the fully-exposed and the shaded façades. The study utilizes the subtraction method where the OTTV of the shaded facade is subtracted from the OTTV of the fully-exposed façade in search for OTTV reduction. The result reveals the time period from 11 am to 3pm culminates the highest shading area provided by the corridor, consequently resulting in the lowest OTTV of the residential façade. Conversely, it emerges that in the early morning (8am to 10 am) and late evening (5pm to 7pm) the OTTV of each facade reaches its highest point during the day due to less shading percentages during these hours. Further analysis unveils the open corridor system’s capability to reduce nearly 50% of the average OTTV of the fully exposed façade through shading.
Keywords: High rise Apartments; Early Modern; OTTV; Kuala Lumpur
Rights
Copyright © New Zealand Academy of Applied Research Ltd 2016. All rights reserved. Reproduced in the GDI Academy archive from the original proceedings without change to the authors’ text.