A study on thermal environment performance in atria in the tropics with special reference to Malaysia

Abdullah, Abd Halid (2007) A study on thermal environment performance in atria in the tropics with special reference to Malaysia. PhD thesis, Heriot-Watt University.

[img]PDF
1287Kb

Abstract

This research investigated the thermal environmental performance of atria in the tropics. with special reference to Malaysia. The main design problems that affect the thermal and energy performance in existing Malaysian atria are overlighting and overheating due to the direct application of western top-lit atrium roof form. As such. this research proposed the side-lit atrium form which aimed at controlling direct sunlight as a way to improve thermal and energy performance of atria in the tropics. Based on the proposed conceptual atrium form, this research examined quantitatively some of the low energy design features and ventilation strategies that can possibly contribute to a better indoor thermal environmental perfonnance of atria in the tropics. The ultimate aim of this research is to propose design principles and guidelines for new low-energy atria in the tropics. The combined research methods are as follows: developing a conceptual low energy atrium form based on the vernacular design features to be used for computer modelling studies; calTying out field measurement and monitoring on an existing atrium building which provides validation data for dynamic thermal simulation program TAS: modelling exercise on the same monitored building using dynamic thermal modelling to develop confidence in cOlTectly modelling thermal stratification within the multi-level atrium: employing dynamic thermal modelling to model representative atrium forms (i.e. both side-lit and top-lit model) and examine quantitatively the effects of some of the key design parameters (i.e. wall-to-roof void area, roof overhangs, and internal solar blinds) on the thermal comfort and energy performance in atria due to both full natural ventilation and pressurised ventilation; and utilising computational Ouid dynamics (CFD) to complement the dynamic thermal simulation results, and to investigate quantitatively the thermal and ventilation performance within the atrium well in response to the changes of design parameters (i.e. varying the inlet to outlet opening area ratio and outlet" s alTangement). The research findings supported the research proposition and demonstrated the effectiveness of the side-lit form as a way to improve the thermal and energy performance with regard to users' thermal comfort in atria in the tropics

Item Type:Thesis (PhD)
Subjects:T Technology > TH Building construction > TH7005-7699 Heating and ventilation. Air conditioning
ID Code:1270
Deposited By:M.Iqbal Zainal A
Deposited On:20 Apr 2011 12:22
Last Modified:29 Apr 2011 14:43

Repository Staff Only: item control page