Thermal comfort analysis of buildings with emphasis on roof types

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Energy consumption in India buildings is expected to increase substantially due to economic growth, rapid growth in the construction sector and improvement in the living standard of the people. the demand for energy to operate the applications such as televisions, air conditioning and heating units, refrigerators, fans, etc. will increase substantially as the living standard rise in India. Also growth in commercial sector and the shift from rural to urban living will continue to take place. This will also result in a substantial increase in energy demand from the building sector alone. Therefore concerted efforts need to be taken for bring down the energy consumption by building through various measures. Reducing operating energy significantly through use of passive and active technologies even if it leads to a slight increase in embodied energy can reduce life cycle energy demand for building. However, an excessive use of passive and active features in a building may be counter-productive. To implement the energy efficient technologies in existing buildings. one has to know about its thermal comfort conditions. It shows the need for thermal comfort studies to understand the comfort levels in existing buildings. Judicial use of passive techniques for providing thermal comfort to residents demands the need of thermal comfort standards. Thermal comfort standards in naturally ventilated buildings depend on several factors like, psychological, physiological and adaptive nature of residents. Further it also depends on the climatic zone in which building is located. Kozhikode district of Kerala, in warm-humid climatic zone was considered for conducting detailed thermal comfort analysis of existing buildings. Three types of building were selected namely Asbestos cement roofed (ACR) house, Reinforced cement concrete(RCC) roofed house and Traditional mud tile (TMT) roofed house for quantitative analysis. Dwellings considered for the study were hostel rooms in National Institute of Technology (NIT) Calicut. To understand the effect of roofing on thermal performance of dwellings, study was carried out on rooms. which are similar in all construction features except roofing
Supervisor : P. Muthukumar