THERMAL COMFORT ANALYSIS OF BUILDINGS IN STONE TOWN AND NG’AMBO, ZANZIBAR

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"Abstract"
"Abstract"
"Zanzibar Island poses two conflicting modes of construction; the heavyweight construction that is predomi-"
"nant in the Stone Town and lightweight construction in the newer buildings Ng'ambo. Debate on warm hu- mid climate design has been going on for a while now with most factions advocating for lightweight con- struction over the heavyweight construction. This study was undertaken to establish which of the two kinds of built forms was best suited for Zanzibar in terms of user thermal comfort and further give recommenda-"
"tions for further development in island."
"Literature review confirms the existence of  both modes of construction in Zanzibar and further identifies"
"the building typologies in both Stone Town and Ng'ambo. Using the case study strategy and purposive sam- pling, the author studies the urban morphology, the street character and selected case study buildings in both Stone Town and Ng'ambo. For more clarity on the subject of thermal comfort, scientific data logging was done for the case study buildings. From the comparative studies undertaken, its was clear that indeed the buildings in Stone Town had a better thermal performance than the newer buildings of Ng'ambo. This is found evidence that validates the heavyweight construction for Zanzibar in terms of user thermal comfort. Concluding from that, three key approaches for achieving human thermal comfort in cooling applications are thus recommended: passive design to minimise heat gains, adaptive living  and natural dehumidification"
"to minimise the ever high humidity levels experienced in Zanzibar."

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