Novel Approach to Improve Stack Effect in High Rise Buildings

C. P. Karthikeyan, Kevin Jones, Helen Santhi

Abstract


This paper aims at improving stack effect in high rise buildings using an innovative approach. Parameters influencing stack effect in high rise buildings are identified based on standard theory and practice. A new draft number for estimating stack effect in high rise buildings is derived using Buckingham-П theorem. Airflow data of a university high rise building is considered in estimating stack effect. The draft number developed is enclosed in ANSYS Fluent for estimating stack effect in buildings. A 15 storey hostel block of the university is taken into consideration for the study. Simple experiments and equations from Chapter 16 of the 2009 ASHRAE Handbook of Fundamentals are used for validating the draft number formulation. The case considered in this study, had a narrow space in the interior of the building on account of which sun rays could not heat the air inside the building. For most time of the day, the air remained at a very low temperature reducing the upward movement of air due to natural draft. The air movement was found to be influenced by wind flow direction and angle with respect to the building

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References


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DOI: https://doi.org/10.37628/jsea.v1i1.14

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