Ph.D, M.Tech

Dr. Wg. Cdr. (Retd.) Sushil Kumar T. V. K. currently serves as Distinguished Faculty at the Department of Aerospace Engineering, School of Engineering, Coimbatore Campus. His areas of research include Embedded Systems, RF Design, Avionics and Tropical Architecture.


Publication Type: Journal Article

Year of Publication Title


Wg. Cdr. (Retd.) Sushil Kumar T. V. K., Chandrasekar, J., Moorthy, S. Kumar, Sakthikala, A., and Bharath, S. R. Arvind, “Optimization of Building Envelope to Reduce Air Conditioning”, Indian Journal of Science and Technology, vol. 9, no. 4, 2016.[Abstract]

Background/Objectives: Air conditioning in tropical buildings constitutes a major component towards the total energy consumption. General guidelines for reducing the incident solar radiation on the building envelope are available in literature. However information on the reduction in energy requirement is not readily available. Methods/Statistical Analysis: Reduction in energy requirement by varying the building planform, orientation and construction materials was studied. Findings: A building with a planform area close to the Golden Ratio and with the broader side facing North, resulted in the least amount of solar radiation on the surface of the building envelope. Further the white coloured buildings made of rammed walls and roof material with longer phase lag decrease the heat transfer into the buildings. Conclusion: The building orientation and planform are crucial in reducing the incident solar radiation on the building envelope surface. Use of white colour and materials like rammed earth for walls resulted in substantial reduction of the required cooling loads to maintain the indoor thermal comfort temperature. More »»


Wg. Cdr. (Retd.) Sushil Kumar T. V. K., Dr. Chandrasekhar J., Dr. Shriram K Vasudevan, and Balachandran, A., “An analysis of effect of wing walls on natural ventilation”, Indian Journal of Science and Technology, vol. 8, 2015.[Abstract]

Background/Objectives: The air flow inside a building due to natural ventilation consists of recirculation regions and a main flow between the inlet and outlet. Recirculation regions are characterized by low velocities resulting in thermal discomfort for the occupants. Winged walls are basically protrusions from external walls to improve the process of natural ventilation. Existing literature on wing walls is on main air flow pattern only. Methods/Statistical Analysis: In this paper, CFD was used to compare effectiveness of configurations suggested in the literature. Information was also obtained about the recirculation regions. Further conventional wing walls were modified and its effectiveness presented. Findings: Valuable information on recirculation regions can be accomplished through this innovation. Optimum dimension of wing walls to improve natural ventilation has also been achieved through the research. More than all these, the information obtained from this research can be used for designing energy efficient buildings.

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