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1. Modification of an auto-rickshaw for drag reduction using numerical simulation.

Author

Abbey, Saransh, Singh, Neha, Singh, Pratyush Kumar, Thiagarajan, Kannan Budda, Sasipraba, T, Subramaniam, Prakash, Jayaprabakar, J, Joy, Nivin, Anish, M, Ganesan, S, and Kavitha, K R

Subjects
*DRAG coefficient, *ENERGY consumption, *COMPUTER simulation, *AERODYNAMICS, *DRAG force, *USED cars, *DRAG reduction, DEVELOPING countries
Abstract

Design optimization of the vehicle has been an integral part of Vehicle Aerodynamics. The reason so much heed is given to this research area is due to the ever-growing concern of detrimental effects of fuel on the environment. This paper aims to optimize the shape of auto-rickshaw which is one of the most widely used vehicles in India. Being the developing nation, people use auto-rickshaw because it is economical which makes it essential to modify the design to reduce drag. This, in turn, improves the fuel efficiency of the auto-rickshaw. The impact of the addition of diffuser at the underbody along with varying slant angle at the rear side to provide boot area is studied. The modifications are done on CATIA V5 followed by investigating the coefficient of drag on ANSYS Fluent. [ABSTRACT FROM AUTHOR]

Published
2020
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2. Optimization of cooling load for a lecture theatre in a composite climate in India

Author

Kulkarni, K., Sahoo, P.K., and Mishra, M.

Subjects
*COOLING, *CLIMATE change, *COST analysis, *CARBON credits, *RETROFITTING, *COMPUTER simulation, *ENERGY consumption
Abstract

Abstract: A lecture theatre with dimension 16m×8.4m×3.6m located at Roorkee (28.58°N, 77.20°E) in the northern region of India, is selected to calculate the monthly and annual cooling load (kWh) and cooling capacity of air conditioning system by a computer simulation. The paper also presents the results of a study investigating the effect of different glazing systems on windows and the reduction in building cooling load. DesignBuilder software has been used for the computer simulation for calculating the cooling load. The paper aims to investigate the reduction in thermal gains and cooling load requirements by varying the U-values of different glazing types, insulating the ceiling, providing cool roofs, interior and exterior insulation on walls, and replacing the conventional fluorescent tube lamp (FTL) by energy efficient compact fluorescent lamp (CFL). Installation of false ceiling, wall insulation, different glazing types and lighting systems are cost effective with normalized annual saving ranging from 17% to 19.8% from this retrofitting project. Furthermore, the study also highlights the potential of reducing the emission of CO2 and equivalent carbon credit. Retrofitting techniques strongly influence the level of energy saving, although the payback period is generally quite long of order 8years. [Copyright &y& Elsevier]

Published
2011
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