Title: Heat management in a campus cafeteria with optimal insulation thickness for thermal comfort of a space-variant manikin

Authors: Idris B. Seidu; Emmanuel O.B. Ogedengbe; Marc A. Rosen

Addresses: Energhx Research Group, 353 Faculty of Engineering, Department of Mechanical Engineering, University of Lagos, Akoka-Yaba, Lagos, 101017, Nigeria ' Energhx Research Group, 353 Faculty of Engineering, Department of Mechanical Engineering, University of Lagos, Akoka-Yaba, Lagos, 101017, Nigeria ' Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario, L1H 7K4, Canada

Abstract: Thermal comfort modelling of a university cafeteria, represented by the space occupied by a manikin, is developed using a two-dimensional finite volume formulation. An energy audit assessment including performance data collected from both vendors and customers of the facility is performed. Environmental and physiological data are gathered and simulated using computational fluid dynamics (CFD) to obtain realistic solutions of the energy performance and thermal comfort, and the results are validated with thermal sensation models. The thermal sensation of the occupants within an asymmetrical environment like the 2001 campus cafeteria is validated with Fanger's model, using the temperature distribution predicted with CFD. A Newton-Raphson method permits optimisation of the insulation thickness, which is capable of altering the asymmetric variation of the indoor environment and the possible attainment of energy savings through optimal building materials.

Keywords: thermal comfort modelling; insulation thickness; Newton-Raphson method; predicted mean vote; PMV; percentage people dissatisfied; PPD; heat management; campus cafeterias; space-variant manikins; finite volume method; university cafeterias; energy audit; simulation; computational fluid dynamics; CFD; temperature distribution; energy savings.

DOI: 10.1504/IJPSE.2015.071432

International Journal of Process Systems Engineering, 2015 Vol.3 No.1/2/3, pp.126 - 148

Received: 26 Aug 2014
Accepted: 03 Mar 2015
Published online: 27 Aug 2015 *

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