%0 Conference Paper
%A Akhtar, S.
%A Khan, M.N.
%A Kurnia, J.C.
%A Shamim, T.
%D 2015
%F scholars:6223
%I Elsevier Ltd
%K Conversion efficiency; Energy conversion; Energy efficiency; Heat flux; Heat transfer; Numerical models; Turbulence models, curvature; Micropower generation; Photovoltaics; Reynolds; Wall temperatures, Combustors
%P 3060-3065
%R 10.1016/j.egypro.2015.07.626
%T Numerical Investigation of H2-air Premixed Combustion in a Curved Micro-combustor for Thermo-photovoltaic (TPV) Applications
%U https://khub.utp.edu.my/scholars/6223/
%V 75
%X Energy conversion efficiency of a thermo photo voltaic (TPV) system strongly depends on the wall temperature and its uniformity. Therefore, improving heat transfer characteristics of these systems is a focus of many recent studies. Significant efforts have been devoted to investigate flame stabilization and heat transfer enhancement for straight channels; planar and circular. However, the investigation of the impact of curvature on heat transfer and flow characteristics of a reacting flow is limited, implying that more studies are required. This study explores the effect of curvature on heat transfer, pressure drop and emission levels for a circular micro-combustor with sudden expansion (backward facing step). The study uses steady state Reynolds Average Numerical Simulation (RANS) turbulence model along with a finite rate chemistry model to numerically investigate the flame structure inside a micro-combustor. The investigation observes significant enhancement in outer wall temperature and heat flux for curved ducts as compared to those for straight channels. © 2015 The Authors. Published by Elsevier Ltd.
%Z cited By 7; Conference of 7th International Conference on Applied Energy, ICAE 2015 ; Conference Date: 28 March 2015 Through 31 March 2015; Conference Code:114863