%K Biofuels; Chemical reactors; Heat transfer; Heat transfer coefficients, Endothermic reactions; Model equations; Packed bed reactor; Wall heat transfer; Wall heat transfer coefficients, Packed beds %X Information on wall heat transfer to packed bed reactors operating with exothermic or endothermic reactions is scarce. Overall wall heat transfer coefficients in a packed bed reactor in presence of an endothermic reaction are measured and observed to be smaller than the expected in the absence of reaction. This observation is in contrast with the reported observations with exothermic reactions in packed beds. A model equation based on energy balance is presented to explain the observations. © 2014 Trans Tech Publications, Switzerland. %J Applied Mechanics and Materials %L scholars4685 %O cited By 3; Conference of 3rd International Conference on Process Engineering and Advanced Materials, ICPEAM 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:114811 %R 10.4028/www.scientific.net/AMM.625.722 %D 2014 %I Trans Tech Publications Ltd %V 625 %A D. Subbarao %A R.H. Abd Elghafoor Hassan %A M. Ramasamy %T Heat transfer with chemical reaction in wall heated packed bed reactor %P 722-725