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Waste Heat Recovery System for a Heavy Duty Six Cylinder Engine

Bhat, Chandrashekhar and Sharma , S S and Jagannath, K and Kini, Achutha U and Pandey, Sunil Kumar and Saravana, Venkatesh and Kumar, Praveen K S (2014) Waste Heat Recovery System for a Heavy Duty Six Cylinder Engine. In: 3rd World Conference on Applied Science, Engineering and Technology, 27-29 September 2014, Kathmandu, Nepal.

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Abstract

Organic Rankine cycle (ORC) is seen as an economical and environmental friendly technique to waste heat recovery (WHR) from the exhaust gases. A mathematical model of the ORC system is developed in MATLAB Simulink and is then coupled to the engine model in AVL boost which simulates the working of the engine and the ORC and leads to the computation of BSFC. Using the Simulation results, the influence of working fluid flow rates, the engine speed and the injection timing are studied. The simulation results show an improvement in brake specific fuel consumption (BSFC) to an extent of 4.5% (equivalent to 11 kW ORC power) when the working fluid flow rate is 0.65 kg/sec and at a lower working range of 1900 to 2200 engine speeds in RPM. When the working fluid flow rate is 0.4 kg/sec a 3% improvement in BSFC is observed at a greater working speed. For the ORC model to work for a higher range of engine speeds from 1300 to 2200 RPM, the working fluid flow rate of 0.4 kg/sec is taken to be the optimised value thereby improving the BSFC by 3%.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Organic, Cycle, Design, Heat, Simulation.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 08 Oct 2014 07:05
Last Modified: 08 Oct 2014 07:05
URI: http://eprints.manipal.edu/id/eprint/140790

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