A comparative analysis to enhance the effectiveness of EGR coolers used in diesel engine

  Ibrahim Hussain Shah,  Bhupendra Singh

The Exhaust gas re-circulation is the effective method to reduce the emitted NOx from diesel engine. The exhaust system reduces the combustion temperature, because of this formation of NOx is reduced. Commercial computational fluid dynamics (CFD) code is used to solve and simulate the flow-fields and temperature distribution of fluids inside the EGR cooler. Three models of EGR coolers have been developed using Pro/engineer software. Model - a is a single pass shell and tube type heat exchanger with plain tubes having cylindrical shaped fixed head. Model-b is similar to the model-a except tubes because in model-b plain tubes were replaced with circular internally finned tubes to increase the surface area of tubes. In Model – c rectangular fins are used for analysis. In model-a, model-b and model - c the inlet conditions of both fluids kept constant for the analysis of effectiveness and exhaust temperature. Both analytical result and CFD result show that heat transfer between exhaust gas and coolant is increased for finned tubes. In three models rectangular fin tube model is more effective compared to other two models because surface area for heat transfer is more in rectangular fin tube model.

Keywords- Exhaust gas re-circulation (EGR) cooler, Effectiveness, Computational Fluid Dynamics (CFD), Finned tubes.

Unique Identification Number - IJEDR1502238
Page Number(s) - 1459-1466
Pubished in - Volume 3 | Issue 2 | May 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Ibrahim Hussain Shah,  Bhupendra Singh,   "A comparative analysis to enhance the effectiveness of EGR coolers used in diesel engine", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 2, pp.1459-1466, May 2015, Available at :http://www.ijedr.org/papers/IJEDR1502238.pdf