The EGR (exhaust gas recirculation) technique can greatly reduce the NOx emission of diesel engines; especially when an EGR cooler is employed. Numerical simulations are applied to study the flow field and temperature distributions inside the EGR cooler. Three different models of EGR cooler are investigated, among which model A is a traditional one, shell and tube type, while models B is stack type. In model C, fins are added in stack type geometry. The results show that the heat exchange of the stack-type EGR cooler is much more effective than that of the shell and tube type because of the increased surface area and better mixing of the coolant flow. In conclusion, we suggest that the improved structures are more powerful than the traditional one. Keywords: Exhaust gas recirculation (EGR) cooler, computational fluid dynamics (CFD), shell and tube heat exchanger, stack type heat exchangerCite this Article Bhadouriya Raghvendra S, Pawan Detwal. Comparison of Stack Type EGR Cooler for Diesel Engine using CFD. Recent Trends in Fluid Mechanics. 2016; 3(2): 1–5p.
