Thermal analysis of counter flow concentric tube heat exchanger using Runge-Kutta method
M. Karthick, S. Ranjith Kumar, K. Athiappan, S. Joe Patrick Gnanaraj
Abstract
Concentric tube heat exchangers are used for multitude of applications ranging from heat transfer for low end applications to coolants in space vehicles. Typical heat exchange equations are sufficient to solve problems related to finite temperature difference. However, scientific solutions require complex calculations that considers losses and minute hast dissipations to give accurate results. Mathematical and analytical methods of counter flow heat exchanger is carried out in this study. Enumeration of heat exchange during counter flow is facilitated by incorporating Runge-Kutta Method. Comparison between the two analysis methods is carried out for two conditions making use of NTU approach. During one of the conditions the input values were maintained as same, during the second conditions, the input values were varied. The Runge-Kutta Method gave accurate results for both the conditions.