Abstract
This chapter discusses the influence of longitudinal heat conduction through counter flow plate-fin heat exchangers with double cold channel. Plate-fin heat exchangers are used more and more widely because of their high performance and compactness. The longitudinal heat conduction through the fluids is in general negligible except in liquid metals at normal temperature. A group of governing equations for a counter-flow plate-fin heat exchanger with double cold channels are put forward on the basis of theoretical analysis and eventually solved by using differential method to confirm the heat loss caused by longitudinal heat conduction. A dimensionless longitudinal heat diffusion coefficient is proposed to indicate the effect of longitudinal heat conduction in heat exchangers. A degradation factor is introduced to consider the deterioration in the performance of the heat exchanger due to longitudinal heat conduction.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
