Counter Flow Heat Exchanger Equations

Consider a parallel flow or counterflow heat exchanger consisting of fluid 1 fluid 2 and the wall separating these two fluids.

Counter flow heat exchanger equations.

Often engineers prefer to use a heat exchanger design software to create a heat exchanger model. The effectiveness ntu relationships for crossflow heat exchangers and various types of shell and tube heat exchangers can be derived only numerically by solving a set of partial differential equations. A counter flow heat exchanger is one in which the direction of the flow of one of the working fluids is opposite to the direction to the flow of the other fluid. The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube or double pipe construction.

For a parallel flow heat exchanger n 0 and for a counterflow heat exchanger n 1. You can then use this model to simulate the heat exchanger performance and to verify if it will meet your. We already saw that the design of a shell and tube heat exchanger is an iterative process. The most common arrangements for flow paths within a heat exchanger are counter flow and parallel flow.

For counter current flow heat exchanger with. Using these shell tube heat exchanger equations. So there is no analytical formula for their effectiveness but just a table of numbers or a. In a parallel flow exchanger both fluids in the heat exchanger flow in the same direction.