Counter Flow Heat Exchanger Equations

The most common arrangements for flow paths within a heat exchanger are counter flow and parallel flow.

Counter flow heat exchanger equations.

In the parallel flow arrangement of figure 18 8 a the hot and cold fluids enter at the same end flow in the same direction and leave at the same end. In a parallel flow exchanger both fluids in the heat exchanger flow in the same direction. For counter current flow heat exchanger with. The heat exchanger design equation can be used to calculate the required heat transfer surface area for a variety of specified fluids inlet and outlet temperatures and types and configurations of heat exchangers including counterflow or parallel flow.

We already saw that the design of a shell and tube heat exchanger is an iterative process. Using these shell tube heat exchanger equations. We combine these two types together with an index n to indicate the flow direction of fluid 2. Consider a parallel flow or counterflow heat exchanger consisting of fluid 1 fluid 2 and the wall separating these two fluids.

So there is no analytical formula for their effectiveness but just a table of numbers or a. For a parallel flow heat exchanger n 0 and for a counterflow heat exchanger n 1. 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. You can then use this model to simulate the heat exchanger performance and to verify if it will meet your.