Counter Flow Heat Exchanger Diagram

The main difference is that the tubeside fluid enters the exchanger at the opposite end of the shellside fluid.

Counter flow heat exchanger diagram.

In a parallel flow exchanger both fluids in the heat exchanger flow in the same direction. In counter flow heat exchangers the fluids enter the exchanger from opposite ends. We combine these two types together with an index n to indicate the flow direction of fluid 2. The flowing bodies can be liquids gases or even solid powders or any combination of those.

Shell and coil heat exchanger diagram spiral plate heat exchanger. Counter flow shell and tube heat exchangers. For example in a distillation column the vapors. It is a form of a plate heat exchanger usually made of stainless steel.

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. It can be operated as a parallel flow or as a counterflow heat exchanger. Consider a parallel flow or counterflow heat exchanger consisting of fluid 1 fluid 2 and the wall separating these two fluids. It is often used in cellulose industries where the heat exchanger is subjected to severe fouling and corrosion.

A counter flow or countercurrent shell and tube heat exchanger s construction is in many ways identical to that of a parallel flow shell and tube heat exchanger. A heat exchanger can have several different flow patterns. Crossflow parallel flow and counterflow heat exchanger configurations are three examples. Double pipe heat exchanger design requires use of the heat transfer rate the log mean temperature difference and an estimate of the overall heat transfer coefficient to calculate the estimated heat transfer surface area.

Generally in this type of heat exchanger the counter flow arrangement is used. A counterflow heat exchanger will require less heat exchange surface area than a parallel flow heat exchanger for the same heat transfer rate and the same inlet and outlet temperatures for the fluids. The counter current design is the most efficient in that it can transfer. A double pipe heat exchanger consists of one pipe inside another.

There are three primary classifications of heat exchangers according to their flow arrangement. For a parallel flow heat exchanger n 0 and for a counterflow heat exchanger n 1.