Heat Exchanger Effectiveness

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

The heat-exchanger effectiveness is the ratio of the actual rate of heat transfer in the given exchanger to the hypothetical rate of heat transfer if the area of the exchanger were infinite. This effectiveness is given by



where and are the inlet and outlet temperatures of the hot fluid, is the inlet temperature of the cold fluid, and is the ratio of heat capacities of the cold (low) and hot (high) fluids, given by


The Demonstration plots the effectiveness of a heat exchanger for both parallel flow and counter-flow configurations versus the number of transfer units for various values of .


Contributed by: Housam Binous and Ahmed Bellagi (March 2011)
Open content licensed under CC BY-NC-SA



C. J. Geankoplis, Transport Processes and Unit Operation, 3rd ed., Englewood Cliffs: Prentice–Hall, 1993.

Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.