Numerical Calculation of Heat Transfer in Water Heater

This article is trying to determine the status of flue gas
that is entering the KWH heat exchanger from combustion chamber
in order to calculate the heat transfer ratio of the heat exchanger.
Combination of measurement, calculation and computer simulation
was used to create a useful way to approximate the heat transfer rate.
The measurements were taken by a number of sensors that are
mounted on the experimental device and by a thermal imaging
camera. The results of the numerical calculation are in a good
correspondence with the real power output of the experimental
device. That result shows that the research has a good direction and
can be used to propose changes in the construction of the heat
exchanger, but still needs enhancements.

• Michal Spilacek
• Martin Lisy
• Marek Balas
• Zdenek Skala

• Heat exchanger
• heat transfer rate
• numerical calculation
• thermal images.

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