Heat exchanger calculations
Hydraulic diameter
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The hydraulic diameter, dh, is used instead of the geometrical diameter for channels of
non-circular shape. dh is defined as: | |
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For some typical geometries dh becomes: | |
circular tube |
 |
square tube | |
two concentric tubes
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| Principles of a heat exchanger |
| Logarithmic mean temperature and theta value |
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