Sampling systems:

Sample Coolers:
The sample coolers form the heart of the sampling system. These should preferably be coil-in-shell type design and should make use of counter flow type heat exchange principle. Double helix coils are in vogue nowadays.

Apart from being compact in size, coolers with double helix type coil design give better approach temperature than conventional single coil designs. A built-in shell relief valve takes care of possible mishaps due to high pressures caused by coil rupture etc.

These should be rated to severe temperature and pressure conditions existing in power plants and sized to take care of the heat loads.





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