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What is apparatus dew point?

 When air is passed through cooling coil, it may get humidified or not. For Dehumidification, the coil is to   be kept at a mean temperature (ts) which is below the dew point temperature (DPT) of the entering air (td). This temperature ts is called 'Apparatus dew point' of the coil or simply ADP.


As the temperature determines the condition of the air supplied. It is to be controlled to obtain the desired conditions.

To find out the air quantity required and to select the equipment ADP is an important parameter. 

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