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  • Users: engrrk
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  1. engrrk

    Type testing of pumps

    Dear all, Can anyone clarify what does the term type testing for pumps mean? The technical specifications for the pumps read as "All the pump models offered shall be type tested on the particular model". Thanks.
  2. engrrk

    Close-off pressure for low flow bypass valve

    Hi, While selecting the low flow bypass valve across the chiller to bypass the chilled water at low load conditions, which of the following should be considered as the close-off pressure for the valve selection? 1) The pressure developed by the chilled water pump at its minimum speed? or 2) The...
  3. engrrk

    Minimum air off-coil temperature

    Dear engineers, For one of my projects, the vendor has selected a computer room air-conditioning unit (CRAC). The selection parameters are as below: Supply air temperature from the unit = 19 deg C Return air temperature to the unit = 30 deg C Net sensible cooling capacity = 110 kW But, as per...
  4. engrrk

    Erection of chillers

    Hi, Can anyone advice me how to erect a 1500RT water cooled chiller (around 25,000 kg) in a covered plant room located at the roof slab? I understand that the chillers can be lifted to the roof floor slab using cranes/hoists. But how to move in the chillers into the plant room and how to place...

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