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  • Users: redif
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  1. redif

    By pass valve

    Hi, We have designed a fresh water cooled condenser for a refrigeration plant at 37 degC inlet water temperature. But later it is found that the inlet fresh water temperature is not stable. In winter it may go below to 5 degC. My question is "will the compressor/condensor unit will function...
  2. redif

    Room temperature

    Hi, Iam working on the ventilation design for a Electric switch board room When the ventilation system is working, the inside condition is to be maintained at 35 deg C. My client want know that incase of failure of the ventilation system, In how much time the inside temperature will reach 45...
  3. redif

    Airflow checking

    Hi, We are designing a fan and duct system. The rooms should always be ventilated. As per our client's requirement, if there is a reduction in airflow ( due to any fault), it has to be signalled at remote controlled station. There are two ways to send signal to remote station. 1. By providng...
  4. redif

    Delta T for heating applications.

    The design room temperature inside the room is 5 DegC. Outside temeprature is sub zero deg C( around -20DegC). The room should be heatde suitably. In general what is the good engineering practice between supply air air temperature and the room temperature ( Delta T)for heating applications. Is...
  5. redif

    Rational Psychrometric Formulae by W.H. Carrier

    Friends Can some one provide information or internet link to original Paper "Rational Psychrometric Formulae" presented by W.H. Carrier in 1911.
  6. redif

    Indicated ADP & Selected ADP

    Can someone explain the following in refrence to Carrier E-20 method of Cooling load Calculations 1. What is the diffrence in "Indicated ADP" and "Selected ADP". 2. What are the criterion for selecting the "Selected ADP" 3. What is the effect of Selected ADP on...

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