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How to calculate the rated fan power for type 510 closed circuit cooling tower for a given mass flow rate of air and rated capacity of cooling tower

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Topic starter
  1. I don't have any information for rated fan power according to the design airflow condition for the cooling tower. Please suggest some thumb rule for fan power for the cooling tower for type 510.
  2. I also want to know how to calculate the rated capacity of the cooling tower for cost analysis. Are the values at design conditions giving   m_des*Cp* (Tdes_in-T_des_out) sufficient to calculate the capacity, or should I be modifying it with any other factors?
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@aditi_garg

My recommendation would be to look around online and see if you can find a cooling tower of similar size and take its specifications. Baltimore Air Coil ( http://www.baltimoreaircoil.com/pss) provides a really helpful tool online for which you can enter your design requirements and get back the specifications of a tower that will meet them (including both fan power and rated/design capacity at a particular design wetbulb temperature). For the fan power, another good resource is ASHRAE Standard 90.1 (and its User Guide). Appendix G contains a lot of useful rules of thumb for setting things like fan power based on knowing only the flowrate.

kind regards,

 David

 

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