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Calculating Mass Flow Rate In Heat Pump

heat pump mass flow rate

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#1 rednaxela


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  • 2 posts

Posted 16 March 2023 - 09:36 AM



I am trying to calculate the mass flow rate of water (m) in a heat pump cycle. I currently have the power output required (200 kW) , temperatures (T1 = 20degC, T2 = 80degC) and enthalpies for the system (h1, h2, h3 & h4 - can provide). From what I understand m = power/(heat capacity * deltaT), however I am struggling to implement these values to obtain a mass flow rate.


I would be very grateful for any tips you can provide! Also, I can provide more information if required. 


Many thanks in advance

#2 breizh


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Posted 16 March 2023 - 08:42 PM


Share with us your work and show us your difficulties. 

You should use a Mollier diagram to visualize the process and get access to data ,then mass and heat balances to perform around evaporator and condenser, condenser and other valve.

https://energyeducat...ning into a gas.

Underneath a link to get access to thermophysical data:



Good luck


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