Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Calculating Mass Flow Rate In Heat Pump

Calculating Mass Flow Rate In Heat Pump

Calculating Mass Flow Rate In Heat Pump


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

RE: Calculating Mass Flow Rate In Heat Pump


To calculate the mass flow rate of water in a heat pump cycle, we need to know the heat capacity of the water and the temperature difference between the inlets and outlets of the system.

The formula to calculate the mass flow is:

m = Power / (Heat capacity * Delta T)

Therefore, with the data you have we can calculate the mass flow of water as:

m = 200 kW / (4.18* kJ/(kg °C) * 60 °C)
m = 0.794 kg/s

*The heat capacity of water is 4.18* kJ/(kg °C*

So, the mass flow of water in the heat pump cycle is 0.794 kg/s.

I hope it helps!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close