Question-and-Answer Resource for the Building Energy Modeling Community

Modeling an inverter based AC as a VRF

asked 2024-03-20 02:37:29 -0600

hk65
11 ●1

updated 2024-03-20 15:26:45 -0600

Aaron Boranian

14250 ●86 ●24 http://bigladdersoftware.com/

I modeled the inverter based AC as a VRF, but the simulated VRF energy consumption values are much higher than measured values of the inverter based AC. I tried changing the partload ratio curve coefficients because the load in the room is very small. It did not work. any suggestions?

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2024-03-20 15:34:34 -0600

rraustad

13834 ●79 ●12 http://www.fsec.ucf.edu/

Probably should be using cycling fan mode and also check the cooling EIRfPLR curve to make sure it represents the VS compressor energy. VRF will use a different curve. See figure 10 in https://www.fsec.ucf.edu/en/publicati.... The VS AC EIRfPLR curve will go lower than the one shown in the figure (blue line) and cross at 0,0.

edit flag offensive delete link

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

Stats

Asked: 2024-03-20 02:37:29 -0600

Seen: 91 times

Last updated: Mar 20

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

Modeling an inverter based AC as a VRF edit