Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Heating Electricity (J) output less than the sum of the contributing parts

asked 2018-10-21 15:17:39 -0600

sirikhsand gravatar image

updated 2018-10-22 08:07:09 -0600

Hi everyone,

I am trying to figure out what contributes to the Heating:Electricity output. I have looked at .mtd output file and I can see that the following contributes to the Heating:Electricity:

Heating Coil Electric Energy [J] Heating Coil Defrost Electric Energy [J] Heating Coil Crankcase Heater Electric Energy [J] Heating Coil Electric Energy [J] (Supplementary)

However, when I look at the output the addition of all of these, it is much greater than the Heating:Electricity output. Everything is in the same units and timestep. Does anyone know why the heating is less than the sum what contributes to it? What am I doing wrong?

edit retag flag offensive close merge delete

Comments

I ran a quick test with one of the heat pump example files and the meter agrees with the components. Please share the idf file either here or e-mail it to energyplus-support@gard.com.

MJWitte gravatar imageMJWitte ( 2018-10-23 07:37:02 -0600 )edit

Hi MJWitte,

I have sent the idf file via email.

The model was created by someone else and I am checking that I can use it for my purposes. I am also having an issue where the temperature is flat while the HVAC is on, and I am trying to figure out why that is happening/the calculation behind it while heating energy dwindles away. I have attached a spreadsheet (sent via email) with some graphs.

I would appreciate any insight into this problem.

Thanks in advance, Sandi

sirikhsand gravatar imagesirikhsand ( 2018-10-23 14:44:52 -0600 )edit

1 Answer

Sort by ยป oldest newest most voted
1

answered 2018-11-06 16:59:08 -0600

Based on the idf file sent to the helpdesk, the components outputs listed in the mtd output for "Heating:Electricity" sum to the same value as the Heating Electricity reported in the Annual Building Utility Performance Summary. So it appears to be working correctly.

edit flag offensive delete link more

Comments

ref: helpdesk ticket 13088

MJWitte gravatar imageMJWitte ( 2018-11-06 16:59:34 -0600 )edit

Your Answer

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

Add Answer

 

Question Tools

Stats

Asked: 2018-10-21 15:17:39 -0600

Seen: 45 times

Last updated: Nov 06