Inconsistent results with heating consumption (high values during the summer ???)

asked 2018-08-09 04:38:27 -0500

updated 2018-08-14 21:12:08 -0500

Hello, I just run my model where I used district heating for floors and water heating as mentioned here And while viewing the results I noticed that the heating consumption/demand is almost the same in summer (and there is actually a pick in July) as shown below: image description

Can anyone explain that to me? Does anyone have an idea about what could be wrong/ what can I do ?

I would appreciate your help,thanks :)

PS: I used the weather file for Stuttgart- Germany

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what are your unmet hours like? Try the unmet hours troubleshooting measure on BCL. You need to post more information if you'd like help.

mdahlhausen's avatar mdahlhausen  ( 2018-08-14 20:54:08 -0500 )edit

Hi @mdahlhausen sorry but I am new in modelling and simulating and specially while using OS, so I don't know how to check how my unmet hours are like ? or what kind of other information I could share ?

Update: I used the unmet hours troubleshooting measure and it worked, now I have results that make sense. Thanks a lot

Raghda Derbel's avatar Raghda Derbel  ( 2018-08-15 04:36:17 -0500 )edit

I am going to bet that since your DHW is also on district heating, that this is 99% DHW usage. This is somewhat reflected in your peak demand chart, which is consistent through the summer and bumps up a smidge in the winter. Look further into results to separate heating from DHW usage.

egillmor's avatar egillmor  ( 2018-08-15 12:20:06 -0500 )edit

@egillmor, but when I used water heating (with district heating as fuel type) I had a different but still strange result .

Raghda Derbel's avatar Raghda Derbel  ( 2018-08-16 06:59:01 -0500 )edit

And the thing is that I fixed the issue above while using unmet hours troubleshooting measure as suggested by @mdahlhausen and had a reasonable result even though I was still using district heating. But now that I added the radiant floor to my HVAC, the measure doesn't seem to work anymore and I have the same kind of unreasonable heating consumption/demand result again.

Raghda Derbel's avatar Raghda Derbel  ( 2018-08-16 06:59:08 -0500 )edit