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fabio81
Posts: 25
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 Posted: Tue Mar 02, 2010 3:16 pm Post subject: Temperature |
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Hello everyone,
First excuse my English.
I set up a DB setback temperature at 20 ° C, but get higher values in the simulations, ie during the day the temperature ever rises above 20 ° C, as much as 24 ° C.
How do I fix this problem? Is there some setting wrong?
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Andrew Bairstow
Site Admin
Posts: 347
Location: Birmingham, UK |
| Posted: Tue Mar 02, 2010 5:16 pm Post subject: |
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Apologies for moving your post but this is the most appropriate forum and will best reach the target audience. If you are able to attach the dsb file then this would help.
Regards
Andrew
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Andrew Bairstow
DesignBuilder Software |
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fabio81
Posts: 25
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| Posted: Tue Mar 02, 2010 6:41 pm Post subject: Temperature |
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Hi,
reading the above message seems to me that you asked me to attach the file dsb.
thanks
| Description: |
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Download |
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Prova di comprensione con Hot water radiator heating, mixed mode with nat vent, local comfort cooling.dsb |
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3.76 MB |
| Downloaded: |
253 Time(s) |
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jean marais
Posts: 95
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| Posted: Wed Mar 03, 2010 2:18 pm Post subject: |
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| Usually "Setpoint" is used during the day, and "Setback" is used for night time cooling. Check to see if the night time temperatures are over 20...probably not. Then check that the Setpoint temperature is set to 20.
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bhandari
Posts: 120
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| Posted: Thu Mar 04, 2010 1:56 am Post subject: |
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I looked at your model. The cooling setpoint temperature is 26 C. I ran the model for a summer week and the air temperature were being controlled at 26 C, as expected. You may be looking the radiant temperature.
Mahabir
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bhandari
Posts: 120
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| Posted: Thu Mar 04, 2010 2:00 am Post subject: |
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Just forgot to mention, your are using an older version of DB, ver 2.0, you may want to upgrade to ver 2.1. Minor upgrades are free.
mahabir
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fabio81
Posts: 25
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| Posted: Thu Mar 04, 2010 10:00 am Post subject: Temperature |
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| Thanks to all
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fabio81
Posts: 25
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| Posted: Thu Mar 04, 2010 10:01 am Post subject: Temperature |
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Thanks Mahabir,
But my problem is the winter where temperatures as high as 23 ° C. I thought it was a problem of adjustment (do not know if the translation into English is correct) plants. What do you think?
Thanks
Fabio
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bhandari
Posts: 120
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| Posted: Thu Mar 04, 2010 2:37 pm Post subject: |
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You have a heating setpoint of 20C which is being achieved i.e. whenever your room temperature is lower than this setpoint the heating will be switched on. The simulation results show this behavior. You have relatively large window area and internal gains (lighting and equipment) in your room so you are experiencing higher temperatures. If you would like to control your temperatures to a specif temperature (or temperature range) you would need to switch on cooling as well..
Mahabir
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fabio81
Posts: 25
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| Posted: Thu Mar 04, 2010 3:24 pm Post subject: Temperature |
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Hello Mahabir, thanks for your reply, however if you see the forum I have made another demand: that is, ask whether you can set a rule for plants (for example fan coils have the three-way valves), but this kind of information I could find it. You know why?
Thanks
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