Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
2

Different outdoor temperature in the same weather data in EnergyPlus

asked 5 years ago

rezaei2's avatar

updated 5 years ago

Hello,I ll be appreciate if anybody could answer my question. I used the same weather data, and run periods for 2 buildings.But after the simulation the results of weather in peak are different, such that " outdoor Temperature at Peak",and Outdoor Humidity Ratio at Peak Load in some zones. There are 2 different systems HVAC (GLHP with a VAV system, Boiler and chiller with a VAV system), but the same building(Materials,schedules of lighting...etc). I attached the images of 2 systemsو and I've highlighted the zones have the problems. Buildings have the same zones (5 zones),and geometries. Thank you, image description(/upfiles/1579887062505534.png)image description

Preview: (hide)

Comments

@rezaei2 - Do you have SizingPeriod:DesignDay objects? If so that's probably the first info you see in the table, the second one is probably from the weather file. PS: I just pasted your pictures into your original post since they're not part of a answer. I couldn't delete the answer though.

Jeremy's avatar Jeremy  ( 5 years ago )

The sizing period:Design day are same(They have the same Design day). I added the design image in bellow.

rezaei2's avatar rezaei2  ( 5 years ago )

What I suggest is that the "weather condition" info ("design day name" column) correspond to data based on the weather file, not from the SizingPeriod:DesignDay. You can see that for the "weather condition, the date and time of peak is different for both buildings, the peak occurs at different times.

Jeremy's avatar Jeremy  ( 5 years ago )

Thank you so much Jeremy.I'll check that.

rezaei2's avatar rezaei2  ( 5 years ago )

1 Answer

Sort by » oldest newest most voted
0

answered 5 years ago

rezaei2's avatar

updated 5 years ago

image description(/upfiles/1579887062505534.png)image descriptionimage descriptionimage description

Preview: (hide)
link

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

1 follower

Stats

Asked: 5 years ago

Seen: 203 times

Last updated: Jan 24 '20