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OpenStudio Simulation Went Wrong. Help, Please!

asked 6 years ago

wendigoZ's avatar

updated 6 years ago

Dear all,

I have been trying to use OpenStudio to do a simulation for my academic project. So far I have followed the step by step tutorial on youtube channel of NRELOpenStudio. I created my model and set my building envelope, construction and so on. The building is 19,075 ft^2 community center in North Territories.

First run, I used ASHRAE 2009 building envelope for a small hotel, and I got a huge total site energy value of 7,605,800 kBtu.

Second run, I modified the building envelope to have higher (much higher) R-value, and I only got a slightly smaller number of 7,605,000 kBtu.

The result also shows that 91% of the energy is used for heating the building. I have no idea what went wrong with the model and other parameters. I have attached my testing model in this post if you would like to take a look. I will appreciate that you can leave any advice or help me out with this.

my testing model: https://drive.google.com/open?id=1jOY...

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answered 6 years ago

A quick review of the HVAC system shows a single duct VAV system with reheat with a fixed supply temperature year-round of 12.8C (55F), with the fan operating 24/7 year-round, delivering the design outdoor air flow rate 24/7. My guess is that the outdoor air controls should be scheduled or perhaps you intended to set the Controller:MechanicalVentilation to use demand-controlled ventilation?

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Asked: 6 years ago

Seen: 146 times

Last updated: Jan 07 '19