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Open Studio 2.9.1 Plug Load Multiplier Errror

asked 2020-09-30 15:46:28 -0500

mikemorris gravatar image

Hello,

I cannot figure out why my simulation results are applying my plug load multiplier twice. There is a similar post i found that seemed to address this but it all came down to the load definition already including the multiplier, I am sure that is not the case for mine. I'm applying fitness equipment to a gym space and have treadmills, ellipticals, and stationary bikes. So I created one definition for each and then in the space I put that definition and applied the multiplier on the space load. In my reporting it multiplies twice.

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Just to be clear, you want to have 26 treadmills x 650 W/treadmills in your zone, you are afraid you are getting 26 x 26 treadmills x 650 W/treadmills?

macumber gravatar imagemacumber ( 2020-09-30 22:25:41 -0500 )edit

That is exactly what is happening. And it happened in all the spaces where I put elec equip with multipliers.

mikemorris gravatar imagemikemorris ( 2020-10-01 08:50:44 -0500 )edit

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answered 2020-10-01 02:04:14 -0500

updated 2020-10-01 02:04:49 -0500

@mikemorris thanks for pointing that out. I looked at the code, and non-default multipliers were not handled on that table for plug loads per area, per person or design level. Below is a link to fix that I'll push to BCL once OpenStudio 3.1 is released. I did inspect the space lighting detail table, and it didn't have the same issue. https://github.com/NREL/openstudio-co...

Just to clarify a bit. I believe that your simulations were correct, and that this was just an issue with that table. The load column was giving the instance load, which included the multiplier, when it should have been giving the definition load level.

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Thanks @davidgoldwasser. I appreciate the clarification as well. I am having to work in 2.9.1 for now because of some Austin Energy measures that to my knowledge are not available in OS 3.0+ yet. So if the simulation is correct and just not the output table I'll be able to work with that.

mikemorris gravatar imagemikemorris ( 2020-10-01 12:03:12 -0500 )edit

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Asked: 2020-09-30 15:46:28 -0500

Seen: 52 times

Last updated: Oct 01