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How to Create Fan Coil System in OpenStudio

asked 2021-03-17 17:16:07 -0600

atmaca gravatar image

Hello Friends,

I'm an Architect. So, I know a few HVAC system knowledge. I try to create Fan Coil System in OpenStudio. But I don't know Fan Coil system components. Does anyone have a sample fan coil system scheme? I could not find a sample OS Fan coil scheme on the internet. Or could you recommend a resource?image description

Thank you.

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I would add a suitable air loop and populate it with a suitable DX coil, a suitable fan and suitable resistive heating coil, for example. Or if this is a CHW and/or HW driven fan coil, I would populate the air loop with a cooling and/or heating water coil and add a fan. If so, you will also have to add a chiller and/or boiler plant loop. The name fan coil does by no means describe a unique piece of equipment - its meaning can be interpreted a number different ways by MEP engineers (e.g. DX vs CHW vs. HW, cooling only or cooling and heating or heating only), so you there is "one" FCU.

mattkoch gravatar image mattkoch  ( 2021-03-18 19:13:08 -0600 )edit

Thank you for your suggestions. I will try to improve Fan coil knowledge.

atmaca gravatar image atmaca  ( 2021-03-19 04:31:19 -0600 )edit

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answered 2021-03-20 20:10:04 -0600

Petros Dalavouras gravatar image

1st step is to create a chilled water loop. Make sure you click on the dotted line and choose the appropriate loop type as well as the rest of the settings

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2nd step is to create a hot water loop. Same story here, click on the dotted line and select all the appropriate settings

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3rd step is to go to the thermal zones tab. Drag and drop a four pipe coil object of your choosing from library to the Zone Equipment and then click on it. You will see two chain like icons on the top right of you screen, click each one and connect the OS:Coil:Heating:Water with your hot water loop and the OS:Coil:Cooling:Coil with your chilled water loop.

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This way you can create a fan coil system. My suggestion would be though, to increase your knowledge in HVAC systems first and then try to model them.

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This schematic expression is very helpful. I will do your suggestions. You are right, I should learn about HVAC knowledge.

atmaca gravatar image atmaca  ( 2021-03-21 08:28:04 -0600 )edit
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answered 2021-03-20 22:17:13 -0600

Ammar De gravatar image

If you are not familiar with HVAC systems modeling, I suggest that you use default libraries or existing measures related to any HVAC system in mind. You can search for measures related to fan coil systems (for instance, a measure called NZEHVAC contains several fan coil system configurations) from Components & Measures > Find Measures and then apply that measure using Components & Measures > Apply Measures Now. This way you will be able to inspect the HVAC system scheme and its components, and then you can fine tune the system before running it.

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Thank you very much for your suggestions. I will use at the next files.

atmaca gravatar image atmaca  ( 2021-03-21 08:25:52 -0600 )edit
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answered 2021-03-19 05:35:30 -0600

atmaca gravatar image

I added a pump, a Deck, Boiler HW and Chiller-Air Cooled.

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Also, I arranged PipeFanCoil. I connected Plant loop1 for heating and cooling. So, should I add Fan Constant Volume etc.?

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It looks like you have a chiller and a boiler in one and the same plant loop. I have never seen that in OpenStudio, even though it might correctly represent a four pipe system. Are you able to schedule the chiller and boiler such that they do not come on at the same time? Also, how do you enforce chilled water going to the cooling coil and hot water going to the heating coil only? I have only ever modeled separate boiler and chiller loops, so probably will not be of much further help. Good catch on the Zone Equipment Fan Coil. It saves you from having to create lots of air loops.

mattkoch gravatar image mattkoch  ( 2021-03-19 22:21:50 -0600 )edit
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answered 2021-04-02 08:37:40 -0600

Archi-Jin gravatar image

I am a graduate student in architecture, but I still suggest that our professionals use an ideal air-conditioning system to simulate, which saves time and can aid architectural design.

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Asked: 2021-03-17 17:16:07 -0600

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Last updated: Apr 02