Can I model a tank which has three different inputs and outputs?

asked 2020-02-19 05:59:59 -0600

mayks
61 ●2

updated 2020-03-08 11:41:42 -0600

Hello, I´m modelling a system in energyplus that has three cooling towers and three chillers and all of them are coupled to one accummulation tank. What object can I use? (I tried to use ThermalStorage:ChilledWater: Mixed but I just can put one inlet and one outlet node). The inlets of the accumulation tank comes from the cooling towers and then goes to the chiller.

I also want to know which object can I use for a stratified tank that can have also three inlets. Thank you

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answered 2020-02-20 04:09:47 -0600

mayks
61 ●2

I see what you have done, but my system is composed by two differnt loops each one with a different coolingTower and chiller but ther are connected through the tank. Can I still do it as you? My system is in the link below

link text

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This should have been a comment and not an answer. I'm getting a 403 (forbidden access) at the link you gave.

Julien Marrec ( 2020-02-20 05:15:28 -0600 )edit

https://drive.google.com/drive/folder...

I think now it will work

mayks ( 2020-02-20 05:35:44 -0600 )edit

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answered 2020-02-20 03:59:35 -0600

Julien Marrec

29706 ●94 ●76 http://www.effibem.com/

I can suggest an idea...

Your Cooling Towers would be on the supply side of a plant loop, on parallel branches. Then it mixes via the PlantLoop Mixer, goes to the demand side, at which point you just place a WaterHeater:Mixed (or WaterHeater:Stratified).

That WaterHeater:Mixed is then on the supply side of another plant loop, and on the demand side you place all three chillers in parallel (their condenser nodes). The Pump for that loop can be "virtual" with a very low pressure rise and almost 0 power used.

The three chillers are then on the supply side of the Chilled water loop (evaporator side), serving the building load.

Here's a showcase of my Pinta (Paint) skills:

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