Re: [EnergyPlus_Support] Re: Thermostat Float/Throttling Range

[Jason Kirkpatrick <jason.alan.kirkpatrick@xxxxxxxxx>]

I think that you can achieve this with a AvailabilityManager:Nightcycle object

Set the thermostat setpoint to 23 deg C, have the HVAC System Operation Schedule set to always off

Use 2 deg C as your thermostat tolerance and set the control type to CycleOnAny

This should make you cooling system stay off until zone temp = 25 deg C and then system comes on to cool until 23 deg C

On Thu, Jun 23, 2011 at 1:06 PM, YuanLu Li <yli006@xxxxxxxxxxx> wrote:

 

I thought type 1 or 2 thermostat control would give you the set back as you discribed.

 Dr. Li  

 

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To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jeannieboef@xxxxxxxxx
Date: Thu, 23 Jun 2011 04:16:09 +0000
Subject: [EnergyPlus_Support] Re: Thermostat Float/Throttling Range

 

Generally, you are correct (not possible) although I have been able to mimic this type of control using EMS. I used negative process loads to cool a space which I turned on at the upper bound temp and off at the lower bound temp after checking that there is no heating on at the same time. Basically EMS allows little IF statements which are called during the normal simulation. It's a very nice part of e+.

You can manipulate a few object types including schedules, outputs, etc. Check out the EMS documentation.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "moe_wilensky" <moe_wilensky@...> wrote:
>
> From my initial look around this forum it would seem that on is unable to define a Thermostat Float/Throttling Range in Energy plus. Is this still the case?
>
> For example , I want the cooling to kick on at 25, run until the temp is 23 and then turn off until the temp drifts back up to 25. is it possible to define the 2 degrees float on top of my 23 degree set point?
>
> Thank you in advance for your time.
>
> -Will
>

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