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Re: [EnergyPlus_Support] Re: Air Cooled Condenser Inlet Temperature below 0C

Where do you think that outdoor air is going?

Zone/Sys Sensible Cooling Rate [W](Hourly) shows you what is reaching the zone, and


Fan Coil Sensible Cooling Rate[W] shows you what the overall "zone" sensible cooling rate of the fan coil is, coil operating or not.


On 3/22/2012 11:00 AM, Liam O'Brien wrote:
> Are you referring to outdoor air? I need the supply fan to run fairly continuously to supply outdoor air. And my cool water loop pump is off for the winter.
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad<RRaustad@...>  wrote:
>> Your fan coil is using continuous fan operation and blowing cold air
>> into the zone.
>>
>> On 3/22/2012 10:46 AM, Liam O'Brien wrote:
>>> Thanks, Jim. Good call. Got that fixed. I was trying to cool my zone in the dead of winter. This is not very realistic for Toronto...for now!
>>>
>>> New question to the group: Even on the coldest of days (~ -15C), my "Zone/Sys Sensible Cooling Rate [W](Hourly)" and "Fan Coil Sensible Cooling Rate[W]" are non-zero (and pretty high at 1-2 kW for a medium-sized zone), despite the fact that the chiller electrical load is 0W.  What's the meaning of  this?
>>>
>>> Thanks in advance,
>>>
>>> Liam O'Brien
>>>
>>> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jim Dirkes"<jim@>   wrote:
>>>> Liam,
>>>>
>>>> Essentially the same problem as " frost/freeze error", discussed earlier
>>>> today
>>>>
>>>>
>>>>
>>>> The Building Performance Team
>>>> James V. Dirkes II, P.E., BEMP , LEED AP
>>>> 1631 Acacia Drive NW
>>>> Grand Rapids, MI 49504
>>>> 616 450 8653
>>>>
>>>>
>>>>
>>>> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
>>>> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Liam O'Brien
>>>> Sent: Tuesday, March 20, 2012 12:51 PM
>>>> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
>>>> Subject: [EnergyPlus_Support] Air Cooled Condenser Inlet Temperature below
>>>> 0C
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Hi All,
>>>>
>>>> I've got DOAS with Fan Coil units serving each zone. I'm getting this error
>>>> message for many time steps during the year for my Toronto building:
>>>>
>>>> ** Warning ** ElectricEIRChillerModel - CHILLER:ELECTRIC:EIR "MAIN CHILLER"
>>>> - Air Cooled Condenser Inlet Temperature below 0C.
>>>>
>>>> Any thoughts?
>>>>
>>>> Thanks,
>>>> Liam
>>>>
>>>
>>> ------------------------------------
>>>
>>> Primary EnergyPlus support is found at:
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>>>
>>> The primary EnergyPlus web site is found at:
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>>>
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>>>
>>> Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.
>>>
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>>>
>>>
>>>
>> -- 
>> Richard A. Raustad
>> Senior Research Engineer
>> Florida Solar Energy Center
>> University of Central Florida
>> 1679 Clearlake Road
>> Cocoa, FL  32922-5703
>> Phone:   (321) 638-1454
>> Fax:     (321) 638-1439 or 1010
>> Visit our web site at: http://www.fsec.ucf.edu
>>
>> UCF - From Promise to Prominence: Celebrating 40 Years
>>
>
>
>
> ------------------------------------
>
> Primary EnergyPlus support is found at:
> http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
>
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
>
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
>
> Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.
>
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
> Yahoo! Groups Links
>
>
>
>

-- 
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL  32922-5703
Phone:   (321) 638-1454
Fax:     (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu

UCF - From Promise to Prominence: Celebrating 40 Years



------------------------------------

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