[Bldg-sim] Chiller Improvement Evaluation

[RobertWichert]

For that you need to model the building with local weather data, Sebastian.



Robert


============================================
On 2/11/2014 6:52 AM, Sebastian Carrizo wrote:
> My biggest problem right now is how to develop an hourly cooling load 
> profile from one-a-day measurements taken in the field. Is there any 
> standard/general daily cooling profiles that I could use?
>
> Thanks,
> Sebastian
>
>
> On Tue, Feb 11, 2014 at 9:47 AM, RobertWichert <robert at wichert.org 
> <mailto:robert at wichert.org>> wrote:
>
>     Dear Sebastian,
>
>     I start with kW/ton ratings at AHRI conditions from the
>     manufacturer.  Those are good inputs into the software. I use
>     Energy Pro, but I believe most software can take that as input.
>
>     It is theoretically possible to estimate performance with
>     evaporative pre-coolers if you have reliable effectiveness and
>     chiller data.
>
>     Most programs will allow VFD or multi-speed pumps as well.
>
>
>     Robert Wichert
>
>
>
>
>     =================================================
>
>
>
>     On 2/10/2014 1:56 PM, Sebastian Carrizo wrote:
>>     Hi all,
>>
>>     I'm trying to assess possible energy savings from improving
>>     different areas of a chiller plant (cooling towers, adding free
>>     cooling, VFDs, controls). Currently all the information I have is
>>     a snapshot of the chiller plant performance at 2pm every day of
>>     the summer.
>>
>>     Is there a simple way to evaluate kWh saved? If modelling is the
>>     best option which software is the best for this kind of analysis?
>>
>>     Thanks for any help,
>>     Sebastian
>>
>>     -- 
>>
>>         *Juan Sebastian Carrizo*
>>         M.Eng Sustainable Energy | B.Eng Industrial Engineering
>>
>>         (c) 647-225-2243 <tel:647-225-2243> |
>>         juan.carrizo at alumni.carleton.ca
>>         <mailto:juan.carrizo at alumni.carleton.ca>
>>
>>
>>
>>
>>
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>
>
>     -- 
>     Robert P Wichert P.Eng. Inc.
>     LEED AP, HERS II, CEA
>     +1 916 966 9060  <tel:%2B1%20916%20966%209060>
>     FAX+1 916 966 9068  <tel:%2B1%20916%20966%209068>
>
>
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>
>
>
> -- 
>
>     *Juan Sebastian Carrizo*
>     M.Eng Sustainable Energy | B.Eng Industrial Engineering
>
>     (c) 647-225-2243 | juan.carrizo at alumni.carleton.ca
>     <mailto:juan.carrizo at alumni.carleton.ca>
>
>
>


-- 
Robert P Wichert P.Eng. Inc.
LEED AP, HERS II, CEA
+1 916 966 9060
FAX +1 916 966 9068

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