[Bldg-sim] Chiller Improvement Evaluation

[David Eldridge]

Depending on hourly occupancy of the facility I'd start with outside air temperature at the logged hours.

DSE Mobile

On Feb 11, 2014, at 8:52 AM, "Sebastian Carrizo" <juan.carrizo at alumni.carleton.ca<mailto:juan.carrizo at alumni.carleton.ca>> 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




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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
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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>


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