[Equest-users] sources of undercooling?

[Carol Gardner]

Lauren,

What is the system type?

Carol

On Thu, May 6, 2010 at 3:39 PM, Pasha Korber-Gonzalez <
pasha.pkconsulting at gmail.com> wrote:

> There are so many things that can contribute to this issue or it could be a
> lack of inputs that may be causing some issues.  It depends, on underheating
> or undercooling, it depends if all of the hours are happening in one zone
> only or spread across all the zones?
>
> You'll need to start by reviewing the SS-F and SS-R reports to get more
> insight, then you might want to look at the SS-O reports for the specific
> zones that are troubled.  Sometimes it can be affected by schedules, or by
> lack of inputs, or equipment sizing ratios, or by specifying CFM's or
> equipment capacities, or , or, or....there are so many things that could
> affect this.
>
> Suggestions are to do a little engineering analysis on what could be
> causing the types of under-conditioning you are getting, (i.e. is it because
> there is not enough CFM being supplied to handle the loads?), next you could
> do experiements by "turning off" some of the inputs that you have used and
> see if one of those is the culprit, or you can ask someone else to look at
> your file.  You are welcome to send your .pd2 & .inp files to us and maybe
> someone will have some time to take a look at it and help find your issue.
>
> pasha
>
> On Thu, May 6, 2010 at 4:24 PM, Lauren Rosenthal <
> Lauren.Rosenthal at arup.com> wrote:
>
>>  All,
>>
>>
>>
>> What are some common sources/inputs that could cause unmet load hours,
>> especially for cooling hours?
>>
>>
>>
>> Almost all of my systems are creating unmet load hours and I’m not sure
>> what inputs could be the cause.
>>
>>
>>
>> Any suggestions would be greatly appreciated.
>>
>>
>>
>> Thanks,
>>
>>
>>
>> ____________________________________
>>
>> Lauren Rosenthal
>>
>> Mechanical Engineer
>>
>>
>>
>> Los Angeles CA
>>
>>
>>
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