[Equest-users] Preheat Coil Energy Use

Robby Oylear robbyoylear at gmail.com
Fri Aug 12 10:20:10 PDT 2011


For example, if I switch the pre-heat source type from Furnace to Electric
there is no change in energy use for either fuel type.

On Fri, Aug 12, 2011 at 10:06 AM, Robby Oylear <robbyoylear at gmail.com>wrote:

> John,
>
> With a system with heating-type = FURNACE, I add a pre-heat coil of type =
> FURNACE and the total heating energy use drops from 900 MBTU to 50 MBTU, yet
> there are no unmet load hours.
>
> I don't see how the system could be meeting the loads yet using no energy.
>  If I look at the SS-B report there is a fractional use of energy for
> preheat.
>
> *Robby Oylear, LEED**®** AP BD+C*
>
> *Mechanical Project Engineer*
>
> *Energy Analyst*
>
> * *
>
> *D* 206-788-4571 | *C* 206-354-2721
>
> *www.rushingco.com* <http://www.rushingco.com/>
>
> On Fri, Aug 12, 2011 at 9:58 AM, John Aulbach <jra_sac at yahoo.com> wrote:
>
>> Robby, I believe the preheat and other heating coils combine in HVAC
>> heating notation.
>>
>> John R. Aulbach, PE, CEM******
>> Senior Energy Engineer****
>>  ------------------------------
>>  *Partner** **Energy*
>> 1990 E. Grand Avenue, El Segundo, CA 90245
>> W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745****
>> www.ptrenergy.com | jaulbach at ptrenergy.com****
>>
>>
>>   *From:* Robby Oylear <robbyoylear at gmail.com>
>> *To:* equest-users at lists.onebuilding.org
>> *Sent:* Friday, August 12, 2011 9:49 AM
>> *Subject:* [Equest-users] Preheat Coil Energy Use
>>
>> I've been experiencing a problem with preheat coils in eQUEST that meet
>> the load requirements but none of the energy use shows up in the BEPS
>> report.  Is there any solution to this or is it a bug in the program?
>>
>>  *Robby Oylear, LEED**®** AP BD+C*
>> *Mechanical Project Engineer*
>> *Energy Analyst*
>> * *
>> *D* 206-788-4571 | *C* 206-354-2721
>> *www.rushingco.com* <http://www.rushingco.com/>
>>
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>
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