[Equest-users] How to model infrared gas heater

[Nicholas Caton]

Another fast approximation might involve:

-          Unit heaters on a per zone basis

-          Zeroed out fan energy

-          Drop zonal heating setpoint by ~10 degrees from comfort
(reference specified manufacturer recommendations and general guidelines
regarding occupant comfort for the associated controls)

-          Assign a unitary efficiency for the “furnace” of the unit
heaters in consideration of what radiant fraction is expected to be
delivered to the space vs. exhausted (for powered IR units only)

-          Noting IR heating is commonly leveraged in exterior and
semi-exterior environments where heating the conditioned volume of air
doesn’t make sense due to fast turnover / wind effects:  Invest some of the
time you’ve saved so far to give some serious consideration to the
associated infiltration inputs, to accurately capture outside air change
rates



There’s

~Nick



*NICK CATON, P.E.*
*Owner*



*Caton Energy Consulting*
  306 N Ferrel

  Olathe, KS  66061

  office:  785.410.3317

www.catonenergy.com



*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
Behalf Of *Bishop, Bill
*Sent:* Wednesday, October 07, 2015 3:13 PM
*To:* Humphreys, Matthew; equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] How to model infrared gas heater



You can approximate a gas infrared heater by adding baseboard heating to
your system and selecting BASEBOARD-SOURCE = FURNACE.



Regards,

~Bill



*William Bishop, PE, BEMP, BEAP, CEM, LEED AP **|** Pathfinder Engineers &
Architects LLP*

*Senior Energy Engineer*





134 South Fitzhugh Street                 Rochester, NY 14608

*T: (585) 698-1956              *          F: (585) 325-6005

bbishop at pathfinder-ea.com <wbishop at pathfinder-ea.com>
www.pathfinder-ea.com

[image: http://png-5.findicons.com/files/icons/977/rrze/720/globe.png]Carbon
Fee and Dividend - simple, effective, and market-based.



*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org
<equest-users-bounces at lists.onebuilding.org>] *On Behalf Of *Humphreys,
Matthew
*Sent:* Wednesday, October 07, 2015 4:06 PM
*To:* equest-users at lists.onebuilding.org
*Subject:* [Equest-users] How to model infrared gas heater



Does anyone have an idea how to model a gas infrared heater in eQUEST?


*Matthew Humphreys, PE *Mechanical Engineer
Associate
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

*SSOE Group*
256.585.6269* direct*
256.534.2353 x8676269

*mhumphreys at ssoe.com*
<MHumphreys at ssoe.com>

*We're exploring how advances in cloud technology, design software, and
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