[Equest-users] Gas INFRA-RED Radiant

[Keith Swartz]

Arash,

If the radiant heater does not have any fan associated with it, like a radiant ceiling panel, then I zero out the fan energy like Nick mentions. When the radiant heater has a combustion air fan, like a gas-fired radiant heater, then I enter fan data that matches the combustion air fan to capture that energy consumption.

________________________________
Keith Swartz, P.E., LEED AP

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Energy Center of Wisconsin
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Fax: 608.238.0523

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From: Nick Caton [mailto:ncaton at smithboucher.com]
Sent: Friday, May 25, 2012 10:30 AM
To: Pasgar, Arash; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Gas INFRA-RED Radiant

Hi Arash,

There are a couple right answers.  Here's an approach I've used:

*        System type UHT

*        Zero out fan energy (0.00 kW/CFM), if there are no space circulation fans tied to your IR heater operation

*        eQuest doesn't simulate the skin-heating comfort effects of radiant heat.  If you run into unmet heating hours, you can justifiably lower associated thermotat setpoints to account for this.

*        DOE2 help files advise adjusting your HIR to 1.05 if products of combustion are not being vented out of the space (industrial applications).

~Nick

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NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com

From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Pasgar, Arash
Sent: Friday, May 25, 2012 10:09 AM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Gas INFRA-RED Radiant

Hi all,

First of all sorry about the previous message.

I have a storage using gas infra-red radiant heaters. Is there accurate way to model this.
Thank you in advance for your help.

Arash Pasgar
Mechanical Designer

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v. 210.546.0200 | www.dbrinc.com<http://www.dbrinc.com>

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