[Equest-users] Rehat to LAT 75F

[Fleming, Joe]

The HVAC system will provide neutral air, the air will first be cooled/dehumidified, then reheat to 75 degrees, and then delivered to the space.  For the most part the air will not mix with room air, it will just be exhausted out with an air curtain type of configuration.  (lab fume hoods).
Since the air is not mixing and since we can only apply one system per zone in equest, I have created a separate dummy system to handle the make-up air and exhaust air.  All I want the system to do, is to cool the entire quantity of air down to 55 degF and then reheat it to 75 degF.  I don't care what happens to the zone temp in my dummy space/zone.
An RHFS is my current system type for this dummy zone, but I think it may just be cooling and reheating as needed to maintain a foe space temperature.

Thank You

Joe Fleming
E.I., LEED AP BD+C, BEMP
Mechanical Engineer I

TLC Engineering for Architecture
Your 2030 Challenge Partner

800 Fairway Drive, Suite 250
Deerfield Beach, FL 33441-1816

phone:

954-418-9096

fax:

954-418-9296

direct:

954-418-4591

website:

www.tlc-engineers.com<http://www.tlc-engineers.com>


[cid:image001.gif at 01CBBBD6.D16DCAA0]<http://www.tlc-engineers.com/>

From: Josh Greenfield [mailto:JGreenfield at primerachicago.com]
Sent: Monday, January 24, 2011 1:48 PM
To: Fleming, Joe
Subject: RE: [Equest-users] Rehat to LAT 75F

By 'heating coil to reheat' do you mean a terminal reheat coil per zone?  If so, sounds like your system type should be a RHFS (Reheat Fan System) and that controls that unit based on leaving air temp instead of space control, and then you can set up your 20*F reheat coil for the zones.



[cid:image002.jpg at 01CBBBD6.D16DCAA0]
Josh Greenfield, PE<http://www.idfpr.com/dpr/WHO/pe.asp>, REP<http://www.cityofchicago.org/city/en/depts/bldgs/supp_info/chicago_energy_conservationcodeoverview.html>, LEED AP BD+C<http://www.gbci.org/main-nav/professional-credentials/credentials.aspx>, BEMP<http://www.ashrae.org/certification/page/2491>
Energy Services Manager
Associate Vice President
Primera Engineers, Ltd.
312.242.6392 Direct
jgreenfield at primerachicago.com
http://www.primerachicago.com<http://www.primerachicago.com/>
twitter:  twitter.com/PrimeraGreen

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Fleming, Joe
Sent: Monday, January 24, 2011 12:30 PM
To: eQUEST-users at onebuilding.org
Subject: [Equest-users] Rehat to LAT 75F

Does anyone know of a way to force a unit to cool air to 55 degF at all times, regardless of space temp, and then also force the use of a heating coil to reheat the supply air to 75 degF at all times regardless of space temp?

Thank You

Joe Fleming
E.I., LEED AP BD+C, BEMP
Mechanical Engineer I

TLC Engineering for Architecture
Your 2030 Challenge Partner

800 Fairway Drive, Suite 250
Deerfield Beach, FL 33441-1816

phone:

954-418-9096

fax:

954-418-9296

direct:

954-418-4591

website:

www.tlc-engineers.com<http://www.tlc-engineers.com>


[cid:image001.gif at 01CBBBD6.D16DCAA0]<http://www.tlc-engineers.com/>

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