[Equest-users] eQUEST: Hours outside throttling range forStandard VAV w/Reheat

[Gordon D. Schweitzer]

Thanks Umesh - However, I do believe that in the "Layer by Layer"
Construction tab the unit is R-Value, as opposed to the U-value.  Thank
you for double checking though, as that is a critical piece of
information.  
 
 
 

Gordon D. Schweitzer III, LEED AP BD+C

Mechanical Engineer

Heapy Engineering
A LEED-NC SILVER CERTIFIED FACILITY

1400 West Dorothy Lane

Dayton, OH 45409-1310
Phone: (937) 224-0861
FAX: (937) 224-5777

www.heapy.com <http://www.heapy.com/> 
 

________________________________

From: Umesh Atre [mailto:umesh at innovativedesign.net] 
Sent: Thursday, May 06, 2010 5:22 PM
To: Gordon D. Schweitzer; Pasha Korber-Gonzalez
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] eQUEST: Hours outside throttling range
forStandard VAV w/Reheat


Gordon,
Your roof u-value is defined as 34.28. Note that the user-defined value
is not the R-value, which is probably what you were
trying to define? Please edit to reflect the correct u-value. Maybe this
will help some.
 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Gordon
D. Schweitzer
Sent: Thursday, May 06, 2010 12:04 PM
To: Pasha Korber-Gonzalez
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] eQUEST: Hours outside throttling range
forStandard VAV w/Reheat


Thanks Pasha. I originally included a zipped folder, but it may have
been too big (~2MB). Please see attached. 
 

Gordon D. Schweitzer III, LEED AP BD+C

Mechanical Engineer

<http://www.heapy.com/> 

________________________________

From: Pasha Korber-Gonzalez [mailto:pasha.pkconsulting at gmail.com] 
Sent: Thursday, May 06, 2010 11:58 AM
To: Gordon D. Schweitzer
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] eQUEST: Hours outside throttling range for
Standard VAV w/Reheat


Gordon, go to the SS-F reports for each zone in your DOE2 output, here
you will be able to identify which zones suffer from underconditioning
and whether it is heating or cooling energy that is insufficient.  If it
is heating energy (i.e. underheated) which is my guess for your model
then you can adjust items to offer more heating energy.  You might want
to install baseboards in your system & zones, you may need to adjust
your reheat coil delta T, or something else.
 
You can always send us your .pd2 & .inp files so that we can open up
your project, review it and give you some suggestions.
 
pasha


On Thu, May 6, 2010 at 7:31 AM, Gordon D. Schweitzer <
GDSchweitzer at heapy.com> wrote:


	All,
	
	I am modeling a "Standard VAV w/Reheat" for a small college
building (~20,000 SF) and am having some difficulty reducing my hours
outside of throttling range. I have tried increasing my "Throttling
Range" to 4 F, increasing my system size capacity (from 1.15 to 2), and
have also adjusted my "Heat Temp Schedule" to turn all but one zone to
default to create a 'control zone' for the system.  However, I still
have many unmet hours (~39% of hours outside of throttling range - my
BEPU report does not identify hours, but rather a % (reference previous
Equest thread)).
	
	
	Any suggestions are certainly welcome!
	
	Thanks in advance,
	
	
	Gordon

	

	
	
	<http://www.heapy.com/> 

	

	


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