[Equest-users] No heating load to systems

[Umesh Atre]

Pasha,
I tried running your model as-is, and came up with a bunch of warnings
re low preheat/heating capacities. I added preheat
along with some humidity control for all the zones, and got the attached
output. 
Maybe the program was just not doing the heating voluntarily, and had to
be forced to.
Hope this helps,
Umesh
 
 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Pasha
Korber-Gonzalez
Sent: Wednesday, March 03, 2010 1:05 PM
To: James Hansen
Cc: eQUEST Users List
Subject: Re: [Equest-users] No heating load to systems


Thanks James.   I do have an additional HW loop pump...but I will take a
look at the thermostat schedule stuff.
 
Pasha


On Wed, Mar 3, 2010 at 11:01 AM, James Hansen <JHANSEN at ghtltd.com>
wrote:


	You might need to add a hot water loop pump instead of just
relying on a boiler pump.  See if that affects your heating energy
consumption.

	 

	Also, your zones don't appear to have any thermostat schedules
configured.

	 

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	From: equest-users-bounces at lists.onebuilding.org [mailto:
equest-users-bounces at lists.onebuilding.org] On Behalf Of Pasha
Korber-Gonzalez
	Sent: Wednesday, March 03, 2010 12:45 PM
	To: John Aulbach
	Cc: eQUEST Users List
	Subject: Re: [Equest-users] No heating load to systems

	 

	Thanks John--I hadn't input the reheat delta t, thinking that it
was one of those "blank" default auto-calc things....  so by inputting a
30 deg delta, that took away the error in the bdl file, but the results
are still not showing any space heating consumption and yet somehow I
have 0.0 hours out of throttling range---I thought this had to be too
good to be true.

	 

	I've attached the current .pd2 & .inp files I am running.  If
you do have time to take a quick peak at my inputs...this baseline file
is  based on Appendix G compliance.  please note my system names do not
match the system selection I have for baseline case.

	 

	Thanks for your time and attention to give me a hand.

	 

	Pasha

	On Wed, Mar 3, 2010 at 10:32 AM, John Aulbach <
jra_sac at yahoo.com> wrote:

	Pasha:

	 

	Have you specified your Reheat-Delta-T for your zone VAV boxes?
Send the .INP and .PD2 if you require further help.

	 

	 

	John R. Aulbach, PE, CEM

	Senior Energy Engineer

	
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________________________________


	From: Pasha Korber-Gonzalez <pasha.pkconsulting at gmail.com>
	To: eQUEST Users List <equest-users at lists.onebuilding.org>
	Sent: Wed, March 3, 2010 9:28:30 AM
	Subject: [Equest-users] No heating load to systems

	 

	Hi all,

	 

	I thought I was wrapping up my baseline model and then for some
reason I discovered that the only heating energy being used is going
through the zone baseboards.  When I take out the baseboards, the
results show a big fat ZERO for any space heating energy the DOE2 error
shows below.  How can the design loads not get passed to the system.
The baseline systems are VAV with reheat, but for some reason there is
no heat or reheat unless I specify pre-heat (which there is none) or
baseboards...  any ideas are appreciated--because I thought I was closer
to finished with this model until this issue popped up.

	 

	
***ERROR****************************************************************
*******

	Loop: Hot Water Loop has zero design flow.

	Check input for consistency, or specify design loads.

	 

	 

	
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