[Equest-users] LS-A/ LS-B report shows no space heating load forsome zones

[Nick Caton]

Hey Sheldon,

Zeroes are not always a sign something is wrong...

Typical scenario / possible explanation:  A core zone is surrounded by
other zones with heating equipment.  During design day conditions
(coldest day in the winter), this core zone doesn't actually have any
need for heating because there's zero (or close to zero) heat flux
outward, due to the surrounding conditioned spaces.

"...the heat does not seem to be getting to these zones" is a conclusion
that suggests underheated hours however... is that the case?

Adjusting the thermostat/reheat inputs are examples of *possible*
solutions when there is an underheating symptom, but before proceeding
I'd first confirm there's a problem to be fixed, then try to come up
with clues and causes before resorting random fixes.  Note that
undercooled/underheated hours are always the symptom of another problem
(and a vague clue at best).  Your challenge is not to treat the symptom,
but to identify and resolve what's causing the under conditioned hours.


Another suggestion: review the advice/notes for LS-A and LS-B found in
Help > Tutorials and References > Detailed Simulation Reports Summary.  

Best of luck!

~Nick


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 

-----Original Message-----
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Sheldon
Mendonca
Sent: Tuesday, September 20, 2011 12:52 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] LS-A/ LS-B report shows no space heating load
forsome zones

Hi all,

My model report LS-A and LS-B shows that some zones do not have any 
heating peak loads/heat load components...  I have changed options for 
re-heat delta T, T-stat and other options but the heat does not seem to 
be getting to these zones. However, the zones beside them seem to be
fine.

Any suggestions??

Thanks,
Sheldon

-- 
Energy Engineer/Analyst
DSM Engineering Associates


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