[Equest-users] Heat Recovery / Run around coil

[Martz, Amanda]

I specified the max airflow the unit is designed for, but it might not
see all of this exhaust air at any given point. I would rather it size
itself based on what exhaust it calculates. It's hard to tell what it's
doing with the information it has and what I give it. 

 

Also, I'm not sure what to do with the pump power for the glycol loop. I
don't have the glycol loop included in the model as a circulation loop
because its MBH varies depending on time of year, but I need to include
that power somewhere.

 

________________________________

From: Brian Fountain [mailto:bfountain at greensim.com] 
Sent: Thursday, July 15, 2010 8:51 PM
To: Martz, Amanda
Subject: Re: [Equest-users] Heat Recovery / Run around coil

 

If I am not mistaken, in the ERV definition you can specify the OA and
EA air flows.  They default to the OA being delivered but you can alter
the EA value for this case as appropriate.

Martz, Amanda wrote: 

I have 4 air handling units and all of their air is being exhausted to
the same exhaust manifold. I have a heat recovery glycol run around coil
in that exhaust stream of air, and the glycol is returning that heat to
only one of the four air handling units.

 

Is there any way to model this? I have heat recovery turned on for just
the one unit that the heat is being returned to, but this doesn't
account for the other 3 units' exhaust air. Thanks for all of your help!

 

Amanda E. Martz, EIT, LEED AP

Mechanical Engineer

KlingStubbins

2301 Chestnut Street
Philadelphia, Pennsylvania
19103

P 215.569.2900, ext. 3612

F 215.569.5963
E amartz at klingstubbins.com 
W www.klingstubbins.com <http://www.klingstubbins.com/> 

 

 

 



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