[Equest-users] Water-to-water and water-to-air heat pump off sameloop

[Aulbach, John]

Bill:
 
Remember a cardinal rule of eQuest/DOE-2 - ONE SYSTEM-TYPE to ONE ZONE.
I suggest you split your space into two zones and give each the
appropriate system. Put the majority of the load into the Radiant System
(since I will assume you want that more passive system to operate
first), then put an AIR-WALL between the zones and let the ducted system
take the rest of the load.
 
This thinking is before my first morning cup of coffee, so perhaps it is
backwards. But you probably know which system should be able to handle
what load.
 
Good luck.
 
John R. Aulbach, PE, CEM
Project Manager
Nexant, Inc.
701 West Kimberly Ave., Suite 245
Placentia, CA 92870-6342 USA
Phone: 714-524-4402
Fax: 714-524-4407
email: jaulbach at nexant.com
 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Bishop,
Bill
Sent: Friday, September 12, 2008 8:03 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Water-to-water and water-to-air heat pump off
sameloop



I would like to model a combination of forced air heat pump heating &
cooling with radiant slab heating. The ducted system would use a
water-to-air heat pump and the radiant slab would use a water-to-water
heat pump, both drawing off of a GLHP loop. Can I get there from here?

 

I thought of using a radiant slab system, and using the "Outdoor air
from system" to get conditioned air from a separate system. Is this an
option? Does the OA-from-system system have to be a 100% OA system?

 

Thanks,

Bill

 

William Bishop, EIT, LEED(r) AP | Pathfinder Engineers LLP

Mechanical Engineer

 

3300 Monroe Ave., Suite 306 
Rochester, NY  14618

TEL (585) 218-0730 Ext. 114
FAX (585) 218-0737 

bbishop at pathfinderengineers.com

 

www.pathfinderengineers.com

P Please consider the environment before printing this email

 

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