Got an idea, but it needs further research. I run DOE-2.1E, and PoweDOE is 2.2, but everything in my version carries forward in intent and philosophy into 2.2.
Chose a SYSTEM (or whatever PowerDOE calls a SYSTEM) that is a VAV system that allows a RETURN-AIR fan. Make that SYSTEM 100% outside air. Therefore both SUPPLY and RETURN FANS are variable flow, and the RETURN FAN essentially becomes an EXHAUST or RELIEF fan.
You then need to tell the fans what controls their speed, which could be temperature, or a schedule for usage (occupied/unoccupied, etc). If your kitchen SUPPLY fan actually exists, it will have a variable flow over its coils. If all air is entrained into the space (NO SUPPLY FAN), simply set the KW/CFM to zero and any coils it contains to ZERO btu capacity to negate any energy usage from a SUPPLY FAN.
By the way, I believe PowerDOE will give you, in the raw DOE2 reports, all fans individually by SYSTEM consumption. The RETURN FAN will be your EXHAUST FAN.
I believe this will give you a variable speed exhaust. I would like my colleagues in DOE2 cyberspace to confirm my suspicions. Jeff Hirsch, Jeff Haberl, and other lofty scholars, do you think this will give this gentleman his answer?
-----Original Message-----
From: HermesPropylaios@xxxxxxx [mailto:HermesPropylaios@xxxxxxx]
Sent: Friday, January 03, 2003 11:03 AM
To: BLDG-SIM@xxxxxxxx
Subject: [BLDG-SIM] Variable Speed Exhaust
Hi all:
I'm trying to model a variable speed exhaust fan in a kitchen for a large hotel in PowerDOE. I'm not sure how to go about it. If anyone could give me some ideas, or if anyone has done this before, I would appreciate it. Thank you.
John Carioto
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