[Trace-users] Trace-users Digest, Vol 4, Issue 1

[Tony Kriel]

I prefer using the ventilation schedules that follow occupancy patterns.  It
is, "The simple" way to model DCV, and almost the same thing (I believe).  

As far as the reduction in fan energy, I'm almost certain you would reduce
the fan energy if you put a VFD on the fan type.


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Today's Topics:

   1. Demand Control Ventilation in TRACE (Eric Wilson)


----------------------------------------------------------------------

Message: 1
Date: Mon, 7 Jul 2008 14:23:21 -0500
From: "Eric Wilson" <eric at sedac.org>
Subject: [Trace-users] Demand Control Ventilation in TRACE
To: trace-users at lists.onebuilding.org
Message-ID:
	<904a636e0807071223p55864b0fk1b061f2259f7189b at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

There are two ways to model DCV in TRACE:

   1. Using ventilation schedules that follow occupancy patterns.
   2. Using the CO2-based DCV option on the "Systems" tab, "Advanced" button
   and setting CO2 sensors to "Room" on the Rooms tab.

I'm curious which method of modeling DCV you all have found to be more
accurate or preferable.  It appears that neither method automatically takes
fan energy savings into account--as far as I know, this must be done
separately using a fan schedule.  Using "Cycle with occupancy" doesn't quite
seem to be what we want to model DCV fan energy.  Any ideas?


*Eric Wilson*
Smart Energy Design Assistance Center
University of Illinois - Urbana-Champaign
www.sedac.org
(217) 244-4671
(800) 214-7954
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