[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [EnergyPlus_Support] Re: Insert exhaust
- To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
- Subject: RE: [EnergyPlus_Support] Re: Insert exhaust
- From: "Jim Dirkes" <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 2 Aug 2011 16:04:32 -0400
- Delivered-to: mailing list EnergyPlus_Support@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 02 Aug 2011 14:05:00 -0600
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoogroups.com; s=lima; t=1312315499; bh=4u0WtRpXeX4h9K/tDUWklgIzKbgwVbzx4syUI4J7Mgw=; h=Received:Received:Received:X-Yahoo-Newman-Id:X-Sender:X-Apparently-To:X-Received:X-Received:X-Received:X-Received:X-Received:X-Received:X-EN-OrigOutIP:X-EN-IMPSID:X-Received:To:References:In-Reply-To:Message-ID:X-Mailer:Thread-index:Content-Language:X-EN-UserInfo:X-EN-AuthUser:X-EN-OrigIP:X-EN-OrigHost:X-Originating-IP:X-eGroups-Msg-Info:From:X-Yahoo-Profile:Sender:MIME-Version:Mailing-List:Delivered-To:List-Id:Precedence:List-Unsubscribe:Date:Subject:Reply-To:X-Yahoo-Newman-Property:Content-Type; b=Mfo0i+2d71HQY6X8MvP1GcKFd++o+vmvFuuwQHJpR63EikaPKUu0Q74Ur0NrLWeYPfde6PgXK0Db+R8iMoxIF3tVmhUnYyBPCUTxtHOUzEDKIYf3i8XU1ATrwZoSPVIa
- Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=lima; d=yahoogroups.com; b=W4Tcrrl6Xjd5GGWyDbQsoLPpW/R0b/GZFwHczIT8UBV6pLgoG0bIt36HWvZXwDECu6L/Fow1LVrxSi4eds2Wvv4v4GwReNHWxAlVS6cdE0El0uE+/k7RhjuWKGoKtafg;
- Envelope-to: linda@xxxxxxxxxxxxxx
- In-reply-to: <j19iou+tjnn@eGroups.com>
- List-id: <EnergyPlus_Support.yahoogroups.com>
- List-unsubscribe: <mailto:EnergyPlus_Support-unsubscribe@yahoogroups.com>
- Mailing-list: list EnergyPlus_Support@xxxxxxxxxxxxxxx; contact EnergyPlus_Support-owner@xxxxxxxxxxxxxxx
- References: <010d01cc5125$ebfbcf90$c3f36eb0$@buildingperformanceteam.com> <j19iou+tjnn@eGroups.com>
- Reply-to: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Sender: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Thread-index: AQIISv8Ntf0AZmBM5ctpbKlU8jHZF5SSBQ9g
Jean,
It is essentially the same as any other fan for flow, pressure rise, efficiency. It is treated differently for the purpose of air / mass balance within a zone. An air loop fan is assumed to provide the same amount of air as it returns, maintaining a mass flow balance.
Keep in mind that you must know the amount of outdoor air that is introduced to each zone as a result of your Sizing, Controller:Outdoor Air or other outdoor air-introducing objects. The Fan:ZoneExhaust extracts air from the zone (only) and E+ ?watches? to make sure that you?ve got an equal amount of air to replace it from your air loop or other sources. If not, it complains with a warning. Actually it normally complains with 100,000+ warnings! The OutdoorAir:Mixer seems to respond nicely to maintain a balance by extracting less air from the air loop when there is an exhaust fan in the zone.
Finally, if your Fan:ZoneExhaust operates at different times than your air loop, including differing schedules or cycling operation of either the exhaust fan or air loop fan, there will be an imbalance in airflow and warnings will result.
The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From:
__._,_.___
Primary EnergyPlus support is found at:
<http://energyplus.helpserve.com>http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
<http://www.energyplus.gov>http://www.energyplus.gov
The group web site is:
<http://groups.yahoo.com/group/EnergyPlus_Support/>http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
<http://geo.yahoo.com/serv?s=97476590/grpId=3387488/grpspId=1705007389/msgId=21263/stime=1312315498>
Your email settings: Individual Email|Traditional
<http://groups.yahoo.com/group/EnergyPlus_Support/join;_ylc=X3oDMTJmb24xMzliBF9TAzk3NDc2NTkwBGdycElkAzMzODc0ODgEZ3Jwc3BJZAMxNzA1MDA3Mzg5BHNlYwNmdHIEc2xrA3N0bmdzBHN0aW1lAzEzMTIzMTU0OTg->Change settings via the Web (Yahoo! ID required)
Change settings via email: <mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx?subject=Email Delivery: Digest>Switch delivery to Daily Digest | Switch to Fully Featured
<http://groups.yahoo.com/group/EnergyPlus_Support;_ylc=X3oDMTJkYmo1anY2BF9TAzk3NDc2NTkwBGdycElkAzMzODc0ODgEZ3Jwc3BJZAMxNzA1MDA3Mzg5BHNlYwNmdHIEc2xrA2hwZgRzdGltZQMxMzEyMzE1NDk4>Visit Your Group | <http://docs.yahoo.com/info/terms/> Yahoo! Groups Terms of Use | <mailto:EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> Unsubscribe
__,_._,___