Hi,
you have to be very careful when using blower door test results as the infiltration rate in simulation models.
As you said, the test is done with 50Pa pressurized building. That will never be the case during the operation of a building.
You could probably use the European Standard DIN-EN 832 which basically suggests to multiply the n50 value by 0.07 to get the infiltration value for the non-preassurized building.
BR, Florian
FLORIAN STIFT
Junior Engineer
Energy Department
Sustainable Building Technologies
AIT Austrian Institute of Technology
Österreichisches Forschungs- und Prüfzentrum Arsenal Ges.m.b.H.
Giefinggasse 2 | 1210 Vienna | Austria
Austria: T +43 50550-6277 | M +43 664 815 79 46 | F +43 50550-6613
Singapore: M +65 837 59 1 59
florian.stift@xxxxxxxxx | http://www.ait.ac.at/
FN: 165088b HG Wien | UID: ATU46577208 This email and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient, please notify the sender by return e-mail or by telephone and delete this message from your system and any printout thereof. Any unauthorized use, reproduction, or dissemination of this message is strictly prohibited. Please note that e-mails are susceptible to change. Österreichisches Forschungs- und Prüfzentrum Arsenal Ges.m.b.H. shall not be liable for the improper or incomplete transmission of the information contained in this communication, nor shall it be liable for any delay in its receipt.
Von: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Im Auftrag von beslitl
Gesendet: Freitag, 13. April 2012 09:37
An: EnergyPlus_Support@xxxxxxxxxxxxxxx
Betreff: [EnergyPlus_Support] blower door test result
Hi all,
Has anyone ever used the whole house blower door test result for energy plus inputs?
I have 3835CFM@50Pa which is 20.5ACH@50Pa, but the depressurized test was done for entire house, not for each zones.
I'm not sure if I can assume each zone has 20.5ACH as leakage and input this value into 'Air Changes per Hour' parameter of 'ZoneInfiltration:DesignFlowRate ', and leave rest of that as blank.
I know this will ignore many realistic conditions such as wind, height of the zone or schedule of the activities and so on, but if you can recommend me simple usage of the testing result from the actual site to simulate the energy model in energy plus, then that will be very helpful.
thank you
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
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.
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___