[Equest-users] [eQuest-users] Simulation problems with infiltration and ventilation for a grocery store at Mexico City

[Mike Hupel]

Since the building is on the first floor of a mid-rise building be sure to
take into consideration the stack effect when calculating the vestibule
infiltration rate.  

 

Best of luck 

 

 

Michael Hupel, B.Tech, CEM, LEED®AP

Senior Mechanical Designer

 

Aegis Engineering Inc.

56 Pennsylvania Ave. Suite 18

Concord, ON L4K 3V9

(905) 761-1264 ext. 24

(905) 761-6949 fax

(647) 702-3316 cell

 

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From: josÿffffffffffe9 luis bermÿfffffffffffadez
[mailto:beralco at yahoo.com.mx] 
Sent: July-24-13 11:45 PM
To: Mike Hupel; equest-users at lists.onebuilding.org
Cc: beralco at yahoo.com.mx
Subject: Re: [Equest-users] [eQuest-users] Simulation problems with
infiltration and ventilation for a grocery store at Mexico City

 

Dear Mr. Hupel:

 

Thank you for your suggestion.  Another point is that the grocery store is
the first floor of a mid-rise building.  Therefore, I cannot place any
rooftop air-conditioning systems.  Any more suggestions will be appreciated.

 

Kind regards,

 

Jose Luis Bermudez Alcocer.


 

  

De: Mike Hupel <mhupel at aegiseng.ca>
Para: 'josÿffffffffffe9 luis bermÿfffffffffffadez' <beralco at yahoo.com.mx>;
equest-users at lists.onebuilding.org 
Enviado: Miércoles, 24 de julio, 2013 14:22:06
Asunto: RE: [Equest-users] [eQuest-users] Simulation problems with
infiltration and ventilation for a grocery store at Mexico City

 

Without looking at the model I can flag a few items for consideration.  The
people load is too high.  ASHRAE 62.1-2010 Table 6-1 has an occupancy
density of 8 people per 1000 ft².  That would put your people load at 74
people not 138.  The infiltration ACH rate is good however if the store has
a vestibule the infiltration rate of the vestibule should be calculated and
modeled.  See ASHRAE vestibule infiltration formula for information.  

 

Hope this helps 

 

 

Michael Hupel, B.Tech, CEM, LEED®AP

Senior Mechanical Designer

 

Aegis Engineering Inc.

56 Pennsylvania Ave. Suite 18

Concord, ON L4K 3V9

(905) 761-1264 ext. 24

(905) 761-6949 fax

(647) 702-3316 cell

 

P Please don't print this e-mail unless you really need to.

 

This message may contain information that is confidential and/or protected
by law.  If the reader of this message is not the intended recipient, you
are hereby notified that any dissemination, distribution, copying or
communication of this message is strictly prohibited.  If you have received
this communication in error, please contact the sender immediately and
delete the message.  Please note that although we will take all commercially
reasonable efforts to prevent viruses from being transmitted from our
systems, it is the responsibility of the recipient to check for and prevent
adverse action by viruses on its own systems.

 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of
josÿffffffffffe9 luis bermÿfffffffffffadez
Sent: July-24-13 3:07 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] [eQuest-users] Simulation problems with infiltration
and ventilation for a grocery store at Mexico City

 

Dear all,

 

I am working with an energy analysis in eQuest of a grocery store at Mexico
City.   The grocery store is a small 9,217 sq.ft. with 138 people (approx)
at the same time (67 sq.ft./person).  The only loads that I am using are
lighting and appliances.  The store is considered as a "dry store".  I am
not placing any big commercial refrigerator for meat.  

 

I have some problems with the infiltration and ventilation. The more I read
about these topics and try to apply the information to the model, the more
confused I get over and over again.  I am not sure if I have introduced the
right data to eQuest.  I used 0.161 ACH for infiltration from the following
source in page 32 (infiltration) in the internal loads for the space
properties:

 

http://www.nrel.gov/docs/fy08osti/42828.pdf

 

I am not sure if I input this in the right place.  The ventilation is
another issue that I do not have any clue.  What should I put and where
should I put it?  These are the only problems, with my limited experience,
that could be causing some problems.    I am attaching the INP and the PD2
files plus an AutoCAD file, because I drew the floorplan and imported it to
eQuest.  Please, any help will be greatly appreciated.

 

Kind regards,

 

Jose Luis Bermudez Alcocer.

 

 

 

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