Wiley & Sons Publisher, Chap 2.10 - Beam and Diffuse Components of Hourly
Radiation (taken from Erbs et al):

I_d / I = 1.0 - 0.09 * k_t for k_t <= 0.22
= 0.9511 - 0.1604 * k_t + 4.388*k_t^2 - 16.638*k_t^3 +12.336*k_t^4
for 0.22 < = k_t <= 0.8 = 0.165 for k_t > 0.80

where:
I_d / I = diffuse fraction of hourly total horiz radiation
k_t = hourly clearness index

You should read the section before you apply this. Your engineering library
should have a copy. If not, let me know and I'll fax you a copy.

Good luck.

- Jim

________________________
Jim Kelsey P.E.
KW Energy Engineering
175 Filbert Street, Suite 205
Oakland, CA 94607-2541
510.834.6420
http://www.kw-energy.com

--

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM

From bogus@does.not.exist.com Wed Mar 16 13:13:09 2011
From: bogus@does.not.exist.com ()
Date: Wed, 16 Mar 2011 20:13:09 -0000
Subject: No subject
Message-ID:

P.Voit, Th.Lechner, and M.Schuler, and titled, "Common EC validation =
procedures for dynamic building simulation programs -- application with =
TRNSYS".

An acquaintance of mine in Japan is looking for it, and I said I would =
see if I could locate it. I haven't been able to find it by searching =
the web.

Thanks.

Larry D.

*************************************************************************=
****
Larry O. Degelman, P.E., Professor e-mail: larry at taz.tamu.edu
Department of Architecture Phone: +1-979-845-1891
Texas A&M University Fax: +1-979-862-1571
College Station, TX 77843-3137
Download ENER-WIN at: http://taz.tamu.edu/~energy/enerwin.html
*************************************************************************=
*****

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM
------=_NextPart_000_004A_01BFB9C6.C91198A0
Content-Type: text/html;
charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM

------=_NextPart_000_004A_01BFB9C6.C91198A0--

From bogus@does.not.exist.com Wed Mar 16 13:13:09 2011
From: bogus@does.not.exist.com ()
Date: Wed, 16 Mar 2011 20:13:09 -0000
Subject: No subject
Message-ID:

There is a new installation password for Beta 5 which will be sent
automatically after you fill out the registration form on the web
site (to the email address you enter on the registration form). You
may download the setup file prior to receiving your password, but you
will not be able to install until you get your password.

Highlights of Beta 5.0 include:

* Phase I Energy Meter reporting

* Low Temp Radiant Heating/Cooling

* Interior Surface Convection (see Inside Convection Algorithm input
description)

* Thermal Comfort Options (see People input description)

* Evaporative Cooler Models

* Steam Absorption Chiller

* Air Flow Sizing (based on Zone requirements)

* Improved Sky Model for Daylighting Calculation

* Ability to read multiple interval per hour weather data files

* Plenum Implementation

* Return air heat gain (from lights) enhancement calculation

* Flat Plate Exhaust Air Heat Recovery

* IFCtoIDF generation capability

This is the fifth beta release prior to EnergyPlus V1.0 release.
There will be multiple Beta 5s released prior to the V1.0 release.
Additional Beta 5 releases will include new features as well as
corrections as necessary. The password will remain the same for all
Beta 5 releases.

Ther remaining Beta release schedule is:

* Multiple Beta 5 releases - February 2001 - March 2001

* V1.0 Release - April 09, 2001

Thanks for your participation!

The EnergyPlus Development, Testing, and Support Team

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM

From bogus@does.not.exist.com Wed Mar 16 13:13:09 2011
From: bogus@does.not.exist.com ()
Date: Wed, 16 Mar 2011 20:13:09 -0000
Subject: No subject
Message-ID:

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

AIR-CONDITIONING CREDITS

Specific air conditioning credits vary substantially from case style to case
style. Case loads are made up of internal electric loads, radiant heat from
exterior lighting (very substantial on top display cases), wall conduction
and the infiltration load which is a combination of sensible and latent
heat. Manufacturers also usually add some percentage for safety to account
for loading techniques, traffic, warm product and times of poor ambient
control. It would not be practical to try and exactly calculate the credit
for each style of case and its application. A general rule is acceptable
that takes into account the mix of cases in a typical store since the air
conditioning calculation itself is partly an educated guess particularly
considering outside air influences and person loads.

Only open cases should be considered for this calculation. Walkin coolers
and freezers and glass door merchandisers should not be used. The following
credit is then usually acceptable and should be calculated using the total
published open case load.

sensible credit = 40%
latent credit = 30%

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

Can someone comment on the disparity between the above numbers and the
respective 65%-10% credits in DOE2.1E?
Also, should it be understood that closed cases should not be considered as
zone loads in a DOE2.1 simulation?
Has anyone had trouble using the REFG-SENS-SCH and REFG-LAT-SCH commands?
The results I get with or without schedules are identical.

Thank you again for your help.

Dominique Michaud
Building Energy Technician
Dessau-Soprin Inc.
375 blvd Rolland-Therrien, Suite 400
Longueuil, Quebec, J4H 4A6
Tel.: (514) 281-1033 ext 2568
Fax: (450) 442-9996

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM

From bogus@does.not.exist.com Wed Mar 16 13:13:09 2011
From: bogus@does.not.exist.com ()
Date: Wed, 16 Mar 2011 20:13:09 -0000
Subject: No subject
Message-ID:

REFG-ZONE-LOAD is the total cooling effect...

Manufacturers of supermarket cases usually do not
list the
total cooling effect of their cases directly.
Instead, they list the
compressor capacity at a standard suction
temperature
required per lineal foot of case work. The sensible
cooling effect
is typically 65% of this number, and the latent
cooling effect is
about 10%. The total cooling effect is then about
75% of the
listed compressor capacity per lineal foot,
multiplied by the
lineal feet of case work.

Does this mean that 75% of the compressor's cooling capacity cools the zone?
Where does the other 25% disappear to?
Do these figures vary depending on ambient conditions?
Are there any references for these numbers (ASHRAE or otherwise)?

Any and all help is greatly appreciated.

Dominique Michaud
Building Energy Technician
Dessau-Soprin Inc.
375 blvd Rolland-Therrien, Suite 400
Longueuil, Quebec, J4H 4A6
Tel.: (514) 281-1033 ext 2568
Fax: (450) 442-9996

======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM

From bogus@does.not.exist.com Wed Mar 16 13:13:09 2011
From: bogus@does.not.exist.com ()
Date: Wed, 16 Mar 2011 20:13:09 -0000
Subject: No subject
Message-ID:

John Andrews, PE