[BLDG-SIM] Convective loop in passive solar building

[I.G. Theaker]

Hi, Severin & other Bldg-Simmers,

By "non numerical" I assume you mean not computer-simulated?  I'd say it's
impossible to do any reasonable airflow design without some
number-crunching....

The venerable Duffie & Beckman's chapter 14 offers some guidance on "Trombe
wall" type collector design:
"Solar Energy Thermal Processes" (ISBN: 0-471-22371-9)

For more detailed aid with the calcs, and natural ventilation/cooling in
general, check out Baruch Givoni's books:
"Climate Considerations in Building and Urban Design" (ISBN: 0-471-29177-3)
"Passive and Low Energy Cooling of Buildings" (sorry, no ISBN; my copy was
lent & not returned - gnashing of teeth....)
"Man, Climate and Architecture, 2nd Edition" (ISBN: 0-85334-108-7)
Givoni has done decades of empirical research on full scale building
airflows at the University of Haifa; and developing simulation routines at
Haifa and UCLA.  *Excellent* texts, both non-numeric (in the form of clear,
simple graphics) and with the numbers/equations.

Another classic:
G. Z. Brown, et al
"Sun, Wind & Light: Architectural Design Strategies, 2nd Edition" (ISBN:
0-471-34877-5)


Be aware: at residential scales, convection-driven ("stack-effect") air
pressures are usually much smaller than wind-induced air pressures; so you
must have a *very* airtight building to ensure it operates as you intend.
Better to design for combined wind-stack airflows.


Good luck!
Ian Theaker, P.Eng.

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----- Original Message -----
From: "STAUFFER Vincent" <geres.stauffer at free.fr>
To: <BLDG-SIM at gard.com>
Sent: Friday, January 25, 2002 1:11 AM
Subject: [BLDG-SIM] Convective loop in passive solar building


Hello,

in order to developp a bioclimatic building in Ladakh, we are looking for
information about convective loop.

The building we try to design should have two storeys and one sunspace on
its south face. We already have information about convective heat transfer
inside passive solar buildings thanks to publications issued from the Los
Alamos National Laboratory. However these documents were published on 1985
and they only provide major principles and data providing from few examples.

Does anybody know one non numerical method to design convective loop, or a
document which could be used as a reference on this subject?

Thanks,
Séverin POUTREL.


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