[Bldg-sim] FW: insulation hot humid climates
Paul Grahovac
paul.grahovac at prosoco.com
Thu Feb 25 11:31:06 PST 2010
Aushim
<http://en.wikipedia.org/wiki/File:Solarchimney.jpg>
You might consider a solar chimney.
http://en.wikipedia.org/wiki/Solar_chimney
You would want to minimize air leakage in the building envelope to
maximize the draw of cool air from underground.
I think I've seen configurations where there is no actual chimney, but
rather a chimney effect is realized by a vent located in the top of the
wall across the room from the vent from the underground. (Same as shown
above, but with no actual chimney constructed on the outside of the
building.) Since you will have a metal roof, you should have a lot of
hot air at the ceiling that will ventilate when the cool air vent is
opened on the floor thus cooling the room.
Paul Grahovac, LEED AP
Product Manager
R-GUARD Air & Water-Resistive Barrier
PROSOCO, Inc.
3741 Greenway Circle
Lawrence, Kansas 66046
(785) 830-7355
(888) 376-3417 fax
pgrahovac at prosoco.com
web site http://www.prosoco.com/
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of P. Hay
Sent: Thursday, February 25, 2010 12:50 PM
To: 'Bldg-Sim'
Subject: [Bldg-sim] FW: insulation hot humid climates
Subject: RE: [Bldg-sim] insulation hot humid climates
Hello Aushim,
I suspect Bangladesh has a tropical monsoon climate, which I don't have
any information for. But, prescriptive requirements for the tropical
island location of Kingston Jamaica are as follows:
WALLS: No. insulation, if solar absorptivity < 0.7
WINDOWS: clear glass with internal blinds, Window-to-Wall ratio
< 0.35
ROOF (metal): (a) No skylights, U-value = 0.12 Btu/hr-sq-ft-degF,
solar absorptivity < 0.7; or
(b) Skylights with U-value = 0.8
Btu/hr-sq-ft-degF, 2% of roof,
opaque roof U-value = 0.09 Btu/hr-sq-ft-degF, solar absorptivity < 0.45
Best regards,
Paul Hay BA(Arch.), Dip(Bus. Admin.)
Managing Partner
PAUL HAY Capital Projects
Strategic Facility Planning and Implementation
P. O. Box 3367
Kingston 8
Jamaica, W.I.
tel: 1 (876) 756-0631
cel: 1 (876) 324-4274
fax: 1 (876) 756-0631
web: www.phcjamaica.com
e-mail: paul.hay at phcjamaica.com
skype name: phcjam
profile: www.linkedin.com/in/phcjam
twitter: www.twitter.com/phcjam
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of leen
peeters
Sent: Monday, February 22, 2010 04:20 AM
To: bldg-sim at lists.onebuilding.org
Cc: Aushim Koumar
Subject: [Bldg-sim] insulation hot humid climates
Dear all,
for a student project, we are studying the options for improving the
thermal comfort in a hospital located in Bangladesh. The aim is to use
as much cheap and local materials as possible.
They currently use simple metal non-insulated constructions. We will go
there and build a extension to an existing hospital. The idea is to use
bricks for the walls, wooden doors and single glazing. However the roof
remains in metal. We have a small budget for improving the indoor
climate, however have no experience in insulation in these climates.
We would appreciate anyones help; references to reports, publications or
some usefull advice.
Kind regards,
Aushim
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