Masonry Magazine April 1981 Page. 20
SUMMER SUNLIGHT
HEATED AIR
EXHAUSTED
TOP VENT OF THERMAL
STORAGE WALL CLOSED
INSULATED
CEILING
WARM
AIR
SINGLE OR RISES.
DOUBLE
GLAZING
RADIANT
HEAT
MASSIVE BRICK
THERMAL
STORAGE WALL
OPEN VENT
EXTERIOR
AIR DRAWN
INTO THE
BUILDING
DUCT WORK FOR
PRE-COOLING AND
DEHUMIDIFYING
EXTERIOR AIR
Pre-Cooling and Dehumidification
of Exterior Air With
Attached Sunspace
FIG. 7
HEATED AIR
EXHAUSTED
SUMMER SUNLIGHT
OPEN VENT
SOUTH
FACING
GLAZING
OPEN VENT OR LOUVERS
TOP VENT OF THERMAL
STORAGE WALL CLOSED
MASSIVE BRICK
THERMAL STORAGE
WALL
INSULATED
CEILING
OPEN VENT
EXTERIOR
AIR DRAWN
INTO THE
BUILDING
cally in Figs. 6, 7 and 8. This is easily adaptable for
direct gain, attached sunspace and thermal storage wall
cooling systems. The ductwork should be corrosion-
resistant and installed for a sufficient length and at the
appropriate depth to pre-cool the air. The number of
ducts and their length and depth requirements are be-
yond the scope of this Technical Notes because they are
a function of climate, soil type, elevation of ground
water and other related factors, all of which affect the
amount of pre-cooling, both required and attainable.
General design information and calculation procedures
may be obtained from the References 1, 2, 6 and 7 of
this Technical Notes.
Dehumidification
Air may be dehumidified by using the concept shown
in Figs. 6 through 8, for pre-cooling. Dehumidifying the
air with the passive solar system alone can be very
difficult. Again, it is a function of climate, soil type,
level of ground water and other related factors. The
procedure for determining the amount of dehumid-
ification involves fairly complex calculations. These
calculation procedures are similar to those in the
ASHRAE 1977 Handbook of Fundamentals and
ASHRAE Standard 55-74. The temperature fluc-
tuations necessary to saturate air and condensate
water by the natural flow of air further complicates the
use of passive solar cooling systems for providing
dehumidification.
SUMMARY
This Technical Notes provides general information
concerning passive solar cooling systems. In addition
to describing modifications of the passive solar heating
systems which may be used to supply successful pas-
DUCT WORK FOR
PRE-COOLING AND
DEHUMIDIFYING
EXTERIOR AIR
Pre-Cooling and Dehumidification of
Exterior Air With Vented Thermal
Storage Wall System
FIG. 8
sive solar cooling, it introduces an innovative system-
the cavity wall system-which may be quite effectively
used for heating and cooling buildings. The basic con-
cepts of the passive solar cooling systems and the prin-
ciples of their operation are also discussed. The pur-
pose of this Technical Notes is to provide general infor-
mation on passive solar cooling systems with brick
masonry. It discusses type, operation, advantages and
disadvantages of these systems. This Technical Notes
does not and is not intended to provide information for
specific designs or applications, but rather offers gen-
eral information to assist in the consideration of the use
of passive solar cooling systems of brick masonry. The
decision to use the concepts and the design of specific
applications is not within the purview of the Brick In-
stitute of America, and must rest with the designer, or
owner, of any specific project.
REFERENCES
1. Proceedings of the Fourth Passive Solar Conference,
October 3-5, 1979, Kansas City, Missouri, published
by the publishing office of the American Section of
the International Solar Energy Society, Incorpo-
rated, McDowell Hall, University of Delaware,
Newark, Delaware, 1979.
2. Proceedings of the International Solar Energy Society,
Silver Jubilee Congress, Atlanta, Georgia, May
1979, Pergamon Press, Inc., Maxwell House, Fair-
view Park, Elmsford, New York 10523, 1979.
3. Technical Notes 43, Passive Solar Heating with Brick
Masonry, Part I-Introduction, Brick Institute of
America, McLean, Virginia, Mar/Apr 1979.
4. Technical Notes 43A, Brick Passive Solar Heating
Systems, Part II-Sizing Systems, Brick Institute of
America, McLean, Virginia, July/Aug 1979.
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