Z E M C H 2 0 1 2 I n t e r n a t i o n a l C o n f e r e n c e
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Figure 4: Composition of the roof
Concepts of environmental design of Hoi-an Cafe
The Fig.5 shows the design of cross ventilation, sun shading and solar hot water heating
in
Hoi-an Cafe
. Because the cafe’s ceilings on the reverse side of the pond are cooled,
the inside surface temperature of the cafe’s ceiling is lower than the room temperature
for all the day. The roof that consists of five-ply unglazed tiles stores much rain and has
the evaporative cooling effects. These designs keep thermal transmission from the
external surfaces under control. Moreover, the windows consist of a movable louver
double sliding door. Therefore, while solar radiation is blocked, cross ventilation is able
to be ensured. And, wind flows not only in horizontal direction but also in a vertical
direction by the stairwell.
Figure 5: Design of cross ventilation and solar shading
Parking
2F-Cafe
3F-Cafe
Owner’s
Room
Kitchen
Staff
Room
BGF1
BGF2
Pond
River
Stairwell
* BGF: Bio Geo Filter
Water treatment
tank
Roof Terrace
Radiant cooling of ceiling
Double skin brick wall
Local five-ply
unglazed tiles
Movable louver sliding door
Cross ventilation
Vacuum type solar
water heater
