COOLTEK

Hello everyone and welcome to
COOLTEK
a home with a mission
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What we needed to achieve was
the right
Comfort zone
- too hot, is uncomfortable
- with high humidity, its worse
Comfort zones
Dry heat
Too warm
Sultry
Too dry
JUST RIGHT
Too humid
Keen
Too cold
Raw
Temperature
24 o C
18 o C
40%
70% Relative humidity
The right
-
Comfort zone
Temperature of 18oC to 24oC
(24oC is most energy efficient for cooling)
- Humidity between 40% to 70%
(air conditioning removes the humidity)
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The five main design features
of COOLTEK are:
1.
2.
3.
4.
5.
Orientation
Insulation
Ventilation
Protection
Investigation
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COOLTEK Orientation
•
•
East & West facing walls are small,
have no windows and are sheltered
from the Sun by vegetation
Windows in South & North facing walls
let light in but no direct heat from
the Sun
COOLTEK orientation
Setting
sun
Windows here
and here
Rising
sun
N
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COOLTEK Insulation
•
All walls are load bearing and built with
autoclaved lightweight concrete blocks, six
times more efficient that standard clay
bricks
Laying ALC blocks
Load bearing walls
Blocks laid with
2mm thin adhesive
Completed walls with lintels
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COOLTEK insulation
• Lightweight aerated concrete walls
• All windows and doors have double
panes of glass with a low Emissive
coating on one side of one pane and
the gap between the panes filled with
Argon gas
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Window installation
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COOLTEK insulation
• Lightweight aerated concrete walls
• Double glazed windows and doors
• High quality reflective foil laid under
the roof
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Parsec reflective foil laid
below roof cladding
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COOLTEK insulation
• walls
– lightweight aerated concrete blocks
• windows and doors
– double glazed with low E, argon filled
• under the roof
– high quality reflective foil
• above ceiling
– 50mm high density rock wool
Insulation arriving
Above ceiling insulation
COOLTEK insulation
• walls
– lightweight aerated concrete blocks
• windows and doors
– double glazed with low E, argon filled
• under the roof
– high quality reflective foil
• above ceiling
– 50mm high density rock wool
• below floor
– 50mm polyurethane
Polyurethane
PU laid
Flooring being laid
COOLTEK ventilation
• Input
– underground cooling chambers
• Output
– solar chimney
COOLTEK ventilation
Hot air is expelled
via t he solar chimney
House floor level
Cooling chambers
Input pipes
COOLTEK ventilation
• underground cooling chambers
– fresh, filtered air from below ground at
a constant temperature of 26oC
Soil import
Soil infill
Footpad
Beam formwork
Finished slab
Output pipe in slab
Vent pipes build
Inlet pipes being laid
Cooling chamber baffles
Cooling chamber lids
COOLTEK ventilation
• underground cooling chambers
– fresh, filtered air from below ground at
a constant temperature of 26oC
• thermal chimney
– stale, warmer air expelled at opposite
end of building
Chimney start
Chimney above roof
Thermal chimney
Hot air exhaust from
Main Living area
15o pitch
1.500m
Hot air exhaust
from wet kitchen
Fridge/freezer
Wet kitchen
Entrance
Low level
venting grill
Ground level
Hot air exhaust
from condenser
Ventilation output
COOLTEK protection
• white roof
Trusses complete
Roof almost complete
COOLTEK protection
• white roof
• wide roof overhang
Roof overhang
COOLTEK protection
• white roof
• wide roof overhang
• white walls
White walls
COOLTEK protection
•
•
•
•
white roof
wide roof overhang
white walls
windows inset
Inset windows
COOLTEK protection
•
•
•
•
•
white roof
wide roof overhang
white walls
windows inset
surrounding vegetation
Surrounding vegetation
COOLTEK investigation
• Multi-split air con with R410A
refrigerant
• Lighting
– low energy bulbs or
– electronic fluorescent tubes
Multi split
air con unit,
with R410A
refrigerant
COOLTEK U values
Ceiling
1.15 (5.6)
0.71 (2.78)
Windows
Walls
0.52 (3.34)
Floor
0.35 (4.6)
Cooltek U values in Blue
Standard Malaysian in Red
COOLTEK friends
Praying mantis
Fivebar swordtail
Whose golf course is this?
Leonard
the lizard
Large tailed nightjar
Stork billed kingfisher
Spectacled langur
Dusky leaf
monkey
Thank you and
any questions