uponor solutions for radiant cooling
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Uponor solutions
for radiant cooling
Uponor International SalesDietmar Hennig
October 2009
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Radiant cooling
Principles and thermal comfort
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Operative temperature
The temperature people feel isan average of the airtemperature in a room and theradiant temperature from thesurrounding surfaces.
I f the floor temperature is e.g.18°C and the roomtemperature 26°C people will
feel it as 22-24°
C.
With a radiant cooling systemthe room temperature can beincreased compared to an air
conditioning system.1 deg. higher room air temperatureresults in savings of approx. 6% of primery energy.
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Compared to air conditioningsystems radiant coolingcreates no air turbulences dueto the very low convection
share in heat transmission.
No unhygienic dust anddraught occurs.
The cooling output is equal allover the cool surface.
Therefore Uponor radiant
cooling solutions support ahealthy and comfortable roomclimate
Air turbulences
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12 14 16 18 20 22 24 26 28 30
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16
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Air-temperature [°C]
R a d i a t
i o n t e m p e r a t u
r e [ ° C ]
Zone of thermal comfort
with UFC
w ithout UFC
zone of thermal comfort by P.O. Fanger
With radiant cooling system the room temperature can beincreased by approx. 2K
Comfort
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Cooling load
There are 2 components of cooling load in rooms:latent and sensible load
The Sensible Load is the temperature component, the Latent Load
is the humidity portion.When moisture laden air passes over a cold surface, the airtemperature drops below the "dew point" which causes the moistureto condense. The air has then been cooled and some of the moistureremoved. Just as it takes ~ 2,3 kJ to vaporize one gram of water (the
Latent Heat of Vaporization), for every gram of water vaporcondensed, 2,3 kJ heat are given up.
Typically, latent loads are at least 30% of the total cooling load.Higher in some applications and humid climates.
The latend load has to be compensated w ith air conditioning systems.
The sensible load can be compensated w ith Uponor radiantcooling systems, reducing the size of the air conditioning system
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Radiant cooling
Energy saving
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Energy transfer by water
1 l of water can transferthe same amount of energy than 3,5 m³ of air
or
a ¾” pipe can transfer asmuch energy as a 14” round duct.
Pumping fluids asopposed to moving aircan reduce the point-to-point transfer costs by as
much as 95% on a BTU-to-BTU basis.
1 l water
3,5 m³ air
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Energy transfer by water
To remove 1 kW of cooling load from a room w ith
Air conditioningsystem
(∆
T=10 K)
Radiant coolingsystem
(∆
T=3 K)
Flow rate, m³/ h 300 0,29
Ventilator / pumppower, W
140 0,3
% of cooling output 14 0,3
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Uponor floor cooling solutions are not air-conditioningsystems
andcan not be used for controlling humidity in buildings,
but
the air change rate in rooms can be reduced to minimumvalue required for hygienic reasons and dehumidification
what
reduces costs for air conditioning channels, equipment,operating and maintenance.
Radiant cooling & air conditioning
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Uponor solutions
for radiant cooling
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You can solve your cooling problems this way… .
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… or use Uponor solutions for radiant cooling
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Uponor solutions for radiant cooling
CeilingCooling
WallCooling
FloorCooling
Comfort panel
Plas ter ed cei l i ng
lightweightsystem
clamp track
system
different floorcooling systems
high cooling output
fast reaction surface
for renovation
and single houses
high cooling output
fast reaction surface
for renovation andnew build
less cooling output
for floor tempering
UFH/ UFC combination
ThermallyActivatedBuildingSystems
Concrete coreactivation
Thermally
activatedsurfaces
cover basic coolingload
high energy efficiency
fast reaction surface
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Radiant floor cooling
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Two pipe materialsfor individual
fixation systems
Uponor floor cooling systems
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Uponor MLC pipes
Pipe material PE-RT according to DIN 16833
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MLC - advantages
Excellent long run behaviour
• No incrustation
• Corrosion resistant
• Low thermally expansion
• Absolutely oxygen diffusion tight
• Low weight
• High form stability
• Bending flexibility
Uponor MLC pipes
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Uponor PE-Xa pipes
Cross linkedpolyethylenePE-Xa
Hightemperatureand pressureresistance
robust onbuilding site
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PE-Xa - material characteristics No incrustation
Corrosion and abrasionresistant
High chemicalresistance
Oxygen diffusion tight
Thermal memory effectBending flexibility
Low w eight
High crack resistant atlow temperatures
Excellent long–runbehaviour
Uponor PE-Xa pipes
fl l
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Whet system (screeded)
mainly for new buildings
Dry system (no screed)
mainly for renovation
Uponor floor cooling systems
U i h l h
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Diffusion tight Uponor pipesfixed on reinforcementmeshes - easy to install andadapt to room layout
Uponor system w ith steel mesh
U t ith t l h
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Uponor system w ith steel mesh
U t l t
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Uponor stapler system
Diffusion tight Uponorpipes fixed by staples on
insulation roll w ith texturefoil - easy to install andadapt to room layout
Sound insulation already
includedNew buildings
U i iti i l
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Diffusion tight Uponorpipes fixed on special foilelements which protect
pipes from damages onconstruction site
Uponor pipe positioning panel
U i iti i l
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Uponor pipe positioning panel
U hi h f l
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Small diffusion-tightUponor PE-Xa pipes fixed
on special foil elements
Can be installed on “old” floor screed, ideal forrenovation
Uponor high performance panel
Upono high pe fo mance panel
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Uponor high performance panel
Please note that special screed needed.
Uponor lightweight system
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Uponor lightweight system
Diffusion tight Uponorpipes fixed in groves incooling emission plates,integrated in insulation
panels
For cases where no screedsystem can be used
renovation
Cooling output
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26°C
qK≈
40 ... 20 W/ m²
Cooling output
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Radiant wall cooling
Uponor wall cooling
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Uponor wall cooling
Uponor lightweight system
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Diffusion tight Uponor pipes
fixed in metal cooling emissionplates which are integrated ininsulation panels
Uponor lightweight system
Uponor plastered system
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Diffusion tight Uponor pipesfixed w ith clamp tracks on thewall and plastered
Uponor plastered system
Cooling output
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qK ≈
55
W/m²
Cooling output
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Radiant ceiling cooling
Uponor Comfort Panel
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Replacement of oldceiling by Uponorcomfort panel
Uponor Comfort Panel
Uponor Comfort Panel
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Easy installation
• Replace old panels in theframework
• Connect panels together tosections w ith push fittings
• Connect section to suply/ returnlines e.g. Uponor MLC pipes
Uponor Comfort Panel
Uponor plastered ceiling
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Uponor plastered ceiling
Small Uponor pipesinstalled on the ceilingw ith and covered withplaster
Individual roomtemperature controlpossible
Cooling output
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Cooling output
26°C
qK ≈
50 ... 90 W/ m²
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Uponor TABS
Thermally Activated Building Systems
TABS thermally activated building systems
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Pipes are integrated in theslabs of the buildingconstruction
The thermal mass of
concrete slabs can absorbcoldness during night-timeand utilise heat load duringday-time
Covering of basic coolingloads
TABS thermally activated building systems
General working principle
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General working principle
Uponor TABS
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Uponor PE-Xa pipes areintegrated in the slabconstruction for cooling
the building structure
Uponor TABS
Cooling output
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qK ≈
5 ... 20 W/ m²
qK ≈
40 W/ m²
Cooling output
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References
Uponor radiant cooling solutions
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• Office buildings• Museums• Libraries• Banks
• Schools• Hospitals• Showrooms• Airports
Uponor radiant cooling solutions
Ecobox, Madrid Offices
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Uponor’s invisible radiant cooling is a state-of-the-art systemthat forms an integral part of the design of buildings and theirperformance. I t represents a commitment to the future thatguarantees the optimisation of energy consumption and
maximum comfort.
,
BMW World Munic
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Providing full architectural freedom
BMW World Munic
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• 16.500 m² of floor, glass and steel,architecture in the BWM museum
• 5,000 m² of Uponor industrial radiantcooling and heating with PE-Xa pipesintegrated into the hall floor =massive invisible cooling or
heating panel• Full architectural freedom provided:
An experience which appeals to allsenses, allowing visitors to experiencethe fascination of mobility
• Energy-saving and environmentallyfriendly operation
Art Museum Bregenz, Austria
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“Due to the useof Uponorradiant cooling,the ventilation
system’s sizecould bereduced by afactor of 8.”
t useu ege , ust a
Air condition systemw ithout Uponor radiantcooling system
~ 24.000 m³/ h
w ith Uponor radiantcooling ~3.000 m³/ h
Reem Emirates Aluminium Abu Dhabi
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Reem Emirates Aluminium Abu Dhabi
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Radiant floor coolingin office buildingw ith support bychilled beams if
necessary.
The system is istalledin combination w ith
active cooled facadeelements from REA.
Bangkok International Airport
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g p
150.000 m² floor cooling w ithUponor PE-Xa pipe system,combined w ith displacementventilation
The world’s largestapplication of surface cooling
= size of 20 football fields
30 million passengers peryear
Floor surface temperature
approx. 21°C, temperature of
occupied zone approx. 20 °C
Special solar shading system
Bangkok International Airport
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Bangkok International Airport
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27°C operative
temperature inside
21°
C floor temperature
Bangkok International Airport
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“Without applying the active floorcooling surface temperatureswould reach more than 30°C. Thiswould result in the breaking
down of all air layers inside thebuilding.
As a consequence, the ventilationsystem‘s capacity and output
would have to be increasedconsiderably which for a buildingof that size is not applicable“