aquaheat radiant cooling - comfortpro systems
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AquaHeat
www.ComfortProSystems.com
Radiant Heating and Snowmelting products AquaHeat
AQUAHEAT Radiant Cooling
A systems approach to integrating radiant cooling of ceilings, floors and walls
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AquaHeat
www.ComfortProSystems.com
Advantages Why we kept trying to build a better system
Superior Comfort Radiant heat is absorbed by objects
Aesthetics Architectural feature not HVAC component
Flexibility Lay-in, drywall, soffits, and floors
Durability Not easily bumped, scratched, or damaged
Silent No mechanical equipment in conditioned space
Heat Transfer Principles
ConductionMineral based excited molecules excite molecules nearby there-by transferring energy
Convection Air movement past warmer or cooler object adding or removing heat
Radiant Electromagnetic waves straight lines absorbed by colder objects that reradiate to other cold objects
Radiant Cooling Systems
Radiant Cooling Systems
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AquaHeat
www.ComfortProSystems.com
Radiant Cooling Systems
Passive Chilled Beam
Similar to panel no air circulation. Falling cold air creates slight negative pressure above drawing in heated air.
Active beam utilizes external forced air and ventilation systems to remove sensible load.
Active Chilled Beam
Chilled Beam Terminology
*Energy transfer from one object to another by electromagnetic waves.*Sensible load removal only.*Latent load must be addressed through ventilation or dehumidification.*Can be any emissive surface- ceilings are best to take advantage of natural stratifi-cation.*Good for solar gain, machinery heat, data servers.*10 to 50 BTU per square foot removal
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AquaHeat
www.ComfortProSystems.com
Radiant Cooling SystemsTraditional Ceiling Panel
In heating mode the radiant energy vectors travel in direction shown. In cooling mode radiant energy is absorbed by cooler panel..
Gold Propanel Sunfoam Propanel
Radiant Cooling Systems
Radiant floor systems typically require a separate system for cool-ing altogether. “With ceiling panels, there is no redundancy, In the wintertime we push warm water through the radiant panels and in the summer time, through those same tubes, we push chilled water.
Ceiling applications allow con-struction to progress on the floor. In typical radiant floors, there is an ongoing fear of puncturing the tubes during construction before the flooring material is laid.
The temperature of the liquid in the ceiling can be hotter or colder than on the floor, where extreme highs or lows can make the flooring uncomfortable to walk on.
“With radiant floor cooling, you can’t have those types of temperatures which are necessary in North America to be able to handle the cooling loads,
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AquaHeat
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Radiant Cooling Systems
1/2" PEX 300' Loop 1 GPM 9' TDH5/8" PEX 300' Loop 1 GPM 6' TDH
Radiant cooling can only satisfy green and yellow conditions
Pump Model Maximum1/2” Loops Sq. Ft.
Capcity 10 Deg.T
30 BTU Sq, Ft.
Maximum 5/8”
LoopsSq. Ft.
Capcity 10 Deg.
T30 BTU Sq,
Ft.Armstrong 30/30gaAaaaa 5 750 22500 12 1800 54000
B & G NRF-22 8 1200 36000 14 2100 63000
Grundfos UP15-42 9 1350 40500 14 2100 63000
Grundfos UP15-58 9 1350 40500 14 2100 63000
Taco 007 4 600 18000 10 1500 45000
“Water flowing through a floor would need to run at temperatures between 46 and 55 degrees to handle our cooling loads in this climate."
Furniture and carpets don't obstruct radiant output on the ceiling like they do for floor installations.
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AquaHeat
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Commercial Cooling Systems
Radiant Cooling Systems
Cooling panels must stay above dew point to avoid condensation 55-60 degrees.Sensible / Latent ratio 2 to 1 – 60 to 70 percent of cooling load can be removed with radiant, remaining with DX
Commercial Cooling Systems Radiant cooling systems operate by reducingthe surface and air temperature within a space,which is referred to as “sensible cooling.” “Latentcooling” occurs when the heat content of air isreduced through condensation of the air’s vaporon a cool surface. To avoid condensation onradiant cooled surfaces, latent cooling should beprovided by a supplemental forced-air cooling and/or dehumidification system. The use of radiantsurfaces for sensible cooling combined withdedicated outdoor air systems for latent coolingand ventilation has shown great promise for energysavings. In fact, an article in the ASHRAE Journalprojected more than 50% savings for a radiantcooled slab and dedicated outdoor air systemversus a standard constant air volume coolingsystem.173.6.1