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Advanced Ergonomic Technologies - AET
AET are leading experts in commercial office underfloor air
conditioning systems, having advised and overseen the installation
of over 65 million square feet throughout the world in a wide
variety of climatic conditions and cultures. AET's Flexible Space System, a
modular, standardised system has been the clear UK market leader for
a number of years and has a proven track record in use. With today’s
emphasis on reducing energy usage wherever possible, AET have now
added an all-air free cooling underfloor system called PleinAir to
their range. This variable air volume system includes a ground
breaking modulating damper to overcome the problem of the lack of
air circulation traditionally associated with VAV systems.
What is Underfloor Air Conditioning?
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Sometimes called UFAD, underfloor air
distribution utilises the space beneath raised access flooring
(plenum), very often, but not exclusively in commercial office
operations
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Air is supplied at floor level & may return
either through the floor or at high level
Why Choose Underfloor Air Conditioning?
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Only a very small increase in the space for
the distribution of power, data & telephones beneath the raised
access floor is necessary for inclusion of air distribution, so
making more efficient use of the building’s volume
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Height saving over ceiling based systems
either in refurbishment or new construction because of the
reduced need or even abolition of ceiling ducting
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Comfort levels are high with easy resolution
of any draught or overheating issues
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Flexibility is ensured as air delivery is
made through easily relocatable raised access floor panels
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Tax advantages are realised as the floor
system may be classed as Plant & Equipment, so attracting
improved Capital Allowances
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Floor-based components are easily to fit
retrospectively in Shell & Core scenarios in a raised floor
void, so saving initial capital expenditure
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Architectural freedom in the ceiling is
guaranteed if there is no need for ceiling ducting
Operation of the Original Flexible Space System
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Floor standing, super quiet air handling
units serve zones of 100-300m˛
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Silicone coated baffle material separates the
supply & return plena
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Treated air is delivered into the supply
plenum
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Fan-assisted terminals supply air from the
plenum into the space above
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They are connected only by power & data
cabling – there are no ducts
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Local control may be tempered by centrally
set parameters
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Adjacent users may control both airflow &
temperature
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The system also facilitates central
monitoring & control
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Spent air is drawn back into the return
plenum through grilles in the floor
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Optional ceiling-return systems are available
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Fresh air is introduced into the return air
path
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Air is cooled or warmed at the AHU by water
delivered from central plant
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Riser requirements are minimal
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Remote control optional
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Anodised aluminium grilles are rectangular in
shape
Operation of the New PleinAir System
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Pressurised air may be supplied to the plenum
by central plant or local air handling units
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100% free cooling using central station air
handling units
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Air is returned at high level
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In cooling mode, passive tile units (PTUs)
deliver air into the workspace
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PTUs have a unique time modulated air damper
for excellent throw
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In heating mode, a fan-powered hot water or
electrical unit heats recirculated office air
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Options for cooling only or heating/cooling
PTUs available
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Wide variety of grille configurations,
colours & shapes
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Both variable & constant volume tile units
are available
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Local PTU control is an option
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PTU connected only by power & data cabling –
there may be minimal ductwork in the plenum
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Bacnet IP controls
AET would be delighted to discuss the comparisons
and advantages of either the Flexible Space or PleinAir systems for
your project.
Request information:
Hiross AET
Underfloor Air Conditioning
Request information:
Above
Advanced Ergonomic Technologies Demountable Office Partitioning Movable
Partitioning Storage Wall Systems
Technical information associated with:
AET Raised Flooring Underfloor Air Conditioning
Technical information associated with:
AET Hiross Flexible Space
Underfloor Air Conditioning |
Traditional VAV Terminal
Reduced volume = Reduced throw
PleinAir with Time Modulating Dampers
Both diagrams show air being delivered at the same volume. The Time
Modulating Damper (shown below) delivers air from selected grilles in 6
second sequences, so giving improved air movement at all part-load
conditions.
Time Modulation Terminal
Reduced Volume = Full throw
Advanced Ergonomic
Technologies
The Center
201-203 London Road
East Grinstead
West Sussex
RH19 1HA
Email this company
Tel : 01342 310400
Fax : 01342 310401
Offices in Hong Kong, Kuwait, Mumbai & Shanghai
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