Transcript Document

Air Management
and Energy Savings
with
High Efficiency HVAC
Diffusers & Tubes
Manufactured in Quebec
Developed in Germany with advancements
of North America by 40 years expertise, our product architectural design
is completely different. Now manufactured in Quebec, we pride
ourselves with offering a "Made in Canada" product.
Our manufacturer is a member of the Canada Green Building Council.
Induction “is the act of causing or
bring on or about”
Using this principle it is possible to move large masses of air
in the desired direction with small output jets of air.
The greatest achievements in these phenomena, is the mixture
of primary air from the ductwork with the ambient air of
the room. This effect makes the air temperature difference
isothermal (constant).
Isothermal
Not Isothermal
DAL 358 – Swirl Diffuser
The DAL358 is a highly inductive swirl diffuser with a square or round front panel integrated
with slotted rails with off-center drums made of ABS with sectional rectifiers. It is for general
purpose use in closed and open ceiling system installations.
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Manufacturing concept allows for the delivery of large volumes of air
Reduces air speed, temperature variances and excessive noise transmission
Better air quality through mixture of fresh air with the existing air within the space
Adjust the air stream horizontally and vertically, providing the occupants with maximum comfort
Reduces construction costs because less diffusers are needed due to their high degree of efficiency
LEED points eligible
Existing Air Entry of Diffusers
Representation of conduit ventilation (a) according to standards, (b) normally installed.
98% of the existing facilities of North American do not comply with standards for uniformity
of the airflow in a duct.
DAL 358 Plenum
Inside the plenum, a perforated grid is installed to stabilize the
airflow towards the diffuser and to eliminate noise. The air
leaves the diffuser at 360°. With a high induction ratio, we
obtain a better mixture of the primary air with the air of the
room also providing a very low temperature variation. This
eliminates the uneven distribution of the 80/20 ratio.
Cylinder Elements - DAL358
The off-center drum support forms an airflow duct that conducts the air in circular paths.
• allows high discharge velocities with low sound power levels
• can control and direct the outputs by 4 x the typical induction
• individually supported and can rotate by 360 degrees
• a strong partial vacuum develops near the surface of the body of the drum
Discharge Behavior
The form of the drums was conceived so that each positioning gives us a precise trajectory of the air.
• allowing the air to flow around obstacles such as light fixtures, ceiling protrusions or pillars
• adjust the air stream to any desired pattern, even after installation has taken place
• if diffusers are close to a wall, we are able to direct the flow of air in 2 or 3 ways
Multiple forms of airflow, by varying the outlet air velocity and its acoustic low power,
can be applied to various occupied room applications.
Stratification of the Air
A weak air circulation inside the occupied zone creates a multitude of layers of air at different temperatures.
The cold air (denser) goes down to bottom of the room and the hot air (lighter) remain at the top of the
ceiling. Heat released by lighting will also effect stratification.
In the case of heating, most of the air entering the room approximately at 35°C slightly reaches the zone
occupied because of the low level of induction of the standard diffusers. Most of the hot air will be evacuated
by the return vents. The air while accumulating between the two ceilings thus forms a significant mass of hot
air at a temperature approximately of 28°C.
Destratification = Economy of Energy
The DAL358 generates variations in temperature of 2 to 3 times less than the standard
diffusers, the air temperature of return will be approximately 23°C.
A difference of ± 13%. Annually, it represents energy saving of about $1,291 per office
building of 15,000 square feet only by mixing the air in an effective way.
Temperature Variation of Cooling
With a flow rate of 420 cfm pulsating at 12°C, a standard diffuser reaches a variation in temperature of
2.3°C. The occupant feels a temperature of 19.7°C, in the case of a diffuser DAL358, the occupant feels a
temperature of 21.3°C. We obtain a temperature variation in the occupied zone of 0.7°C
The variation in temperature at breast height is directly related to the induction ratio.
An accurate reading of the temperature of the room will allow more dehumidification.
Economy of Energy
The savings of energy related to the management of air can be summarized in three parts:
1.
Heating and air-conditioning of the primary air
2.
Destratification of the air
3.
Reduction in the mechanical over-ventilation, over air conditioning/heating of the central zone
Taking average costs of the thermal energy of 8.72 cents/KWh, we obtain a cost of $7,548 a year for
the heating of the outdoor air and $2,879 a year for humidification. For a total of $10,427 a year.
With the DAL358, it’s possible to save approximately ±20% of the contribution of outdoor air. That
represents an amount of $2,085 a year in savings. A building of 10 floors with an average of 15,000
square feet per floor, would save about $20,850 a year.
Economy of Construction
Part of the cost of installation of the secondary branches of the
ventilation system is directly related to the number of diffusers
installed. This installation requires more conduits and consequently is
more expensive. The majority of buildings with open space use many
standard diffusers (low ratio of induction) in order to ensure adequate
ventilation of the occupied zone. The performance of the DAL359
diffuser in some applications reduces the number of diffusers by
approximately half.
ORIGINAL PLAN – 147 Diffusers & 47 Linear Diffusers
COST
$11,284.00
MATERIAL
$12,212.00
INSTALLATION & BALANCING
$21,340.00
TOTAL
$44,836.00
MODIFIED PLAN – 100 DAL 358 Diffusers & 12 Linear Diffusers
COST
$24,180.00
MATERIAL
$ 7,050.00
INSTALLATION & BALANCING
$12,320.00
TOTAL
DIFFERENCE: $1,286.00
$43,550.00
- St-Hyacinthe, Quebec
In 2004, the firm Teknika HBA was commissioned by ING Canada, a major insurance company as a
consultant in civil, structural, mechanical and electrical for the expansion project of 10,000 m2 on a
six-storey building.
Two major technical challenges were: maximize space and ensure optimal comfort for office space. To
meet the need of comfort, maximizing space and reducing drafts, the emphasis has been on the air
diffusion. The high induction diffusers, European design, were used in the office space and cafeteria.
The result was convincing. Imagine working spaces in a wedge of glass bottom to top, facing south;
comfortable in all respects without base heaters and no effect of air flow. A rate of 3 ft 3 of air per
minute per square foot is released from the ceiling in the executive offices closed! The diffusers with
high induction has reduced substantially the amount of ductwork, diffusers and other accessories . We
evaluated in phase concept that ING Canada could reduce the cost by $120,000 while having a better
performance. The proposals have confirmed our analysis.
Nicolas Bélanger, ING.
Directeur mécanique-électricité Granby
Architectural Appearance
Contrary to the traditional diffusers, the design of the DAL358 is integrated into the ceiling
for a neater appearance.
They are available in several classic designs and come in various architectural shapes and colors.
Moreover, their superior performance contributes significantly to LEED certification of buildings.
NAD Tube
The NAD Tube is a high induction air diffuser, manufactured with polyester impregnated PVC
(Polyvinyl Chloride) and is impermeable to liquid. The PVC material is light and extremely flexible.
This mechanism is attached with a rail system which allows for a quick installation. It is applicable
to all buildings, easy to dismount, transport and clean with a simple swifter.
• Function in heating and air conditioning mode
• Designed based on the client’s project requirements
• Significant energy savings
• Economical
• Virtually maintenance free
Principles of the NAD Tube
The operation is based on the basic principle of the diffusion of air with high induction. Perforations
of various diameters and their positioning on the NAD Tube (compared to the traditional diffusers)
allows the air to leave the holes at high speed to produce an entrainment effect. This is done by
moving the air around the tube with a large mass of ambient air. The heat exchange between supply
air and ambient air is done near the NAD Tube and the temperatures are quickly close to isothermal.
The risk of stratification is eliminated without creating drafts in occupied zones.
Customized To Maximize Efficiency
NAD Tube Features
Custom and Unique
Every installation is unique to the facility. Based on mathematical models, we can maximize the uniformity of seasonal
temperatures by determining the exact speed of velocity demand, dimensions of the jets and the necessary course of
direction.
Warranty
Our product is made from various materials that are durable, fire proof and resistant to UV and acid vapors. They are
treated for anti dust and offer a 10-year guarantee.
Aesthetics
We offer a wide array of colours to choose from blending into your décor. We can adapt and integrate into your
existing architectural design too.
Conservation
Ranging from 30% to 35% by way of destratification, depending on the application and 80% to 100% energy saving
for heating fresh air during winter time. LEED points eligible.
RECREATIONAL
NAD
INDUSTRIAL
COMMERCIAL
TUBES
Energy-Efficient Technologies: Innovation, Future Outlook and Verification
2010-01-29 - Energy efficiency technologies are continuously evolving in response to industry needs
and demands. New technologies, those on the horizon, and how they are tested and verified in Canada,
were the topics of discussion at an Energy 2009 panel session.
Alain Dufresne from NAD Klima described a new type of air duct developed by his company that
operates on the principle of mixing air to make it isothermal. "The temperature differential between the
floor and the ceiling of a facility will be less than 0.2°C," noted Dufresne in describing his company’s
innovations. The duct is made out of fabric with thousands of holes that create a ventilation effect that
quickly mixes air from the floor of a facility to the ceiling. Easy to install and clean, the tubes allow
intake air to be heated on demand.
Customized piercing of the tubes allows for adjustments to desired air pressure and velocity. A tube of
90 to 150 metres can be installed on tracks in one day. In one installation, one long tube replaced one
facility’s entire duct work for a 30% annual energy savings or the equivalent of $385,000. The tubes
can also be arranged to "make air curtains that prevent cold air from entering."
Applications in industry include the plastics manufacturing sector and printing plants – wherever heat
is generated and there is air intake. The tubes eliminate air movement issues, and, in comparison to
large fans, are quiet. As well, air temperature remains constant throughout the plant. Similarly, in the
summer, the tubes homogenize temperatures in the entire facility by using cooled air.
New technologies and innovation are critical to moving energy efficiency forward. Developments in
combustion technologies as showcased by CanmetENERGY, and the new air duct tubes designed by
NAD Klima are current examples of advances that hold promise.
Kraft Canada Inc. - Montreal Bakery
High induction air diffusion tubes provide energy savings at Kraft bakery
Canadian Industry Program for Energy Conservation (CIPEC) – Newsletter March 2010
Installing innovatively-designed air diffusion tubes at Kraft Canada Inc.’s Montreal Bakery, is estimated to save the company
about 210,000 cubic metres (m3) of natural gas annually. As David Binet, Continuous Improvement Engineer, explains “for
an exothermic process like ours, using induction tubes to increase the amount of fresh air in the plant and reduce heating costs
will be very beneficial.”
While the tubes have addressed a major concern – achieving significant energy savings, Claude Ménard, Project Engineer at
Formatrix 67, air treatment specialists working with Kraft, indicates that other issues have also been resolved. Keeping the
facility under positive air pressure was an ongoing concern and the semi-automatic ventilation control was in need of
modernization.
After evaluating different factors such as outside air temperature and performance of existing air tubes, Binet and the company’s
corporate sustainability team decided to install NAD tubes. The high induction air diffusion tubes are designed to ensure
temperature, humidity and air density uniformity.
The project completed in June 2009, during a two-week shutdown, included the installation of 8 30-metre long, 1.2-metre wide
metal air diffusion tubes in the oven area; automation of the entire ventilation process; installation of two additional air handlers
to increase heat recovery and comfort; and removal of the make-up air unit.
In the case of the Montreal bakery, the customized piercing pattern in the tubes mixes existing warm air with outdoor air
allowing the facility to operate at lower, more uniform temperatures without consuming energy to heat incoming air. “We can
bring in air as low as -7°C without condensation,” says Binet. Moreover the comfort level for employees has increased
noticeably. Additional benefits include low maintenance, easy cleaning and limited dust build up.
Pleased with the reduction in gas consumption seen to date, Binet recommends that other companies in similar situations as the
Montreal Bakery consider these tubes as an alternative to conventional air diffusion systems.
RRA 387 – Circular Duct Diffuser
RRA 387 is for visible mounting in commercial areas, and can be used as a part of the room’s
interior design. They are particularly suitable when technology should have not only a functional
purpose but also an element of design. These diffusers can be used in commercial and industrial
areas. The discharge patterns available through these diffusers make it ideal to solve just about any
climate control application in an uncomplicated and comfortable manner.
The RRA accommodates new trends in architectural design extremely well with the brilliant luster of its
baked-on paint, in addition to being very easy to maintain.
RRA – Method of Operation
The linear duct outlet can be installed at any point or segment and in any position (horizontal or
vertical) in an existing duct system. Air flows through the duct outlet lengthwise and is first discharged
vertically and can then be diverted according to the cylinder setting. It is possible to have multiple ducts
in a pipeline.
Product Benefits
• Adjustable setting of discharge direction from high-diffusion to vertical
• Easily adaptable to any changes in the room use
• Combination of all discharge patterns in one diffuser
• Rapid temperature and velocity reduction when cooling
• Can be installed at any point in a circular duct system (horizontal or vertical)
• Can be installed onto any duct or fittings with ISO norms
• Individual color schemes
RRA
387
A Division of AFI Group Inc.
SAVE MONEY
SAVE ENERGY
430 King Street West
Chatham, Ontario
519-397-4338
www.eco-en-ergy.com
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