1. NEX and PLAY
Innovative Solutions to Improve Comfort & Efficiency

2. Discomfort is Expansive

3. Office Building
• Average HVAC technician service call: $400
• Absenteeism
• Decreased employee performance
• Cost of over heating and over cooling
• Extreme cases of losing employees: cost of re-hiring,
re-training, loss of productivity

4. What about a restaurant?

5. • Seating capacity: 300
• Open 360 nights / year
• Average 1 dinner / seat / night
• Total 108,000 customers / year
• Some feel air distribution-related discomfort
• 2% of customers would've stayed a bit longer if
slightly more comfortable, just enough to buy
one last drink or dessert
• Average gross profit per drink or dessert: $3

6. • Seating capacity: 300
• Open 360 nights / year
• Average 1 dinner / seat / night
• Total 108,000 customers / year
• Some feel air distribution-related discomfort
• 2% of customers would've stayed a bit longer if slightly more
comfortable, just enough to buy one last drink or dessert
• Average gross profit per drink or dessert: $3
Consequence:
$6,840 profit / year

7. Common sources of air
distribution related discomfort

8. A well designed HVAC System
Performs really well in theoretical
or average conditions

9. Cold air supplied at low velocity
... Will drop from standard diffusers

10. While at higher velocity...
Air jets collide and are deflected

11. How can we improve performance in
VAV applications?
Using a diffuser providing higher
tolerance to velocity and temperature
variations.

12. NEX Concave
Elements
• Won a new products contest as
the Best Heating Component
• Also ideal for cooling and VAV
applications
• Innovative architectural look

13. NEX Concave
Elements
• Swirl pattern
• Air diffused in multiple jets of
various velocities
• High induction ratio, mixes more
air, faster and more evenly
• Higher tolerance to temperature
and velocity variations

16. Another very common issue
causing discomfort
• Flex duct with kink or angle
• Up to 80% of airflow could be
diffused in one direction
• Same issue with rigid duct
and 90 degree elbows

17. In theory, ASHRAE recommends
• Rarely happens in real world
• Most of the time, not enough
space in the ceiling
• Sometimes installer just lazy,
poorly trained or trying to
save on time and material

18. NEX + PERFAIR
• 2 layers of air equalizing
• First layer: damper + equalizer
integrated in plenum's neck
• Second layer: the Concave
Elements. No direct exit, air is
forced to swirl inside the plenum

19. Energy Efficiency
• Stratification & uneven mixing of supplied air with
room air causing inaccurate or varying
measurements of thermostat and humidistat
• Can result in over-heating / over-cooling
• Equipment on/off and modulation = more energy
used to achieve same result as steady conditioning

20. Return on Investment
An HVAC system is a chain of components
A chain is only as strong as its weakest link
Cost adds up... Not Performance!

21. What about unpredictable factors?
• At design time, impossible to know and plan for
everything
• Added furniture and decorative objects might
obstruct and deflect air jets
• Cubicle layout modified
• Each individual's tolerance to hot and cold

22. Solutions available so far
• Blocking air in one or more directions
• Air volume control damper
• Adjustable diffusers, from horizontal to vertical
airflow
• VAV diffusers, expansive to purchase and to
install

23. The new solution

24. PLAY Adjustable Sectors
• Only diffuser allowing for full horizontal
adjustment
• Easy to adjust, from the face and without
tools
• 1, 2, 3, 4 way and swirl with easy sectors
positioning
• Can also be adjusted by as many
degrees as required to avoid people and
objects
• Innovative architectural look

25. Example 1 - Cubicle Layout
7/8 comfort ratio
1 person complains about the cold

26. Solution 1 : adjust damper to reduce
the volume of cold air supplied
5/8 comfort ratio

27. Solution 2 : block one way
5/8 comfort ratio

28. Solution 3 : block one way + adjust
damper for less volume
7/8 comfort ratio

29. PLAY Solution: adjust horizontal angle
just enough to fix issue
8/8 comfort ratio

31. From Above

32. From Above
Solved the comfort
issue...
In the most energy
efficient way

33. PLAY Adjustable Sectors
• Gives flexibility to quickly solve air distribution issues
• Fewer and cheaper service calls
• Increased general level of comfort
• Can help optimizing energy
Just PLAY with it!

34. PLAY-R
New design possibilities

35. Horizontal spread in narrow spaces

36. Hallways
Blends in
perfectly while
supplying air
efficiently

37. NEX - Reliability
• High tolerance to velocity and temperature variations
• Not affected by angle of air entering diffuser
• High Induction Rate
• Great for limited space in the ceiling
• Choice of 5 Concave Element colors

38. PLAY - Flexibility
• High tolerance to velocity and temperature variations
• Not affected by angle of air entering diffuser
• High Induction Rate
• Great for limited space in the ceiling
• Choice of 5 Concave Element colors
• Optimize Comfort and Energy
• Only diffuser allowing for full
horizontal adjustment
• Easy to install, easy to use
• New design possibilities
• Save money on first service call
NEX - Reliability

39. PLAY - Flexibility
NEX - Reliability
• High tolerance to velocity and temperature variations
• Not affected by angle of air entering diffuser
Both can easily replace diffusers in existing buildings
PERFAIR plenums with Top or Side connexions
• High Induction Rate
• Great for limited space in the ceiling
• Choice of 5 Concave Element colors
• Optimize Comfort and Energy
• Only diffuser allowing for full horizontal adjustment
• Easy to install, easy to use
• New design possibilities
• Save money on first service call
Suitable for all types of ceilings (Lay-in, Drywall, Open)

40. You now have the option!
NEX and PLAY Innovative Solutions
effectiv-hvac.com