HVAC Comfort with NEX and PLAY - Reliability or Flexibility?
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The document discusses innovative HVAC solutions called NEX and PLAY that can improve comfort and efficiency in buildings. NEX diffusers have concave elements that swirl air for even distribution, higher induction, and tolerance to temperature and velocity variations. PLAY diffusers allow full horizontal adjustment through movable sectors to address air distribution issues without blocking airflow. Both solutions aim to increase occupant comfort while optimizing energy use and reducing service costs compared to traditional diffusers.
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HVAC Comfort with NEX and PLAY - Reliability or Flexibility?
- 1. NEX and PLAY Innovative Solutions to Improve Comfort & Efficiency
- 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