ASHARE MTL octobre 2010 Présenté par: Luc Martin, Ing.

1. NOUVELLE GÉNRATION DE DÉSHUMIDIFICATEURS DESSICCANTS RÉGÉNÉRÉS PAR RÉCUPÉRATION DE CHALEUR ET THERMOPOMPE ASHARE MTL octobre 2010Présenté par: Luc Martin, Ing.

2. Horraire • Focus - Patinoire • Pourquoi déshumidifier? • Critères de conception • Quelle charge latente • Technologie de déshumidification. • Applications pour la technologie par Dessiccant

3. Pourquoi déshumidifier ? • Fog & Condensation • Rust & Corrosion • Ice Quality • Ice Painting • Mold & Fungi • Indoor Air Quality

4. All fungi require 4 elements for survival Spores are everywhere Each fungus has its favorite temperature range Fungi has a versatile appetite – wood, plastic, glass, metal, jet fuel Pourquoi déshumidifier ? The “Mold Square” TEMPERATURE Molds are fungi that reproduce by releasing tiny spores into the air. Spores lucky enough to land on moist objects may begin to grow. ... SPORES FOOD • Moisture • Only element that can be controlled • Without moisture, fungus cannot access nutrients in their food • On dry surfaces, spore growth is retarded or remains dormant MOISTURE

5. Critères de conceptions • NHL Guidelines • Start-of-Game = 60ºFdb, 40%RH, 35.6ºFdp • End-of-Game = 65ºFdb, 40%RH, 40.1ºFdp • Community Rink • Indoor Design • 55ºFdb, 50%RH, • 36.7ºFdp • Upper Limit • 55ºFdb, 60%RH • 41.4ºFdp

6. Charge latente • Infiltration • 0.2 ACH • 2000 CFM (60 lbs/hr) • Internal Load • Spectators (7 lbs/hr per 100) • Ice Skaters (15 to 20 lbs/hr) • Ice Resurfacing (25 lbs/hr) • Ventilation Load • Spectators = 8 CFM/person • Playing Area = 0.3 CFM/sq.ft. • 30 lbs/hr per 1000 CFM

7. Hillcrest Curling Venue • 6000 Spectators • 5 Units - 2100 lbs/hr

8. Pacific Coliseum • 15000 Spectators • 4 Units - 2400 lbs/hr

9. horraire • Focus - Patinoires • Technologie de déshumidification • Basé sur le refroidissement • Roue Dessiccante • Haute température (régénéré au gaz) • Basse température (thermopompe) • Couts d’opérations

10. Basé sur le refroidissement

11. Système DX • Performance (10 kW unit)

12. Déshumidification par dessiccant • Desiccant Rotor Process REACTIVATION OUTLET REACTIVATION INLET DRY PROCESS AIR WET PROCESS AIR a a

13. Dessiccant (Haute température) 200mm & 400mm Rotors Community Hockey Rink - Process Inlet: 55˚Fdb, 50%, 32 gr/lb - React Inlet: 71˚Fdb, 94 gr/lb - Load: 81 lbs/hr 200mm (16 RPH) - Airflow: 5,000 CFM - React Outlet: 135˚Fdb, 273 gr/lb - Process Outlet: 89˚Fdb, 6.2 gr/lb - Moisture Removal: 83 lbs/hr - React Energy: 246,566 Btu/hr - Removal Efficiency: 2,970 Btu/lb - Heat Transfer Eff: 2,205 Btu/lb 400mm (8 RPH) - Airflow: 5,000 CFM - React Outlet: 120˚Fdb, 208 gr/lb - Process Outlet: 77˚Fdb, 5 gr/lb - Moisture Removal: 88 lbs/hr - React Energy: 186,973 Btu/hr - Removal Efficiency: 2,125 Btu/lb - Heat Transfer Eff: 1,342 Btu/lb

14. Dessiccant (Basse température)

15. COND COIL PRE-HEAT COIL COAX EVAP COIL DX COIL HEATING COIL A D C B Dessiccant (Basse température) REACT FAN DESICCANT ROTOR 125ºF 65ºF SUPPLY FAN 45ºFdp

16. Point de rosée Bin Data (Canada) Humidity Ratio Bins (5 gr/lb)

17. L’effet de l’humidité sur la glacière Source: 2006 ASHRAE Refrigeration, Chapter 35, Page 35.3 Latent Load on Ice Surface (Space = 55ºFdb, Ice Surface = 22ºF)

18. Cout d’opération.

19. Horraire • Pourquoi déshumidifier • Technologie • Applications du dessiccant • Unité d’apport d’air frais • Santé salle d’opération. • Supermarchés • Entrepôt frigorifique

20. Dessiccant unité d’apport d’air frais.

21. 140 120 100 80 Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) Humidity Ratio Grains of Moisture per Pound of Dry Air (gr/lb) 60 40 20 Dessiccant unité d’apport d’air frais Desiccant with Heat Pump Technology Cooling-Reheat dehumidifiers require 30% to 40% additional cooling to achieve same dew point 93F 110 gr/lb 75F 60 gr/lb Reheat 10 20 30 40 50 60 70 80 90 100 110 Dry Bulb Temperature °F

22. Santé

23. Salle d’opération • Changing Needs • Surgeons wear multiple layers of clothing, face masks, hair covers, and protective gloves • Long hours • Cool / Dry Conditions • When room temperatures must be held at 65°F and lower, conventional cooling systems have difficulty to comply with humidity specifications of building codes. In many critical care facilities, humidity can cause problems and expose the institution to unnecessary risk

24. Salle d’opération

25. Supermarchés • Issue: • Comfort • Product Display • Energy Use • Sub-Cooling • Anti-sweat heaters • Solution: • Separate sensible and latent loads • Dehumidify the outdoor air for ventilation & make-up • Maintain 40% relative humidity • Take advantage of lower humidity

26. Entrepôt Frigorifique Before After

27. Résumé • Dans les arénas moyen le plus efficace et augmente le COP de tout le système. • La charge latente venant de l’air frais est la plus importante. • Le dessiccant qui est souvent considéré comme enrgivore…. Devient le système le plus efficace pour déshumidifier en récupérant l’énergie.

28. Conclusion Contôler l’humidité fournit un environement propre et sain.