Air-Handling Systems, Energy, and IAQ - Trane

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lower supply-air temperature Challenges � Minimize comfort problems due to “dumping” � Avoid condensation on air distribution system components 55 © 2009 Trane lower supply-air temperature Minimizing Comfort Problems (Dumping) � Use linear slot diffusers… 56 © 2009 Trane linear slot diffuser “dumping” conventional concentric diffuser © Trane, a business of Ingersoll Rand 30
lower supply-air temperature Minimizing Comfort Problems (Dumping) …or use fan-powered VAV terminals as “air blenders” primary air (45°F) 57 parallel fan-powered VAV terminal © 2009 Trane plenum air (80°F) supply air (55°F) lower supply-air temperature Avoiding Condensation 58 © 2009 Trane primary air (45°F) plenum air (80°F) supply air (55°F) series fan-powered VAV terminal � Properly insulate and vapor-seal ductwork, VAV terminals, and supply-air diffusers � Use an open ceiling plenum return, if possible � Maintain positive building pressure to minimize infiltration of humid outdoor air � Monitor indoor humidity during unoccupied periods and prevent it from rising too high � During startup, slowly ramp down the supply-air temperature to pull down indoor humidity � Use linear slot diffusers to increase air motion © Trane, a business of Ingersoll Rand 31
Page 1 and 2: Air-Handling Systems, Energy, and I
Page 3 and 4: © 2008 Trane Inc. 2 Air-Handling S
Page 5 and 6: Today’s Presenters 5 6 Art Hallst
Page 7 and 8: Balancing IAQ and Energy � Buildi
Page 9 and 10: ASHRAE Std 90.1 Moves Toward Net-Ze
Page 11 and 12: Consider Air-to-Air Energy Recovery
Page 13 and 14: Energy-Saving Ideas For Specific Sy
Page 15 and 16: Single-Zone VAV System EA OA 25 ©
Page 17 and 18: Energy-Saving Ideas For Constant-Vo
Page 19 and 20: Series Type III Desiccant Wheel 33
Page 21 and 22: series Type III desiccant wheel Ben
Page 23 and 24: Optimized VAV System Controls � O
Page 25 and 26: Fan-Pressure Optimization 45 supply
Page 27 and 28: ventilation optimization System Lev
Page 29: Lower Supply-Air Temperature � Be
Page 33 and 34: Air-Handling Systems, Energy and IA
Page 35 and 36: Benefits of Chilled-Water DOAS 65 6
Page 37 and 38: Dual-Wheel Dedicated OA Unit 69 coo
Page 39 and 40: Dual-Wheel Dedicated OA Unit Series
Page 41 and 42: 78 Air-Handling Systems, Energy and
Page 43 and 44: Particulate Filters � Type of Par
Page 45 and 46: Catalytic Air Cleaning Effectivenes
Page 47 and 48: References for This Broadcast Where
Page 49 and 50: Air-Handling Systems, Energy and IA

Air-Handling Systems, Energy, and IAQ - Trane

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