HOT AIR AIR HEATER (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved 1
(888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Over-Fire Air (15-20%) Secondary Air (55%-65%) Primary Airflow (15%-20%) (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Combustion Air (to boiler) 620 o F Flue Gas (from boiler) 700 o F Inlet Air 100 o F to Stack 290 o F (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved 4
Gas Outlet temperature A 10 F increase in outlet temperature decreases boiler efficiency by 0.25%. On an typical utility boiler, 10 F increases the annual fuel consumption by $ 300,000 - $600,000/yr
SO 3 vs. Sulfuric Acid Dew point Temp. Ref. A&WMA, 2008 Mega Symposium, The Effect of SO 3 Sorbents on Electrostatic Precipitator Performance, Paper # 75
Condensation Deposits
ABS PLUGGING (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved 8
Air In-leakage Performance Air Heater Challenges Cold Operation Hot Operation Radial Seal Plate Maintain Minimum Seal Gap Maintain Minimum Seal Gap Basket Axial Seal (Circumferential Seals Not Shown) Axial Seal Plate Cold End Radial Seal Plate Source of illustration: Compliments of Storm Technologies, Inc. (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Sources of Air Leakage Bypass Seal Leakage passing around the APH into the warm air flow Bypass Seal Leakage passing the axial seals into the gas flow AIR Side Bypass Seal Leakage passing around the APH into the cold gas flow Hot Radial Seal Leakage Cold Radial Seal Leakage Circumferential leakage through an air heater GAS Side Source of illustration: Compliments of Storm Technologies, Inc.
High Velocity Radial Seal Leakage 11
Holes / Erosion in Bypass seals (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Fan Power Savings from Reduced Leakage FAN Before (AMPS) After (AMPS) 3A ID FAN 572 459 3B ID FAN 691 468 3A FD FAN 131 125 3B FD FAN 128 113 (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved 13
High Performance Radial Seal (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Leakage Solutions DuraMax TM Radial Seal DURAFLEX Circumferential Seal Original Style Circumferential Seal
Power Consumption (%) Economic Consideration Fan Power Power Consumption vs. Volumetric Flow 100 80 60 40 20 0 20 40 60 Volumetric Flow (%) 80 100
Leakage Solutions DuraMax TM Radial Seal (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
ABS Temperature Zone o F ABS 12 INCHES TO 30 INCHES 300 o F TO390 o F
ABS Buildup at Precipitator Inlet
Catalyst in Airheaters GAS FLOW (888) 488.3100 WWW.PARAGONAIRHEATER.COM Copyright 2010 Paragon Airheater Technologies, All Right Reserved
Substrate Failure Typical Enamel Coating ELEMENT CRACKING FAILURES MOST LIKELY DUE TO CORROSION UNDERMINING THE COATING AND NON-DUCTILE METAL SUBSTRATE FATIGUE FAILURES 21
Substrate Corrosion
ABS Element Options Standard ABS Style