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NSTX TF Bundle & Center Stack Curing Oven Mike Viola Joe Rushinski Frank Jones April 14, 2003.

Published byPhebe Bond Modified over 9 years ago

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Presentation on theme: "NSTX TF Bundle & Center Stack Curing Oven Mike Viola Joe Rushinski Frank Jones April 14, 2003."— Presentation transcript:

1 NSTX TF Bundle & Center Stack Curing Oven Mike Viola Joe Rushinski Frank Jones April 14, 2003

2 4/14/2003 2 NSTX TF Bundle & Center Stack Curing Oven Criteria: Fit the TF bundle with Hub Assembly Oven is 4’ x 4’ x 24’ long Controlled heating to 200ºC (392ºF) for epoxy curing and 465ºF for tube soldering Oven is capable of 600ºF Uniform Heating Oven is 384 ft3 @1000 CFM ~ 3 air changes per minute Easy access to bundle during curing for bolt tightening Oven is split lengthwise with guidepins (no bolts)

3 4/14/2003 3 NSTX TF Bundle & Center Stack Curing Oven Reduced size for future storage & handling Oven is built in three 8’ sections Feedthroughs for 12 thermocouples Windows for viewing potential problems 4 windows provided (2 at each end) Parts available to the NCSX Autoclave Heaters (2 @ 12 KW) Blower (2000 CFM @ 5 in.; 4000 CFM @ 2 in.)

4 4/14/2003 4 NSTX TF Bundle & Center Stack Curing Oven Fluid: Air Duct Type: RECTANGULAR Duct Side a Dimension (in): 14 Duct Side b Dimension (in): 8 Flow Rate: 2000 SCFM Duct Length (ft): 14 Viscosity (cP): 0.018 Inlet Pressure (PSIG): 0 Temperature (F): 500 Duct Material: GALVANIZED METAL Duct Roughness (ft): 0.0005 Fluid Velocity (ft/min): 5159.32 Reynolds Number: 280907 Flow Region: Turbulent Friction Factor: 0.0184 Density at Inlet: 0.041 Specific Volume at Inlet: 24.163 Specific Heat Ratio: 1.4 Straight Duct Loss (inches Water): 0.248 Hood Entry Type: None Elbow Aspect Ratio 1: 2.0 Radius / Duct Diameter 1: 1.0 Number Of Elbows 1: 2 Elbow Loss Factor 1: 0.21 Elbow Loss 1 (inches Water): 0.385 Duct Exit Configuration: Expansion within Duct Expansion Taper Angle (Degrees): 30 Diameter Ratio: 1.75:1 Loss Factor: 0.51 Velocity Pressure Outlet (inches Water): 0.097761953 Exit Configuration Loss (inches Water): -0.292 Equipment Name 1: Heater Equipment 1 Pressure Drop (inches Water): 0.05 Equipment Name 2: Heater Equipment 2 Pressure Drop (inches Water): 0.05 Total Duct Loss (inches Water): 0.441 Velocity Pressure (inches Water): 0.917 Duct Pressure Loss and Velocity Pressure Results Job Number: TF Bundle Oven Line Number: Oven Supply Velocity High: 5159.32

5 4/14/2003 5 NSTX TF Bundle & Center Stack Curing Oven Fluid: Air Duct Type: ROUND Duct Diameter (in): 12 Flow Rate: 2000 SCFM Duct Length (ft): 14 Viscosity (cP): 0.018 Inlet Pressure (PSIG): 0 Temperature (F): 500 Duct Material: GALVANIZED METAL Duct Roughness (ft): 0.0005 Fluid Velocity (ft/min): 4703.58 Reynolds Number: 268213 Flow Region: Turbulent Friction Factor: 0.0184 Density at Inlet: 0.041 Specific Volume at Inlet: 24.163 Specific Heat Ratio: 1.4 Straight Duct Loss (inches Water): 0.196 Hood Entry Type: None Elbow Type 1: 4 piece Radius / Duct Diameter 1: 1.50 Number Of Elbows 1: 3 Elbow Sweep 1 (Degrees): 90 Elbow Loss Factor 1: 0.27 Elbow Loss 1 (inches Water): 0.617 Duct Exit Configuration: Vertical Discharge, No Loss Exit Configuration Loss (inches Water): 0 Total Duct Loss (inches Water): 0.814Velocity Pressure (inches Water): 0.762 Duct Pressure Loss and Velocity Pressure Results Job Number: TF Bundle Oven Line Number: Oven Return

6 4/14/2003 6 NSTX TF Bundle & Center Stack Curing Oven SCFMSizeAreaVelocityDuct LossPressure 200012x1416833790.2250.393 20001415434550.3740.411 200012x1214439360.2790.534 20008x1411251590.4410.917 20001211347030.8140.762 Choose 12x12 Square Supply with 14” round return

7 4/14/2003 7 NSTX TF Bundle & Center Stack Curing Oven Duct Pressure Loss and Velocity Pressure Results Job Number: TF Bundle Oven Line Number: Oven Supply 12” x 12” Square Fluid: Air Duct Type: RECTANGULAR Duct Side a Dimension (in): 12 Duct Side b Dimension (in): 12 Flow Rate: 2000 SCFM Duct Length (ft): 14 Viscosity (cP): 0.018 Inlet Pressure (PSIG): 0 Temperature (F): 500 Duct Material: GALVANIZED METAL Duct Roughness (ft): 0.0005 Fluid Velocity (ft/min): 3936.01 Reynolds Number: 245354 Flow Region: Turbulent Friction Factor: 0.0183 Density at Inlet: 0.041 Specific Volume at Inlet: 24.163 Specific Heat Ratio: 1.4 Straight Duct Loss (inches Water): 0.125 Hood Entry Type: None Elbow Aspect Ratio 1: 1.0 Radius / Duct Diameter 1: 1.5 Number Of Elbows 1: 2 Elbow Loss Factor 1: 0.13 Elbow Loss 1 (inches Water): 0.139 Duct Exit Configuration: Vertical Discharge, No Loss Exit Configuration Loss (inches Water): 0 Equipment Name 1: Heater Equipment 1 Pressure Drop (inches Water): 0.05 Equipment Name 2: Heater Equipment 2 Pressure Drop (inches Water): 0.05 Velocity Pressure (inches Water): 0.534 Total Duct Loss (inches Water): 0.364

8 4/14/2003 8 NSTX TF Bundle & Center Stack Curing Oven Fluid: Air Duct Type: ROUND Duct Diameter (in): 14 Flow Rate: 2000 SCFM Duct Length (ft): 14 Viscosity (cP): 0.018 Inlet Pressure (PSIG): 0 Temperature (F): 500 Duct Material: GALVANIZED METAL Duct Roughness (ft): 0.0005 Fluid Velocity (ft/min): 3455.69 Reynolds Number: 229897 Flow Region: Turbulent Friction Factor: 0.0182 Density at Inlet: 0.041 Specific Volume at Inlet: 24.163 Specific Heat Ratio: 1.4 Straight Duct Loss (inches Water): 0.09 Hood Entry Type: None Elbow Type 1: 4 piece Radius / Duct Diameter 1: 2.50 Number Of Elbows 1: 3 Elbow Sweep 1 (Degrees): 90 Elbow Loss Factor 1: 0.23 Elbow Loss 1 (inches Water): 0.284 Duct Exit Configuration: Vertical Discharge, No Loss Exit Configuration Loss (inches Water): 0 Velocity Pressure (inches Water): 0.411 Total Duct Loss (inches Water): 0.374 Duct Pressure Loss and Velocity Pressure Results Job Number: TF Bundle Oven Line Number: Oven Return 14” Round

9 4/14/2003 9 NSTX TF Bundle & Center Stack Curing Oven Duct Pressure Loss and Velocity Pressure Results Job Number: TF Bundle Oven Line Number: Oven Body Fluid: Air Duct Type: RECTANGULAR Duct Side a Dimension (in): 40 Duct Side b Dimension (in): 40 Flow Rate: 2000 SCFM Duct Length (ft): 24 Viscosity (cP): 0.018 Inlet Pressure (PSIG): 0 Temperature (F): 500 Duct Material: GALVANIZED METAL Duct Roughness (ft): 0.0005 Fluid Velocity (ft/min): 354.24 Reynolds Number: 73606 Flow Region: Turbulent Friction Factor: 0.0198 Density at Inlet: 0.041 Specific Volume at Inlet: 24.163 Specific Heat Ratio: 1.4 Straight Duct Loss (inches Water): 0.002 Hood Entry Type: None Duct Exit Configuration: Vertical Discharge, No Loss Exit Configuration Loss (inches Water): 0 Total Duct Loss (inches Water): 0.002Velocity Pressure (inches Water): 0.004

10 4/14/2003 10 NSTX TF Bundle & Center Stack Curing Oven Heaters: 480 3Ø require a minimum of 6 ft/sec @ 650ºF Heater duct is 12”x24” ∴ min flow required is 750 CFM Blower: Radial fan to provide high flow rates @ pressure Max Temp is 600ºF 208 3Ø Insulation: 2”

11 4/14/2003 11 NSTX TF Bundle & Center Stack Curing Oven ThicknessTempWatts 11067376 1.5955156 2893977 INSULATION

12 4/14/2003 12 NSTX TF Bundle & Center Stack Curing Oven Mass: TF Bundle 2820 lbs. Mold 4500 lbs. Oven 7400 lbs. Thermal units: Thermal ConductivitySpecific Heat BTU/h (ft) ºFBTU/(lb) ºF Copper227.092 Steel 9.4.12 Air.018 Heat needed: Q=m Cp ΔT=lb (BTU/lb ºF) ºF QCopper=2820 (.092) (392-70)=83,540 BTU QSteel=11900 (.12) (392-70)=459,816 BTU QTotal=543,356 BTU 1 KW=3412.14BTU/h QTot=159 KW-hours for a 9 hours rise=17.7 KW/hour Convection heat transferred: q=h A ΔT Initially q=(8 BTU/h (ft2) ºF) 25 ft2 (392-70) = 64,400 BTU/h = 18.8 KW Final q=(8 BTU/h (ft2) ºF) 25 ft2 (400-392) = 1,600 BTU/h = 1 KW Plus losses through insulation: 4 KW

13 4/14/2003 13 NSTX TF Bundle & Center Stack Curing Oven

14 4/14/2003 14 NSTX TF Bundle & Center Stack Curing Oven

15 4/14/2003 15 NSTX TF Bundle & Center Stack Curing Oven

16 4/14/2003 16 NSTX TF Bundle & Center Stack Curing Oven

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