Hot service insluation thicknesses, Mechanical Engineering

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Q. Hot Service Insluation Thicknesses?

Hot Service Insluation Thicknesses are specified based on the following design criteria:

• Average Annual Climatic Conditions: Fort McMurray, Alberta

• Straight payout period: 5 years

• Heat Loss Calculation Program: North Am. Ins. Manufacturers Ass. 3E Version 3.2

• Hours of operation: 39420 (90% of number of hours in 5 years)

• Bare surface emittance : 0.8 emittance Steel

• Outside surface emittance: 0.1 Aluminum

• Energy conversion efficiency: 70% for Hot Service

• Fuel type: Natural gas

• Fuel heat content: 0.0382 GJ/m³

• Fuel cost: $5/GJ

• Pipe and Insulation dimensions per ASTM C 585

• Yearly outdoor ave. amb. Temp.: 0.2°C (32.4 °F)

• Yearly outdoor ave. wind vel.: 10 km/h

• Indoor ave. Temp.: 15ºC

• Indoor ave. wind vel.: 0 km/h

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