Calculation of Furnace Losses

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Calculation of Furnace Losses
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Furnace Heat Losses

• Conductive heat losses
• Convection heat losses
• Cooling losses
• Sting outs

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Conduction Through an Insulated Wall

• Calculate the heat loss through a 4 x 8 ft wall
• First layer 9 Greenlite 3000
• 2nd layer 4.5 B W delta
• 3rd layer 4.5 Greenlite 28
• 4th layer 1 JM Superex 1600F
• Hotside is 2400 degF
• Coldside is 75degF

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Go To Furnace Losses

• Click on furnace losses

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Miscellaneous Walls

• Click on Misc walls
• Show bricks by clicking on arrow to the right of
  the name
• Select a brick from list

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Enter data

• Click on Depth to Enter a Value
• Enter Hot and Cold Side Temperatures

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Calculate Heat Loss

• Click on calc
• Calculated heat loss through wall is 6304 MBU/hr
• Notice that hotside temperature for BW delta
  exceeds max workable temperature (1900 degF)

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More Bricks

• This is great but what if my bricks are not shown
  in the database ?
• Then you have to add your bricks to the database.
• Ill show you how.

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Adding Bricks

• From Menu Select Edit Bricks
• Click on Name
• Type in your new Name

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Adding New Bricks

• Select type of brick
• Enter conductivity for at least one temperature
• Enter max working temperature

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Add New Bricks

• Click on add

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Add new bricks

• and there it is !
• Thats all there is to it !

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Sting Outs

• Sting Outs Are Heat Losses Through Openings in
  the Wall

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Sting Outs

• Select sting outs from menu
• Enter opening size
• Enter hotside and coldside temperatures
• Click on calc

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Water Cooling

• Calculates Heat Losses From Cooling Water

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Water Cooling

• Select cooling from top menu
• Enter inlet and outlet temperatures
• Enter cooling water flow rate
• Click on calc

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Help Menus
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Furnace Losses
Click here to see calculations