ChemicalJasper
Petroleum
- Jan 4, 2008
- 3
Help Please!
I need to calculate the heat transfer down a steel pipe, any ideas on how to do this please?
We are replacing a section of line, using a Stopple and bypass. The steel line contained a Hydrogen rich stream and where the new flanges are to be welded (after cutting out the thinned section), the line requires a Hydrogen bake-out before welding.
Due to space constraints there is only 700-750 mm between the stopple and bake-out heating element. How do I work out if the heat from the bakeout will reach and effect the integrity of the stopple?
The heat will be applied using 2 x 6" wide 45 Amp, 65 volt heating elements at a temperature of 400 C. the pipe is an unlagged 6mm CS and 6" ID.
Any hints or tips will be greatly appreciated.
I need to calculate the heat transfer down a steel pipe, any ideas on how to do this please?
We are replacing a section of line, using a Stopple and bypass. The steel line contained a Hydrogen rich stream and where the new flanges are to be welded (after cutting out the thinned section), the line requires a Hydrogen bake-out before welding.
Due to space constraints there is only 700-750 mm between the stopple and bake-out heating element. How do I work out if the heat from the bakeout will reach and effect the integrity of the stopple?
The heat will be applied using 2 x 6" wide 45 Amp, 65 volt heating elements at a temperature of 400 C. the pipe is an unlagged 6mm CS and 6" ID.
Any hints or tips will be greatly appreciated.
