get high temperature above 600C

[hesham]

hello,

I need to get an air flow(in a 1 inch pipe) with a temperature above 600C. I tried to use electrical heaters but it didn't work above 300C. what do you think? a flame tourch will be suitable?

[dudleybenton]

I collected a lot of experimental data for heat transfer on surfaces from 280C to 620C. Electric resistance heat was not adequate for the higher temperatures and so I used a natural gas flame. Propane would also work well. MAPP gas would not be suitable for this.

[hesham]

thanks for your reply.

do you recommend a specific model or type? it will be great if it is in Amazon

and why MAPP gas would not be suitable for this?

thanks again

[dudleybenton]

Most any gas burner would suffice. MAPP gas is used for localized applications such as brazing. You need more spread-out heating. Make sure you calibrate your instruments. The easiest way to do this for thermocouples is with multiple liquids (or solids) that have known boiling (or melting) temperatures at one atmosphere. You need at least 3 known points. Don't just assume some thing that reads temperature or pressure is accurate, regardless of how much it costs. Don't calibrate one instrument off another unless the reference one has a recent NIST-traceable pedigree. I have proven in the laboratory that accuracy is not proportional to cost. I always run calibrations before and after each experiment.