Tubular Airheater Design
Tubular Airheater Design
(OP)
We are repairing a tubular airheater in a stoker coal fired power boiler. Expected exhaust gas temperature at under 450 deg. F. Scheduling has forced us to look at available practical material options. What is the effect of a change from 2" OD x.083"T to 2" OD x .095"T on operation? Is ASTM A 513T (1010) a suitable material?





RE: Tubular Airheater Design
RE: Tubular Airheater Design
RE: Tubular Airheater Design
In terms of the operation, having a thicker tube wall will decrease the ID of your tubes, reducing the total surface area available for gas flow. Since air heaters are designed with some extra surface area to allow for tube plugging, there shouldn't be a problem. By using those tubes, you reduce the flow area by 2.6%. I've seen airheaters with almost 15% of their tubes plugged off.
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RE: Tubular Airheater Design
RE: Tubular Airheater Design
RE: Tubular Airheater Design