i was told that it's not a shell and tube heat exchanger... any ideas?
2007-02-07 07:52:13 · 3 answers · asked by asta 1 in Science & Mathematics ➔ Engineering
Yeah, it's basically a shell and tube exchanger. It acts like one anyway. The economizer is a bunch of tubes with fins on them. The water is heated by the flue gas passing over it.
It's not in a specific shell. The fluid being heated is inside the tubes, whereas a shell & tube exchange usually has the fluid being heated going over the tubes. Other than that it is functionally the same.
It doesn't matter that it's a fluidized bed boiler. Economizers function the same for all boilers (pulverized coal, oil fired, etc)
Who's asking? If it is the person who told you it's not a shell & tube, and he's sending you on a trivia mission, tell him to f&$# off as he's likely sat behind a desk his whole life. People who actually work the stuff care about functionilty not trivia.
2007-02-07 10:08:01 · answer #1 · answered by Arthur M 4 · 0⤊ 0⤋
Firstly A boiler is an Evaporator, secondly an economiser is a heat exchanger situated in the flu gas uptake used to heat the feed water entering the boiler drum to saturation temperature before it reaches the boiler drum.
2007-02-08 08:25:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well, technically a boiler is a classification of a type of heat exchanger of it's own. While many of the principles that apply to shell and tube exchangers can be applied to these boiler components, you can't really call it a shell and tube exchanger.
2007-02-07 20:29:58 · answer #3 · answered by Jeffrey S 6 · 0⤊ 0⤋