Heat Exchanger and its types – Engineering Solutions, Heat Transfer by Shell and Tube Heat Exchangers – TEMA …
Heat Exchanger and its types – Engineering Solutions, Heat Exchanger and its types – Engineering Solutions, OTL stands for Outer Tube Limit (heat exchangers), The pressure a heat exchanger is actually operating at while in use. Outer Tube Limit The O.T.L. is the diameter created by encircling the outer most tubes in a tube layout. The design O.T.L. is used by engineers to calculate clearances between bundle parts. The actual O.T.L. is usually a few thousandths less than the design O.T.L. Packed End, TC,O TL TC TL . (10) From Equations (1) to (10), the work output is one degree of freedom as a function of TW,O or TC,O. Then the work output can be maximized by ¶W/¶TW,O = 0 or ¶W/¶TC,O = 0. The maximum work considering the heat exchanger performance Wm,NTU is expressed as: Wm,NTU = r(1 r)CHSDTHS f, (11), 1. Highly ef? cient heat transfer – small annulus between outer tube limit ( O.T.L .) and shell I.D. 2. Threaded “O” ring retainer permits tube inspection and cleaning without releasing shellside pressure. 3. Leaks easily detected – mixing or contamination of ? uids eliminated. 4. Channel covers and return heads are easily removable for, The O.T.L . is the diameter created by encircling the outer most tubes in a tube layout. The design O.T.L . is used by engineers to calculate clearances between bundle parts. The actual O.T.L . is usually a few thousandths less than the design O.T.L . Packed End The end of a heat exchanger …
