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CFD Studies on Multi Lead Rifled [MLR] Boiler Tubes

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Author(s): Dr T C Mohankumar

Journal: International Journal of Engineering Research and Applications
ISSN 2248-9622

Volume: 3;
Issue: 5;
Start page: 24;
Date: 2013;
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Keywords: CFD | Coal fired water tube boiler | Geometrical parameters | Multi Lead Rifled [MLR] tube | Operating conditions

ABSTRACT
This paper reports the merits of multi lead rifled [MLR] tubes in vertical water tube boiler using CFD tool. Heat transfer enhancement of MLR tubes was mainly taken in to consideration. Performance of multi lead rifled tube was studied by varying its influencing geometrical parameter like number of rifling, height of rifling, length of pitch of rifling for a particular length. The heat transfer analysis was done at operating conditions of an actual coal fired water tube boiler situated at Apollo Tyres LTD, Chalakudy, India for saturated process steam production. The results showed that the heat transfer increased when compared with existing inner plane wall water tubes.
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