HEAT TRANSFER ͳ THEORETICAL ANALYSIS, EXPERIMENTAL INVESTIGATIONS AND INDUSTRIAL SYSTEMS Edited by Aziz Belmiloudi Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems Edited by Aziz Belmiloudi Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2011 InTech All chapters are Open Access articles distributed under the Creative Commons Non Commercial Share Alike Attribution 3.0 license, which permits to copy, distribute, transmit, and adapt the work in any medium, so long as the original work is properly cited. After this work has been published by InTech, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published articles. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book. Publishing Process Manager Iva Lipovic Technical Editor Teodora Smiljanic Cover Designer Martina Sirotic Image Copyright Pakhnyushcha, 2010. Used under license from Shutterstock.com First published January, 2011 Printed in India A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems, Edited by Aziz Belmiloudi p. cm. ISBN 978-953-307-226-5 free online editions of InTech Books and Journals can be found at www.intechopen.com [...]... calculated the average predicted heat transfer coefficient of the refrigerant using Kosky and Staub’s model (1971) and the Von Karman universal velocity distribution correlations by means of different interfacial shear stress equations valid for annular flow in horizontal and vertical tubes in order to validate 18 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems Chen... Rel>1125 Chato (1961) Akers and 0.8 1/3 Rosson Nu = 0.0265Re eq Prl (1960) Tandon et Re > 30000 g al (1995) Re eq = Geq d μl ( Geq = G ⎡(1 − x ) + x ρ l / ρ g ⎢ ⎣ ⎡ 1 ⎤ Nu = 0.084 Re g 0.67 Prl 1/3 ⎢ ⎥ ⎣ Jal ⎦ 1/6 Table 2 Annular flow heat transfer correlations and models Jal = Cpl ΔTsat i fg ) 0.5 ⎤ ⎥ ⎦ 24 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems 7000 h... distribution, therefore ASTM standard D-5757 attrition test method was selected for the present study and operated under standard operating procedure, in the density range of 1-3 g/cm3 [12] The flow regime changes with density variations and fluidization velocities, but settling chamber provides 8 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems 0.4 ZSM-5 0.098... propylene, Industrial & Engineering Chemistry Research, 49 (2010) 1274–1280 [17] Zeeshan Nawaz and Wei Fei, The Pt-Sn-based SAPO-34 supported novel catalyst for nbutane dehydrogenation, Industrial & Engineering Chemistry Research, 48 (2009) 7442-7447 14 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems [18] Zeeshan Nawaz, Tang Xiaoping, Shahid Naveed, Qing Shu and Fei... horizontal, inclined and vertical positions to have a wellknown wide-range applicable correlation Finally, it has been compared by researchers 16 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems commonly for turbulent condensation conditions and it is considered to be the most predictive condensation model for the annular flow regime in a tube Oh and Revankar (2005)... their model Dalkilic and Wongwises (2009d) reported a detailed review of research on in-tube condensation by reason of its significance in refrigeration, air conditioning and heat pump applications The heat transfer and pressure drop investigations for the in-tube condensation were included and almost all relevant research subjects were summarized, such as condensation heat transfer and pressure drop... condensation heat transfer correlations for smooth and micro-fin tubes including the comparison of experimental data belong to various experimental conditions from different researchers Wang and Honda (2003) made a comparison of well-known heat transfer models with experimental data belong to various refrigerants from literature and proposed some models, valid for the modified annular and stratified... propylene It is observed that the propylene selectivity in a fluidized bed reactor was improved after 1 hr 10 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems operation, when the reactor reaches steady state conditions The steady and uniform conversion and yield is also achieved Actually, in fixed bed reactor coke deposition is high as compared to fluidized bed... symmetrical flow, and no jammed was observed This phenomenon was captured from 2D co-fluidized bed and shown in Figure 2 [8] 3.2 Hydrodynamics of co-fluidization After fundamental description of the role of the bubbles in a bi-modal fluidized bed, hydrodynamic of FCC particles with coarse particles was investigated On the whole, 6 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial. .. comprehensive overview of 4 Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems GSS-FRB research was discussed with practical example of direct propane dehydrogenation reaction Direct propane dehydrogenation is complicated in engineering constraints due to equilibrium limitations and endothermic nature of reaction, therefore, continuous supply of heat is required The superiority . HEAT TRANSFER ͳ THEORETICAL ANALYSIS, EXPERIMENTAL INVESTIGATIONS AND INDUSTRIAL SYSTEMS Edited by Aziz Belmiloudi Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial. and fluidization velocities, but settling chamber provides Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems 8 0.0 0 .1 0.2 0.3 0.4 1. 0 1. 2 1. 4 1. 6 0 1 2 3 4 AJI . Lel and Reinhold Kneer Heat Transfer to Fluids at Supercritical Pressures 4 81 Igor Pioro and Sarah Mokry Fouling of Heat Transfer Surfaces 505 Mostafa M. Awad Chapter 10 Chapter 11 Chapter 12 Part