A semi-analytical model is presented for the evaluation of the performance factor of the inlet zone of an E type shell and tube heat exchanger without leakage flows. The performance factor is defined as the ratio of dimensionless heat transfer coefficients and pressure drops of both vertical and horizontal baffle orientation and therefore facilitates the decision between horizontal and vertical baffle orientation of shell and tube heat exchangers. The model allows the calculation of the performance factor of the inlet zone as a function of the baffle cut, the shell-side Reynolds number at the inlet nozzle and the Prandtl number of the shell-side fluid. The application of the model requires the knowledge of the performance factor of water at baffle cut equal to 24% of the shell inside diameter. For the development of the model a numerical data basis is used due to the lack of experimental data for shell and tube heat exchangers with different baffle orientations. The numerical data are obtained from CFD calculations for steady state conditions within a segmentally baffled shell and tube heat exchanger following the TEMA standards. Air, water and engine oil with Prandtl numbers in the range of 0.7 to 206 are used as shell-side fluids. The semi-analytical model introduced for the performance factor predicts the CFD results with a relative absolute error less than 5%. The presented model has to be validated with further experimental data and/or numerical results which explain the effect of baffle orientation on the shell-side heat transfer coefficient and pressure drop in order to check the general applicability.
Skip Nav Destination
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4939-2
PROCEEDINGS PAPER
Semi-Analytical Calculation of the Inlet Zone Performance of Ideal Shell and Tube Heat Exchangers Available to Purchase
K. Mohammadi,
K. Mohammadi
University of Stuttgart, Stuttgart, Germany
Search for other works by this author on:
W. Heidemann,
W. Heidemann
University of Stuttgart, Stuttgart, Germany
Search for other works by this author on:
H. Mu¨ller-Steinhagen
H. Mu¨ller-Steinhagen
University of Stuttgart; German Aerospace Centre, Stuttgart, Germany
Search for other works by this author on:
K. Mohammadi
University of Stuttgart, Stuttgart, Germany
W. Heidemann
University of Stuttgart, Stuttgart, Germany
H. Mu¨ller-Steinhagen
University of Stuttgart; German Aerospace Centre, Stuttgart, Germany
Paper No:
IHTC14-22276, pp. 279-288; 10 pages
Published Online:
March 1, 2011
Citation
Mohammadi, K, Heidemann, W, & Mu¨ller-Steinhagen, H. "Semi-Analytical Calculation of the Inlet Zone Performance of Ideal Shell and Tube Heat Exchangers." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 4. Washington, DC, USA. August 8–13, 2010. pp. 279-288. ASME. https://doi.org/10.1115/IHTC14-22276
Download citation file:
10
Views
Related Proceedings Papers
Related Articles
Experimental Investigation of Coil Curvature Effect on Heat Transfer and Pressure Drop Characteristics of Shell and Coil Heat Exchanger
J. Thermal Sci. Eng. Appl (March,2015)
An Experimental Study of Shell-and-Tube Heat Exchangers With Continuous Helical Baffles
J. Heat Transfer (October,2007)
Prandtl Number Influence on Heat Transfer Enhancement in Turbulent Flow of Water at Low Temperatures
J. Heat Transfer (May,1995)
Related Chapters
Engineering and Physical Modeling of Power Plant Cooling Systems
Thermal Power Plant Cooling: Context and Engineering
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Basics of Hydraulic Loops
Hydraulics, Pipe Flow, Industrial HVAC & Utility Systems: Mister Mech Mentor, Vol. 1