Process Heat Transfer Course Code: CHPE302 Lecturer: Dr. Abdul Ameer Bandar (Associated Professor) Office Number: 5D-46 E-mail: abdulameer@uniwa.edu.om

Course Description This course deals with the design and analysis of heat transfer equipment used in chemical and petroleum industries. Different design methadologies are presented such LMTD and Effectiveness & Ntu methods. Equipment covered are: double pipe, shell and tube heat exchanger, plate heat exchanger, condensers, evaporators, furnaces. Introduction in heat exchangers network is provided.

Learning Outcome At the end of this course, students are able to:   Be familiar with the all types of heat transfer equipment. 2. To get acquainted with simple heat transfer unit “Double Pipe exchanger”. 3. Be familiar with ideas about selecting different type of shell and tube exchanger. 4. Be familiar with the evaporators, condenser. 5. Be familiar with furnaces and fired heaters. 6. Be familiar with the basics of heat exchangers networks.

Reviewing Procedure A peer review practice will be applied to all presentations. The student should submit their presentation 2 days in advance to the reviewing group. The reviewing group should meet and submit not more than 1 page of comments and recommendations. The student should take action on these comments by revising their presentation based on these comments. 4

Assignment format The student required to submit the hard copy of the assignment. The hard copy should not exceed 10 pages A4 size, including front page, appendices, etc.). The text should be made in 12pt font using Times New Roman style with 1.5 line spacing. Finally, references should be written in standard scientific way (check the literature). 5

Contents Review Reviews the related concepts on forced convection through smooth and rough pipes. 2. Classification of heat exchangers Structural diagram on the classification of various heat exchangers used in the industries with special emphasis on double pipe, shell and tube, plate heat exchangers. 3. Heat exchanger design methodologies Various design methods introduced such LMTD and effective & NNu methods, analysis of temperature difference related to different flow arrangement and different configurations. (3 hours) (6 hours) Double Pipe Heat exchangers Design and rating of double pipe heat exchanger Shell and Tube Heat exchangers Design and rating of various type of shell and tube and pressure drop calculations   Plate Heat exchangers Design of plate heat exchangers Boiling and condensation Present the thoery of condensation and boiling, design of simple binary condenser and evaporators

4. Double Pipe Heat exchangers Design and rating of double pipe heat exchanger 5. Shell and Tube Heat exchangers Design and rating of various type of shell and tube and pressure drop calculations   6. Plate Heat exchangers Design of plate heat exchangers 7. Boiling and condensation Present the theory of condensation and boiling, design of simple binary condenser and evaporators. (3 hours) (9 hours) (6 hours) Double Pipe Heat exchangers Design and rating of double pipe heat exchanger Shell and Tube Heat exchangers Design and rating of various type of shell and tube and pressure drop calculations   Plate Heat exchangers Design of plate heat exchangers Boiling and condensation Present the thoery of condensation and boiling, design of simple binary condenser and evaporators

8. Fired Heater and Furnaces Introduction of fired heater and furnaces and their various aspect of designs and components. 9. Introduction on heat exchangers networks Total (6 hours) (45 hours)

ASSESSMENTS Course Works Test 40% Quiz and Assignment 10% and project or presentation 10% Final Examination 40%

D. Q. Kern, Process Heat Transfer, McGraw Hill, 1950 REFERENCES R. K. Sinnott, Chemical Engineering Design, Volume 6 (4th Edition), Elsevier Butterworth Heinmann, 2006 D. Q. Kern, Process Heat Transfer, McGraw Hill, 1950 Geankoplis, C. J., “Transport Process and Separation Process Principles”, 4th Edition, 2006. Text Book Additional Reference Texts:

Background Steady State Heat Transfer: The transfer of energy in the form of heat occurs in many chemical and other types of process. Thermal Energy Balance equation (Heat transfer): Rate of heat in + Rate of generation of heat = Rate of heat out + Rate of accumulation of heat Basic Mechanisms of Heat Transfer Conduction: heat can be conducted through solids, liquids, and gas Convection: the transfer of heat by convection implies the transfer of heat by bulk transport and mixing of microscopic elements of warmer portions with cooler portions of a gas or a liquid. Radiation: Radiation differs from heat transfer by conduction and convection in that no physical medium is needed for its propagation. Radiation is the transfer of energy through space by means of electromagnetic waves.

Fourier’s law of heat conduction: The basic equation is: Rate of transfer process = (driving force/resistance) (qx/A) = -k (dT/dx) Where qx is the heat-transfer rate in the x direction in Watts (W), A is the cross sectional area in m2, T is the temperature in K. x is distance in m and k s the thermal conductivity in (W/m.K). q/A = k(T1-T2)/(x2-x1) Thermal Conductivity of some material at 101 kp pressure and k in (W/m.K):

Convective-Heat Transfer Coefficient When the fluid outside the solid surface is in forced or natural convective motion, the rate of heat transfer from the solids the heat-transfer rate in W, A is the area in m2, the rate of heat transfer from the solid to the fluid, or vice versa is expressed by the following equation: Q = hA(Tw-Tf) Where q is the heat-transfer rate in W, A is the area in m2, Tw is the temperature of the solid surface in K, Tf is the average or bulk temperature of the fluid flowing by in K and h is the convective heat-transfer coefficient in W/m2.K in English units, h is in btu/h.ft2.F. The coefficient h is a function of the system geometry, fluid properties, flow velocity, and temperature difference.

Combined Convection and Conduction and Overall Coefficients: Dr Mustafa Nasser @2010

Dr Mustafa Nasser @2010

Dr Mustafa Nasser @2010

Dr Mustafa Nasser @2010