ME-305, Tutorial: 5, (External Convection)
Date: 08.10.2012
Prob.1:
Water at 20oC and 1 atm pressure flows over a flat plate at a speed of 0.5 m/s. The width of the
plate is 1 m. The entire plate is heated to a temperature of 60oC. Calculate the heat tran

ME-305, Tutorial: 9, (Radiation Heat Transfer)
Date: 09.11.2012
Prob. 1:
A small surface area of A = 1 cm2 emits radiation as a blackbody at 1800 K. Determine the rate
at which radiation energy is emitted through a band defined by 0 2 and 45 o 60o,
where

ME-305, Tutorial: 8, (Boiling and Condensation)
Date: 29.10.2012
Prob. 1:
A 65 cm long, 2 cm diameter brass heating element is to be used to boil water at 120 oC. If the
surface temperature of the heating element is not to exceed 125 oC, determine the rat

ME-305, Tutorial: 6(Internal flow convection)
Date: 10.10.2012
Prob. 1:
Consider the flow of oil at 10oC in a 40-cm-diameter pipeline at an average velocity of 0.5 m/s.
A 1500-m-long section of the pipeline passes through icy waters of a lake at 0oC. Meas

ME-305, Tutorial: 7 (Natural Convection),
Date: 15.10.2012
Prob. 1:
A horizontal circular grill of diameter 0.25 and emissivity 0.9 is maintained at a constant surface
temperature of 130 oC. What electric power is required when the room air and surroundin

ME-305, Tutorial: 4, Date: 27.09.2012
Prob. 1: In flow over a surface, velocity and temperature profiles are the forms
u ( y ) = Ay + By 2 Cy 3
T ( y ) = D + Ey + Fy 2 Gy 3
Where the coefficients A to G are constants. Obtain expressions for the friction c

A lecture on
Introduction to Heat Exchanger
(ME-305: Heat and Mass Transfer)
Dr. Manabendra Pathak
Department of Mechanical Engineering
Indian Institute of Technology Patna
Patna-800013, Bihar, India
Definitions and applications of heat exchangers
Applica