Cold water (cp 5 4180 J/kg?K) enters the tubes of a heat exchanger with 2-shell passes and 20-tube passes at 208C at a rate of 3 kg/s, while hot oil (cp 5 2200 J/kg?K) enters the shell at 1308C at the same mass flow rate and leaves at 608C. If the overall heat transfer coefficient based on the outer surface of the tube is 220 W/m2 ?K, determine (a) the rate of heat transfer and (b) the heat transfer surface area on the outer side of the tube.

Cold water (cp 5 4180 J/kg?K) enters the tubes of a heat exchanger with 2-shell passes and 20-tube passes at 208C at a rate of 3 kg/s, while hot oil (cp 5 2200 J/kg?K) enters the shell at 1308C at the same mass flow rate and leaves at 608C. If the overall heat transfer coefficient based on the outer surface of the tube is 220 W/m2 ?K, determine (a) the rate of heat transfer and (b) the heat transfer surface area on the outer side of the tube.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.13P

See similar textbooks

Similar questions

Water flowing in a long, aluminum lube is to be heated by air flowing perpendicular to the exterior of the tube. The ID of the tube is 1.85 cm, and its OD is 2.3 cm. The mass flow rate of the water through the tube is 0.65kg/s, and the temperature of the water in the lube averages 30C. The free-stream velocity and ambient temperature of the air are 10m/sand120C, respectively. Estimate the overall heat transfer coefficient for the heat exchanger using appropriate correlations from previous chapters. State all your assumptions.
10.1 In a heat exchanger, as shown in the accompanying figure, air flows over brass tubes of 1.8-cm 1D and 2.1-cm OD containing steam. The convection heat transfer coefficients on the air and steam sides of the tubes are , respectively. Calculate the overall heal transfer coefficient for the heal exchanger (a) based on the inner tube area and (b) based on the outer tube area.
A shell-and-tube heat exchanger with 2 shell passes and 12 tube passes is used to heat water (cp = 4180 J/kg•K) in the tubes from 20 °C to 70 °C at a rate of 4, 5 kg/sec. Heat is supplied by hot oil (cp = 2300 J/kg•K) entering the shell side at 170 °C at a rate of 10 kg/s. For a total heat transfer coefficient on the tube side of 350 W/m²•K, determine the area of the heat transfer surface on the tube side. Mainly, I also need the solution from concepts of how the heat flow behaves in the system, it can be with a diagram.
A shell-and-tube heat exchanger with 1-shell pass and14-tube passes is used to heat water in the tubes with geothermal steam condensing at 1208C (hfg 5 2203 kJ/kg) on the shellside. The tubes are thin-walled and have a diameter of 2.4 cmand length of 3.2 m per pass. Water (cp 5 4180 J/kg?K) entersthe tubes at 228C at a rate of 3.9 kg/s. If the temperature difference between the two fluids at the exit is 468C, determine(a) the rate of heat transfer, (b) the rate of condensation ofsteam, and (c) the overall heat transfer coefficient.
A shell-and-tube heat exchanger with 2-shell passes and 12-tube passes is used to heat water (cp = 4180 J/kg·K) in the tubes from 20°C to 70°C at a rate of 4.5 kg/s. Heat is supplied by hot oil (cp = 2300 J/kg·K) that enters the shell side at 170°C at a rate of 10 kg/s. For a tube-side overall heat transfer coefficient of 350 W/m2·K, determine the heat transfer surface area on the tube side.
A shell-and-tube heat exchanger with 2-shell passes and 12-tube passes is used to heat water (cp = 4.18 kJ/kg·K) in the tubes from 20°C to 70°C at a rate of 4.5 kg/s. Heat is supplied by hot oil (cp = 2.3 kJ/kg·K) that enters the shell side at 170°C at a rate of 10 kg/s. For a tube-side overall heat transfer coefficient of 350 W/m2.K, determine the heat transfer surface area on the tube side. Assume the correction factor F to be 1. (Round the answer to two decimal places.)
A shell and tube heat exchanger is designed as a counter to cool a mass flow rate of 60 kg/h of engine oil (cp = 1060 J/kg oC) from 300oC to 150oC. The cooling water, cp = 4182 J/kgoC, enters the tube side (Length is 1.75 m and Outer diameter is 2.54 cm) at a temperature of 20oC. If the overall heat transfer coefficient, U, is 10.83 W/m2o C and the Capacity Ratio of the Heat Exchanger is 2.4, calculate the following: a)The heat transfer rate,b)The mass flow rate of the cooling water in the units of (kg/h),C)The surface area of the heat exchanger,