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,

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,

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 10.14P

See similar textbooks

Similar questions

What is the main difference between a copper and a cupronickel coaxial heat exchanger, and where is each used?
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 is designed as a counter flow type. Water (cp = 4182 J/kg.oC)enters the shell side at 30 oC with a mass flow rate of 12.5 kg/s. A mass flow rate of 19.5 kg/s of engine oil (cp = 1060 J/kg.oC), enters the tube side at 300 oC. Each tube is having an inner diameter of 36 mm and a wall thickness of 2 mm, and a length of 3 m. If the heat exchanger effectiveness is60 %, calculate the following: a) The tube side surface area if the overall heat transfer coefficient is 1586 W/m2. oC,b) The number of tubes used in the heat exchanger,
A shell and tube heat exchanger is designed as a counter flow type. Water (cp = 4182 J/kg.o C)enters the shell side at 30 o C with a mass flow rate of 12.5 kg/s. A mass flow rate of 19.5 kg/s of engine oil (cp = 1060 J/kg.oC), enters the tube side at 300 oC. Each tube is having an inner diameter of 36 mm and a wall thickness of 2 mm, and a length of 3 m. If the heat exchanger effectiveness is 60 %, calculate the following: a). The temperature efficiency of the heat exchanger, andb). The capacity ratio of the heat exchanger.
How do we calculate the heat transfer of a shell and tube heat exchanger.?
Explain the role of the baffles in a shell-and-tube heat exchanger as well as how the presence of these baffles affects the heat transfer and the pumping power requirements?
A shell-and-tube heat exchanger with 2-shell passes and 8-tube passes is used to heat ethyl alcohol (cp = 2670 J/kg·K) in the tubes from 25°C to 70°C at a rate of 2.1 kg/s. The heating is to be done by water (cp = 4190 J/kg·K) that enters the shell side at 95°C and leaves at 45°C. If the overall heat transfer coefficient is 950 W/m2·K, determine the heat transfer surface area of the heat exchanger
A body-and-tube heat exchanger with 2 shells and 8 tubes is used to heat ethyl alcohol (cp=2670J/kg.°C) from 25 °C to 70 °C with a flow rate of 2.1 kg/s in pipes with a diameter of 3 cm. Heating It is made with water that enters the body at 95 °C and leaves at 60 °C (cp=4190J/kg.°C). If the total heat transfer coefficient is 800 W/m2.°C, calculate the total length of the heat exchanger using the Ɛ-NTU method.
A counter-flow heat exchanger is stated to have an overall heat transfer coefficient of 284 W/m2·K when operating at design and clean conditions. Hot fluid enters the tube side at 93°C and exits at 71°C, while cold fluid enters the shell side at 27°C and exits at 38°C. After a period of use, built-up scale in the heat exchanger gives a fouling factor of 0.0004 m2·K/W. If the surface area is 93 m2, determine (a) the rate of heat transfer in the heat exchanger and (b) the mass flow rates of both hot and cold fluids. Assume both hot and cold fluids have a specific heat of 4.2 kJ/kg·K.
To cool the lubricating oil, a concentric counter-flow heat exchanger is utilized, with the water flowing via an internal pipe with an internal diameter of 0.02 m and a flow rate of 0.18 kg/s. The intake and output oil temperatures are 95ºC and 65ºC, respectively, as the oil runs through the outer annulus (0.04 m) at a flow rate of 0.12 kg/s. The water enters the heat exchanger at a temperature of 30ºC. Stating all the necessary assumptions, (a) determine required length of the pipe. (b) Considering the effect of fouling during operation through time and the heat transfer resistance would be affected, discuss the design and operation considerations to minimize the fouling problem on the opertion of the heat exchanger during design and operation stages. Consider average value of Engine oil property: Cp=2131 J/kgoC; μ=0.0325 Ns/m2; K=0.138 W/moC Consider average value of water properties: Cp=4174 J/kgoC; μ=725x 10-6 Ns/m2; K=0.138 W/moC; Pr=4.85 Please clear Answer words