Engineering, 13.11.2019 03:31 kellypechacekoyc1b3

Oil at 15°c is to be heated by saturated steam at 1 atm in a double-pipe heat exchanger to a temperature of 25°c. the inner and outer diameters of the annular space are 3 cm and 5 cm, respectively, and oil enters with a mean velocity of 0.8 m/s. the inner tube may be assumed to be isothermal at 100°c, and the outer tube is well insulated. assuming fully developed flow for oil, determine the tube length required to heat the oil to the indicated temperature. in reality, will you need a shorter or longer tube? explain.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, Strick1530

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

Answers: 2

continue

Engineering, 04.07.2019 19:10, rayne40

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?

Answers: 3

continue

Engineering, 06.07.2019 02:30, Nonniel0v3

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?

Answers: 3

continue

Engineering, 06.07.2019 03:10, tatedason33741

Asolid steel sphere (k=63.9 w m-1 k-1 , ? =7832 kg m-3 , c=0.523 kj kg-1 k-1 ), 100 mm in diameter is initially at a uniform temperature of 500o c and is suddenly quenched in a large oil bath for which t? = 100o c and h = 3200 w m-2 k-1. estimate the time required for the sphere to cool to 200o c and to 110o c

Answers: 1

continue

You know the right answer?

Oil at 15°c is to be heated by saturated steam at 1 atm in a double-pipe heat exchanger to a tempera...