Scribd
Upload
68 views7 pages

Trial & Error Questions

This document discusses heat transfer through pipes, including calculating heat transfer coefficients, overall heat transfer coefficients, and heat transfer rates for pipes with water flowing through and being heated by condensing steam on the outside. It also includes predicting the heat transfer coefficient and outlet temperature of water flowing through a pipe with a constant inside surface temperature.

Uploaded by

muhamadnakhaie
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
68 views7 pages

Trial & Error Questions

This document discusses heat transfer through pipes, including calculating heat transfer coefficients, overall heat transfer coefficients, and heat transfer rates for pipes with water flowing through and being heated by condensing steam on the outside. It also includes predicting the heat transfer coefficient and outlet temperature of water flowing through a pipe with a constant inside surface temperature.

Uploaded by

muhamadnakhaie
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 7

LOGO

Problems Require Trials & Errors

Water is flowing in a 5-meter horizontal 2-inch Schedule 80 steel pipe at an average


temperature of 65.6 ˚C and a velocity of 3 m/s. It is being heated by condensing steam at 110
˚C on the outside of the pipe wall. The steam-side coefficient has been estimated as ho =
9000 W/m2.K.

(a) Calculate the convective coefficient hi for water inside the pipe.
(b) Calculate the overall coefficient Uo based on the outside surface area of the pipe.
(b) Calculate the heat transfer rate, q of the pipe with the water.
LOGO
Problems Require Trials & Errors
LOGO
LOGO

Water at 30 ˚C enter inside a 3-meter horizontal 1.5-inch Schedule 40 steel pipe at a flow rate
of 60 kg/hr. The inside pipe surface is assumed constant at 120 ˚C since steam is condensing
outside the pipe wall and has a very large heat transfer coefficient. Predict the heat transfer
coefficient and the water outlet temperature, Tbo
LOGO
LOGO
LOGO

You might also like