2009 cw q - CENG1001 Transport Processes I Deadlines Qu 1 2...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CENG1001 Transport Processes I Coursework Deadlines: Qu 1 & 2 : Friday 18 th December 2009 Qu 3 & 4: Friday 15 th January 2010 1. 2009, Q6 Heat is conducted through a large flat wall of uniform thickness, which is made of material whose thermal conductivity, k , varies with temperature, T , in the following manner ) 1 ( 0 T k k where k 0 and are constants. A heat balance shows that at steady state, the heat flux through the wall q is constant. Show that this heat flux is given by   b b T T T T b k q 0 0 0 2 1 where b is the wall thickness, T 0 and T b are the temperatures of the outer faces of the wall. [13] Calculate the thickness of a firebrick furnace insulating wall so that the heat flux is a maximum of 150 W m -2 when the inside temperature of the wall is 950 ºC and the outside is 50 ºC. [7] Data : Firebrick k = 0.15 (1+0. 00035 T ) W m -1 K -1 where T is given in ºC. 2.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/14/2009 for the course CHEMICAL E che 2101 taught by Professor Mrdhoot during the Spring '09 term at UCL.

Page1 / 2

2009 cw q - CENG1001 Transport Processes I Deadlines Qu 1 2...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online