Microsoft PowerPoint - INTRODUCTION TO Types Of Heat Transfer

Microsoft PowerPoint - INTRODUCTION TO Types Of Heat Transfer

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: INTRODUCTION TO Types of Heat Transfer Course By : Prof. Mohajer prepared by: S.M. rafigh 2011 How ‘Heat’ Moves Review of past terms: • Define “ Energy ”: The ability to do work or cause change. • What is the basic unit of measure for energy? . Joules 2 How ‘Heat’ Moves • Define “ Heat ”: Heat is the movement of thermal energy from a substance at a higher temperature to another substance at a lower temperature. 3 The Nature of Heat Heat moves in only one direction : • Under normal conditions and in nature, heat energy will ALWAYS flow the warmer object to the cooler object. • Heat energy will flow from one substance to • Heat energy will flow from one substance to another until the two substances have the same temperature. 4 How ‘Heat’ Moves Thermal energy in the form of heat can move in three ways. Conduction Convection Radiation 5 Conduction CONDUCTION : • The transfer of heat from one particle of matter to another by direct particle to particle contact. onduction occurs primarily in solids because the – Conduction occurs primarily in solids because the particles are tightly packed together. – The particles themselves DO NOT change positions. 6 Conduction Example: A metal spoon in a pot of water being heated on an electric stove. .a First, the electrical energy is converted to thermal energy by the stove. .b The rapidly vibrating particles of the hot with the particles of the collide electric coil cool pot. .c Heat energy is transferred, causing the particles in the pot to vibrate faster. 7 Conduction .d collide The rapidly vibrating particles of the pot now with the particles of the water at the bottom of the pot....
View Full Document

This note was uploaded on 06/21/2011 for the course CHE 21345 taught by Professor Prof.mohajer during the Fall '10 term at Sharif University of Technology.

Page1 / 27

Microsoft PowerPoint - INTRODUCTION TO Types Of Heat Transfer

This preview shows document pages 1 - 9. Sign up to view the full document.

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