THERMODYNAMICS ACE ACADEMY GATE STUDY MATERIAL PART-2 FREE DOWNLOAD PDF www.MechanicaLibrary.com

THERMODYNAMICS PART-2

ACE ACADEMY GATE STUDY MATERIAL

FREE DOWNLOAD PDF

MECHANICAL ENGINEERING

Thermodynamics Ace Academy GATE Study Material Part-2 Free Download PDF

ABOUT THE BOOK

SUBJECT : THERMODYNAMICS - THEORY WITH WORKED OUT EXAMPLES SELF AND CLASSROOM PRACTICE QUESTIONS
AUTHOR : SUBJECT EXPERTS OF ACE ENGINEERING ACADEMY - HYDERABAD
PUBLISHERS : ACE ENGINEERING PUBLISHERS
IDEAL FOR : GATE AND PSU's - MECHANICAL ENGINEERING STREAM

CONTENTS :

PROPERTIES OF PURE SUBSTANCES
AIR CYCLES
PSYCHROMETRY
RANKINE CYCLE
GAS TURBINES
REFRIGERATION
STEAM TABLES
KEY SHEETS

Thermodynamics Ace Academy GATE Study Material Part-2 Free Download PDF

Zeroth Law of Thermodynamics : The property which distinguishes thermodynamics from other sciences is temperature. One might say that temperature bears as important a relation to thermodynamics as force does to statics or velocity does to dynamics. Temperature is associated with the ability to distinguish hot from cold. When two bodies at different temperatures are brought into contact, after some time they attain a common temperature and are then said to exist in thermal equilibrium.

When a body A is in thermal equilibrium with a body B, and also separately with a body C then B and C will be in thermal equilibrium with each other. This is known as the zeroth law of thermodynamics. It is the basis of temperature measurement. In order to obtain a quantitative measure of temperature, a reference body is used, and a certain physical characteristic of this body which changes with temperature is selected.

The changes in the selected characteristic may be taken as an indication of change in temperature. The selected characteristic is called the thermometric property and the reference body which is used in the determination of temperature is called the thermometer. A very common thermometer consists of a small amount of mercury in an evacuated capillary tube. In this case the extension of the mercury in the tube is used as the thermometric property

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