Temperature scales - thermodynamics, Mechanical Engineering

Temperature Scales:

The temperature of a system can be determined by bringing a 2nd body, a thermometer, into contact with the system and allowing thermal equilibrium to be reached. The value of temperature is found by measuring some temperature dependent property of thermometer. Any such property is called as thermometric property.

To allocate numerical values to the thermal state of the system, it is required to establish a temperature scale on which temperature of system can be read. This requires selection of basic unit and reference state. Thus, the temperature scale can be established by assigning numerical values to certain easily reproducible states. For this purpose it is probable to use the following 2 fixed points:

(1) Ice Point: It is equilibrium temperature of ice having air saturated water at standard Atmospheric pressure.

(2) Steam Point: The equilibrium temp. of pure water having its own vapour of standard atmospheric pressure.

 

SCALE

ICE POINT

STEAM POINT

TRIPLE POINT

KELVIN

273.15K

373.15K

273.15K

RANKINE

491.67R

671.67R

491.69R

FAHRENHEIT

320F

2120F

32.020F

CENTIGRADE

00C

1000C

0.010C

463_Temperature Scales.png

Compansion of references on different scales

 

Posted Date: 10/15/2012 2:05:12 AM | Location : United States







Related Discussions:- Temperature scales - thermodynamics, Assignment Help, Ask Question on Temperature scales - thermodynamics, Get Answer, Expert's Help, Temperature scales - thermodynamics Discussions

Write discussion on Temperature scales - thermodynamics
Your posts are moderated
Related Questions
Jib crane Mechanism: Sol.: Jib crane is taken in use to raise heavy loads. A load W is lifted up by pulling the chain through pulley D as shown in the adjacent figure.

Q. Explain about Horizontal Vessels? Horizontal vessels shall preferably be designed for two saddle supports attached by welding. Design of saddle supports and calculation of

Management of Financial Requirements:  To start an own workshop or any business you need monetary support. You need to ensure availability of the required money including working

Q. What is Tantalum? Tantalum is one of the most corrosion-resistant metals known. However, the high cost of tantalum has limited its commercial use as an all-purpose corrosio

Read two documents that will provide and answer the following questions: 1) You will note from reading the above referenced specifications that fewer valve types are recommended fo

cases of equilibrium with explaination

Q. Inspection and testing for coating application? The Applicator shall perform all inspection and testing necessary to assure that the surface preparation and coating applicat

Q. Process of Corrosion in BFW Tank? The feed to the BFW Tank is hot and will be flashing when it enters the tank. The vapours will be corrosive when the tank is open to atmosp

a masonry pier 3m*4m supports vertical load of 600kn at point (1.2,1),find stresses at corner of pier

Q. Show Hazards associated with plants? Hazards associated with plants will typically include the following: • Inherent fire hazards presented by the release of flammable g