In thermodynamics, the Joule-Thomson effect describes a process in which a fluid is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the environment. This procedure is called a throttling process or Joule-Thomson process. The rate of change of temperature T with respect to pressure P in a Joule-Thomson process (that is, at constant enthalpy H) is the Joule-Thomson coefficient µJT.

(a) Find a relationship between  µJT , Cp and β (volumetric coefficient of thermal expansion)

Hint : The final relationship will also include T and V)

(b) What is the value of µJT for an ideal gas?

(c) Air flows at a steady rate through a horizontal insulated pipe which contains a partially closed valve. The conditions of the air upstream from the value of 50 ºC and 5.5 bar, and the downstream pressure is 2.5 bar.  If the air is regarded as an ideal gas, what is the temperature of the air some distance downstream from the valve? Assume the change of kinetic energy of the air is negligible.  Recall that for throttling process H is constant.

Posted Date: 3/11/2013 1:22:45 AM | Location : United States

Ask an Expert

Related Discussions:- Throttling process, Assignment Help, Ask Question on Throttling process, Get Answer, Expert's Help, Throttling process Discussions

Write discussion on Throttling process
Your posts are moderated

Write your message here..

Related Questions

Superposition principle, Superposition principle The general idea is t... Superposition principle The general idea is that, while a number of influences are working on a system, the total influence on that system is just the sum of the individual in

Find kinetic energy, A particle with mass m = 2:5 is moving along a straigh... A particle with mass m = 2:5 is moving along a straight trajectory. The distance covered by a particle is described by the function S(t) = t 3 + 2t 2 , where t > 0 is the time

Explain eye chamber and its working, Eye Chamber: The ball is separated... Eye Chamber: The ball is separated into two chamber, the aqueous chamber and the vitreous chamber. Working: Parallel rays from an object converged by the eye lens and b

Determine nucleus of element having atomic no.& weight, The nucleus of the ... The nucleus of the element having atomic number 25 and atomic weight 55 will contain : (1 )25 protons and 30 neutrons (2) 25 neutrons and 30 protons (3) 55 protons (4)

Low resistivity materials, Low resistivity materials: The conducting mater... Low resistivity materials: The conducting materials having resistivity between 10 -8 to 10 -6 ohm-m come under this category and are used in house wiring, as conductors for powe

Isolated magnetic poles, Isolated magnetic poles do not exist'. explain? ... Isolated magnetic poles do not exist'. explain? A. 1. If a bar magnet is cut into smaller and smaller pieces eventually ending with the smallest possible piece, this smallest

How far will it skid, How Far Will It Skid? Most drivers' education cla... How Far Will It Skid? Most drivers' education classes teach future drivers in which the stopping distance of a skidding car is in a straight line proportional to the square of

hypothesize the basic short-run and long-run, Choose and research an indus... Choose and research an industry where there has been a pattern of change in a particular market model (monopoly, oligopoly, etc.). Write a four to five (4-5) page paper in which

Derive the wave equation, Starting from Maxwell's e-m equation, get the wav... Starting from Maxwell's e-m equation, get the wave equation for E in an ionized medium. Identify the dissipative terms in the equation.

What is energy bands, Normal 0 false false false EN-IN ... Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4