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Engineering Thermodynamics

Engineering Thermodynamics
The same volume of all gases would represent their

Specific weights
Gas characteristic constants
Densities
Molecular weights

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Engineering Thermodynamics
The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)

mR (T2 - T1)
mcp (T2 + T1)
mcv (T2 - T1)
mcp (T2 - T1)

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Engineering Thermodynamics
The polytropic index (n) is given by

log [(p1v1)/(p2v2)]
log (p1p2)/log (v1v2)
log (v1/ v2)/ log (p1/p2)
log (p2/ p1)/log (v1/ v2)

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Engineering Thermodynamics
General gas equation is

PV=mRT
PV=nRT
PV = C
PV=KiRT

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Engineering Thermodynamics
A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as

Fractional distillation
Cracking
Carbonization
Full distillation

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Engineering Thermodynamics
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

pv = mRT
pv = RTm
pvm = C
pv = (RT)m

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