Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 20)
20.
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
Discussion:
26 comments Page 2 of 3.
Ashish said:
1 decade ago
Cp/Cv = Gamma, which is the indices of the process and depends on the process. For isotropic process its 1.4, for polytropic process its n, for constant pressure process its zero, for constant volume process its infinite, for constant temperature process its equal to 1.
Arjun said:
1 decade ago
cp/cv or Y always greater than 1.
Monoatomic gases Y = 5/3 like cr, ne, he.
Diatomic Y = 7/5 or 1.4 like o2, n2, h2.
Triatomic or polyatomic Y = 4/3 or 1.33 like so2, co2.
Monoatomic gases Y = 5/3 like cr, ne, he.
Diatomic Y = 7/5 or 1.4 like o2, n2, h2.
Triatomic or polyatomic Y = 4/3 or 1.33 like so2, co2.
Jyoti prakash said:
1 decade ago
Cp is always greater than Cv, R = Cp>Cv
Satz said:
1 decade ago
W = Pdv in constant volume process work done is 0 and only increasing the internal energy but in constant pressure process internal energy increase and work also done on the system.
ROHIT KUMAR said:
1 decade ago
Since cp > cv & R = cp/cv.
So R(cp/cv) is always greater than 1.
So R(cp/cv) is always greater than 1.
Akshay said:
1 decade ago
@Prasanth.
Why so? Why Cp is always greater than Cv?
Why so? Why Cp is always greater than Cv?
Prasanth said:
1 decade ago
Because Cp is always greater than Cv.
Sanjay said:
1 decade ago
Cp/Cv = gama.
Which is greater than 1.
Which is greater than 1.
Riko said:
1 decade ago
Justify the equation :
y = cp/cv = 1.14.
y = cp/cv = 1.14.
Divya said:
1 decade ago
Cp-Cv = R where R is gas constant.
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