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.
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
Arif alam said:
1 decade ago
At constant volume the heat is directly increase the temperature but at constant pressure heat is given to the system then temp is increased and also expand so some heat is extra needed.
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.
Yosef mulugeta said:
1 decade ago
cp/cv = 5/3 = 1.6 this for monoatomic particle.
cp/cv = 7/5 = 1.4 this for diatomic particle.
So, cp/cv = R where, R is molar mass.
R>1.
cp/cv = 7/5 = 1.4 this for diatomic particle.
So, cp/cv = R where, R is molar mass.
R>1.
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