Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 9)
9.
When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
Discussion:
27 comments Page 2 of 3.
Hare ram said:
1 decade ago
In constant volume processes the volume remains const. The internal energy=m*cv* (change in temp) , the final temp is raising automatically internal energy increases.
Amar Dev said:
1 decade ago
Heat supplied = Work done + Change in internal energy.
dQ = W + dU.
dQ = PdV + dU [dV(change in volume) = 0 in case of constant volume].
So dQ = dU.
dQ = W + dU.
dQ = PdV + dU [dV(change in volume) = 0 in case of constant volume].
So dQ = dU.
Vaibhav said:
1 decade ago
Constant volume process work done is zero.
i.e. A/C first law of Thermodynamics total heat supplied used for increasing internal energy of system.
i.e. A/C first law of Thermodynamics total heat supplied used for increasing internal energy of system.
Rakesh Kumar Maurya said:
1 decade ago
Constant volume means, no work obtained by object because of volume change is not possible by internal energy change.
(1)
Uttam kumar said:
1 decade ago
Collision between the atoms also be responsible for increase in internal energy. If external energy are supplied.
Manpreet said:
1 decade ago
We know work done in constant volume process is zero. So dw - 0
According to first law dw=dq+du.
So that dq=du.
According to first law dw=dq+du.
So that dq=du.
Uttam kumar said:
1 decade ago
I can't understand que. In case of inter energy, they get increase but how the supplied energy get increase?
Saurabh said:
10 years ago
If we burn anything in specific volume the temperature will be increased and heat supplied will also be.
Sumit ghosh said:
1 decade ago
From first law of thermodynamics,
dq= du + dw and dw = pdv.
At constant volume dw = 0.
So, dq = dw.
dq= du + dw and dw = pdv.
At constant volume dw = 0.
So, dq = dw.
Aamir Akhtar said:
1 decade ago
As vol is const. W.d = 0.
Therefore net heat supplied is utilised in increasing the internal energy.
Therefore net heat supplied is utilised in increasing the internal energy.
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