Sir plz tell diffrence between heat engine and reversible heat engine with actual example and reversible heat pump and heat pump i am confused i like your lecture
Thermodynamics gives bounds on real engines. Moreover, the explosion of the fuel mixture is not even approximately reversible. How can thermodynamics be of any use in designing real world internal combustion engines?
In real world design there is no reversible process and the best known reversible cycle is the carnot cycle which also can not be reached in real life design(due to irreversibilities) but it serves as a theoretical models that actual heat engines and refrigerators is to be designed. In other words the carnot cycle is is something that we take as a refrence to reach the best performance in real life.
@@thedarkknight4304 So TD provides us with an unattainable design goal. TD provides an upper bound on efficiency, through the Carnot cycle model. Is that its only applied use?
Ideal gas k cylinder ka base conducting h islea Jo bhi expansion m temperature change ho ra h vo conducting base ki vajah SE constant ho ja ra h ...it is the reason ki gas heat absorb krne PR bhi temp constant kaisw h😊
sir u should have a blanck board before u start the topic...and u have to start the topic with the diagram...coz sombody may ask u where this diagram came frm
@@duykhanh7746 because irreversible means we don't have the exact values that can be traced back. Means heat losses or other losses, that makes the engines less efficient. The reason why we have combustor efficiency as 85% for example. In this case 15% is lost to the surroundings.
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Thanks sir for this vedio ....... Sir your personality matches with your good subject ♥️♥️♥️♥️
W(2-3) & W(4-1) should have (1-√) as denominator
99⁹99999999⁹999999999999999999999999999999999999999⁹9⁹99999 to 999⁹9999⁹999⁹999999999⁹9999999
Thanks sir for this video ❤
sir in the denominator it is 1-jama not jama -1 and thanks
Thanks sir for this video
Sir, I think there will be -ve sign for heat in process 3-4
Nice video
Sir plz tell diffrence between heat engine and reversible heat engine with actual example and reversible heat pump and heat pump i am confused i like your lecture
Heat engine :- it is the system to convert thermal energy to mechanical energy to do some mechanical work. for ex:- engine
Is this the application of 2nd law of thermodynamics?
Thermodynamics gives bounds on real engines. Moreover, the explosion of the fuel mixture is not even approximately reversible. How can thermodynamics be of any use in designing real world internal combustion engines?
In real world design there is no reversible process and the best known reversible cycle is the carnot cycle which also can not be reached in real life design(due to irreversibilities) but it serves as a theoretical models that actual heat engines and refrigerators is to be designed. In other words the carnot cycle is is something that we take as a refrence to reach the best performance in real life.
@@thedarkknight4304 So TD provides us with an unattainable design goal. TD provides an upper bound on efficiency, through the Carnot cycle model. Is that its only applied use?
thanks sir
How would heat be absorbed in process 1-2 if the temperature remains constant?
I think it's because during the expansion the temperature tends to go down but the heat coming from the hot source keeps it constant
Heat and temperature, both are different. Heat is the total energy. While temp is proportional to ke of molecules
Heat absorb ho rhe h prr sath mye expansion bhi toh ho rha h......
Agr expension ni hota toh temperature constant nhi reheta
All though it is not possible but aap isko iss trha smjh skhte h
Ideal gas k cylinder ka base conducting h islea Jo bhi expansion m temperature change ho ra h vo conducting base ki vajah SE constant ho ja ra h ...it is the reason ki gas heat absorb krne PR bhi temp constant kaisw h😊
sir u should have a blanck board before u start the topic...and u have to start the topic with the diagram...coz sombody may ask u where this diagram came frm
There exists a term called 'TIME'... .
It is made in order to save students time !!
Bruh. He just drew it. If it's difficult to understand how a PV diagram works, you should watch his previous videos.
what is natural law here? sir said that term while writing the equatiion
Where is the nex class sir
Sir, why all process is reversible.?
because it occurs very slowly with an infinitesimal gradient and can be taken back to original state
Bcoz it's an ideal engine
@@harshvardhan6445 I can't understand that bro. plz explain.............
@@harshvardhan6445 but what if it's irreversible? Why does that make the engine less efficient?
@@duykhanh7746 because irreversible means we don't have the exact values that can be traced back. Means heat losses or other losses, that makes the engines less efficient. The reason why we have combustor efficiency as 85% for example. In this case 15% is lost to the surroundings.
Ravi Kumar
Sir these videos are sufficient for GATE preparation...
Nope
He has given all concepts.. once u gone through u need to practice question of previous papers..