nd
Thermodynamics
,1st Law of Thermodynamics
The heat and Mechanical work are mutually convertible:
, The Law of Conservation of Energy
The energy cannot be created nor destroyed and it
can be transformed from one form into another, but the total
amount of energy never changes.
, 1st Law of Thermodynamics Limitations
When a closed system undergoes a thermodynamic cycle, the net heat tran
equal to net work transfer.
Does not specify Direction of flow & not mentioned any conditions
The heat energy and mechanical work are mutually convertible.
Work fully converted into heat but heat not fully converted into work.
Perpetual Motion Machine of First Kind
It is impossible to construct a machine that can continuously supply mechanical
work without consuming any energy simultaneously. Such a hypothetical machine
is known as the perpetual motion machine of the first kind. These types of
machines violate the 1st law of thermodynamics and do not exist in reality.