The engine is located in the environment temperature T0, in which the unused heat can be rejected.
Environment, in this case, is the atmosphere, but the environment is also the cooling water from the
sea or river. Environment can be considered as large enough when T0 does not change as a result of
heat transfer. For proper operation of the engine it is necessary to lubricate all the parts that rub each
against other, and this task is performed by lubricating oil. This oil takes part of the friction work and
heat; heat carrier from the cylinder liner, cylinder cover, lubricating oil and scavenged air is the
cooling water. In this paper is taken as the reference state of the environment the standard or ISO
environmental state, where the temperature of the intake air and cooling water is 25.0 ° C at 1.00 bar.
At steady state conditions the continuity equation is
in out
mm
.
The first law of thermodynamics can be expressed as conservation of energy in the control volume.
Disregarding changes in potential and kinetic energy of the all substances flow, conservation of energy
for steady state flow can be written as:
i i out i i in
The engine is located in the environment temperature T0, in which the unused heat can be rejected.Environment, in this case, is the atmosphere, but the environment is also the cooling water from the sea or river. Environment can be considered as large enough when T0 does not change as a result of heat transfer. For proper operation of the engine it is necessary to lubricate all the parts that rub each against other, and this task is performed by lubricating oil. This oil takes part of the friction work andheat; heat carrier from the cylinder liner, cylinder cover, lubricating oil and scavenged air is thecooling water. In this paper is taken as the reference state of the environment the standard or ISO environmental state, where the temperature of the intake air and cooling water is 25.0 ° C at 1.00 bar. At steady state conditions the continuity equation isin outmm .The first law of thermodynamics can be expressed as conservation of energy in the control volume.Disregarding changes in potential and kinetic energy of the all substances flow, conservation of energy for steady state flow can be written as:i i out i i in
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