Thermo Terms
In an ideal Carnot cycle, this thermodynamic quantity is the same in both the heat addition and heat rejection processes.
What is entropy change?
This law of thermodynamics states that energy cannot be created or destroyed.
What is the First Law of Thermodynamics?
This ideal cycle models spark ignition engines commonly used in automobiles.
What is the Otto cycle?
The Second Law can be used to define this efficiency limit for all heat engines.
What is Carnot efficiency?
Compared to Otto cycle, this parameter is higher in Diesel cycle for the same compression ratio.
What is the cut-off ratio?
This term describes the measure of disorder or randomness in a system.
What is entropy?
This law states that heat will not flow spontaneously from a colder body to a hotter body.
What is the Second Law of Thermodynamics?
This cycle is used to represent diesel engine operation.
What is the Diesel cycle?
The four processes in the Otto cycle are isentropic compression, constant volume heat addition, isentropic expansion, and this.
What is constant volume heat rejection?
This method involves using exhaust heat to drive an additional turbine or system.
What is waste heat recovery?
This device converts heat energy into mechanical work, operating between two temperature reservoirs.
What is a heat engine?
This cycle modification adds a heat exchanger between turbine exhaust and compressor exit.
What is regeneration?
The work output of a cycle can be found by calculating the area enclosed on this diagram.
What is the P-V diagram?
This thermal parameter directly affects the efficiency of the Otto and Diesel cycles.
What is the compression ratio?
This equation, Q=mcΔTQ = mc\Delta TQ=mcΔT, is used to calculate this kind of energy transfer.
What is sensible heat?
The ideal Brayton cycle is commonly used to model this type of engine.
What is a gas turbine engine?
In a Diesel cycle, this process differs from the Otto cycle during heat addition.
What is constant pressure heat addition?
This principle states that during any cyclic process, the net entropy change of the universe is always greater than or equal to zero.
What is the Clausius Inequality?
This advanced cycle combines Brayton and Rankine cycles for greater thermal efficiency.
What is a combined cycle?