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Rankine Cycle

The Rankine cycle is a model that is used to predict the performance of steam turbine systems, though the theoretical principle also applies to reciprocating engines such as steam locomotives. The Rankine cycle is an idealized thermodynamic cycle of a heat engine that converts heat into mechanical work while undergoing phase change.

The thermal efficiency equals 1 minus the ratio of the low-to-high pressures to the power of 1 minus the reciprocal of the heat capacity ratio.

Formula

QuantityVariable[Subscript["η", "th"], "ThermalEfficiency"] == 1 - (QuantityVariable[Subscript["p", "l"], "Pressure"]/QuantityVariable[Subscript["p", "h"], "Pressure"])^(1 - QuantityVariable["γ", "HeatCapacityRatio"]^(-1))

symbol description physical quantity
ηth thermal efficiency "ThermalEfficiency"
ph high pressure "Pressure"
pl low pressure "Pressure"
γ heat capacity ratio "HeatCapacityRatio"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Rankine Cycle"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Rankine Cycle"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Rankine Cycle"], {QuantityVariable[ "\[Gamma]","HeatCapacityRatio"] -> 1.4`}]
Out[3]=

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