deflex.efficiency_method¶

deflex.efficiency_method(eta_e, eta_th)[source]¶

Efficiency Method - a method to allocate the fuel input of chp plants to the two output flows: heat and electricity

The allocation factor $\alpha_{el}$ of the electricity output is calculated as follows:

$\alpha_{el}=\frac{\eta_{th}}{\eta_{el}+\eta_{th}}$

$\alpha_{el}$ : Allocation factor of the electricity flow

$\eta_{el}$ : Efficiency of the electricity output in the chp plant

$\eta_{th}$ : Efficiency of the thermal output in the chp plant

Parameters:	eta_e (numeric) – The efficiency of the electricity production in the chp plant. Mandatory in the following functions: alternative_generation, exergy, iea, efficiency eta_th (numeric) – The efficiency of the heat output in the chp plant. Mandatory in the following functions: alternative_generation, exergy, iea, efficiency
Returns:	Allocation factor for the electricity flow
Return type:	numeric

Examples

>>> round(efficiency_method(0.3, 0.5), 3)
0.625