BioCHP function

[gonzalodelalamo]

BioCHP model created as a .cpp function:

void bioCHP_plant(vector fuel_def, vector Yj, double W_el, double Qk, double Tk_in, double Tk_out){

// feed_def: name of each biomass feedstock
// Yj: mass fraction of each biomass feedstock
// W_el: electric power output (MW_el)
// Qk: heat demand (MW)
// Tk_in: Return temperature for each heat demand (district heating)
// Tk_in: Supply temperature for each heat demand (district heating)