CHP GT (Combined Heat and Power Gas Turbine)

The combined heat-and-power gas turbine represents a gas turbine that is directly used to co-produce heat and power from gas. It is connected to the district heating network.

Attribute	Description	Standard value	Unit	Data type
deployment	If set to ‘true’, the technology will be considered in the energy system model (this does not necessarily mean it will be used). Only relevant for optimisation.	False	—	bool
deploy_existing	If set to ‘true’, existing gas turbine will be deployable.	False	—	bool
kW_el_max	Maximum capacity (electric power output) of newly built CHP gas turbines.	inf	kW	float
force_cap_max	Force implementation of maximum capacity specified in kW_el_max. Only relevant for optimisation.	False	kW	bool
hv_gas_MJpkg	Heating value (lower) of gas	46	MJ/kg	float
eta_el	Electrical conversion effiency.	0.35		float
htp_ratio	Heat-to-power (htp) ratio (kW_th/kW_el)	1.5	kW_th/kW_el	float
gas_price_CHFpkWh	Price of gas.	0.13	CHF/kWh	float
co2_intensity	Carbon-dioxide intensity of technology output (annual average value).	0.645	kg CO2/kWh	float
lifetime	Expected lifetime of technology before replacement is required.	25	years	int
capital_cost	CAPEX cost of technology per unit of capacity.	5000	CHF/kWp	float
maintenance_cost	OPEX cost of technology per unit of capacity.	10	CHF/kWp/year	float
interest_rate	Interest rate for computing levelised costs (if required).	0.025	—	float
allow_heat_export	Is it allowed to export heat?	True	—	bool
heat_export_subsidy	Export subsidy for heat. Can be needed when optimizing in the LP-mode.	1e-05	CHF/kWh	float

The relationship between the in- and outflows is given by

\[\mathtt{v\_e\_chpgt} = \mathtt{eta\_el} \cdot \mathtt{u\_gas\_chpgt}\]

\[\mathtt{v\_h\_chpgt} = \mathtt{htp\_ratio} \cdot \mathtt{eta\_el} \cdot \mathtt{u\_gas\_chpgt}\]

The symbols and names of the flows are

v_h_chpgt_waste	Waste Heat
u_gas_chpgt	Inflow Gas
v_e_chpgt	Outflow Electricity
v_h_chpgt	Outflow Heat