adm1_performance ¶

ADM1Performance ¶

ADM1Performance(adm1_obj)

Class for ADM1 reactor performance variables.

Parameters:

Name	Type	Description	Default
`adm1_obj`	`ADM1Reactor`	ADM1Reactor instance.	required

Attributes:

Name	Type	Description
`dim`	`ndarray(2)`	Reactor dimensions of the anaerobic digestor [m³]. [V_LIQ, V_GAS]
`hydrogen_concentration`	`float`	Concentration of hydrogen in the biogas [mol ⋅ m⁻³].
`methane_concentration`	`float`	Concentration of methane in the biogas [mol ⋅ m⁻³].
`carbon_dioxide_concentration`	`float`	Concentration of carbon dioxide in the biogas [mol ⋅ m⁻³].

Source code in src/bsm2_python/bsm2/adm1_performance.py

def __init__(self, adm1_obj: ADM1Reactor):
    self.dim = adm1_obj.dim
    self.hydrogen_concentration = 0
    self.methane_concentration = 0
    self.carbon_dioxide_concentration = 0

energy_consumption ¶

energy_consumption(t_new, t_old, rho_h2o=997, cp_h2o=4182)

Returns the energy required to heat up the reactor from t_old to t_new.

Parameters:

Name	Type	Description	Default
`t_new`	`float`	The new temperature of the reactor [K].	required
`t_old`	`float`	The old temperature of the reactor [K].	required
`rho_h2o`	`float`	The density of water [kg ⋅ m⁻³].	`997`
`cp_h2o`	`float`	The specific heat capacity of water [J ⋅ (kg ⋅ K)⁻¹].	`4182`

Returns:

Name	Type	Description
`heat_in_kwh`	`float`	Energy required to heat up the reactor [kWh].

Source code in src/bsm2_python/bsm2/adm1_performance.py

def energy_consumption(self, t_new, t_old, rho_h2o=997, cp_h2o=4182):
    """Returns the energy required to heat up the reactor from t_old to t_new.

    Parameters
    ----------
    t_new : float
        The new temperature of the reactor [K].
    t_old : float
        The old temperature of the reactor [K].
    rho_h2o : float
        The density of water [kg ⋅ m⁻³].
    cp_h2o : float
        The specific heat capacity of water [J ⋅ (kg ⋅ K)⁻¹].

    Returns
    -------
    heat_in_kwh : float
        Energy required to heat up the reactor [kWh].
    """

    vol_reactor = self.dim[0]
    # Q = mcΔT
    heat_in_joules = rho_h2o * vol_reactor * cp_h2o * (t_new - t_old)
    heat_in_kwh = heat_in_joules / (3600 * 1000)  # Convert from joules to kilowatts

    return heat_in_kwh

reactor_temperature ¶

reactor_temperature(heat_in_kwh, t_old, rho_h2o=997, cp_h2o=4182)

Returns the new temperature of the reactor after energy has been supplied to the reactor.

Parameters:

Name	Type	Description	Default
`heat_in_kwh`	`float`	Energy supplied to heat up the reactor [kWh].	required
`t_old`	`float`	The old temperature of the reactor [K].	required
`rho_h2o`	`float`	The density of water [kg ⋅ m⁻³].	`997`
`cp_h2o`	`float`	The specific heat capacity of water [J ⋅ (kg ⋅ K)⁻¹].	`4182`

Returns:

Name	Type	Description
`t_new`	`float`	The new temperature of the reactor [K].

Source code in src/bsm2_python/bsm2/adm1_performance.py

def reactor_temperature(self, heat_in_kwh, t_old, rho_h2o=997, cp_h2o=4182):
    """Returns the new temperature of the reactor after energy has been supplied to the reactor.

    Parameters
    ----------
    heat_in_kwh : float
        Energy supplied to heat up the reactor [kWh].
    t_old : float
        The old temperature of the reactor [K].
    rho_h2o : float
        The density of water [kg ⋅ m⁻³].
    cp_h2o : float
        The specific heat capacity of water [J ⋅ (kg ⋅ K)⁻¹].

    Returns
    -------
    t_new : float
        The new temperature of the reactor [K].
    """

    vol_reactor = self.dim[0]
    t_new = t_old + (heat_in_kwh * 3600 * 1000) / (rho_h2o * vol_reactor * cp_h2o)
    return t_new

biogas_productions ¶

biogas_productions(hydrogen_concentration, methane_concentration, carbon_dioxide_concentration)

Returns the total biogas production [kWh] from the ADM1 reactor based on the last output.

Parameters:

Name	Type	Description	Default
`hydrogen_concentration`	`float`	Hydrogen concentration in the biogas [mol ⋅ m⁻³].	required
`methane_concentration`	`float`	Methane concentration in the biogas [mol ⋅ m⁻³].	required
`carbon_dioxide_concentration`	`float`	Carbon dioxide concentration in the biogas [mol ⋅ m⁻³].	required

Returns:

Name	Type	Description
`total_energy_kwh`	`float`	Total biogas production [kWh].

Source code in src/bsm2_python/bsm2/adm1_performance.py

def biogas_productions(self, hydrogen_concentration, methane_concentration, carbon_dioxide_concentration):
    """Returns the total biogas production [kWh] from the ADM1 reactor based on the last output.

    Parameters
    ----------
    hydrogen_concentration : float
        Hydrogen concentration in the biogas [mol ⋅ m⁻³].
    methane_concentration : float
        Methane concentration in the biogas [mol ⋅ m⁻³].
    carbon_dioxide_concentration : float
        Carbon dioxide concentration in the biogas [mol ⋅ m⁻³].

    Returns
    -------
    total_energy_kwh : float
        Total biogas production [kWh].
    """

    # convert the concentration to kg/m3
    hydrogen_concentration = hydrogen_concentration * 2.016 / 1000
    methane_concentration = methane_concentration * 16.04 / 1000
    carbon_dioxide_concentration = carbon_dioxide_concentration * 44.01 / 1000
    # calculate the total energy in the biogas
    self.hydrogen_concentration = hydrogen_concentration
    self.methane_concentration = methane_concentration
    self.carbon_dioxide_concentration = carbon_dioxide_concentration
    methane_lhv = 890  # [kWh/kg]
    hydrogen_lhv = 33  # [kWh/kg]
    total_energy_kwh = (
        self.hydrogen_concentration * hydrogen_lhv + self.methane_concentration * methane_lhv
    ) * self.dim[1]
    return total_energy_kwh