RUFAS.routines.manure.manure_treatments.open_lots module

class RUFAS.routines.manure.manure_treatments.open_lots.OpenLots(weather: Weather, time: RufasTime, manure_treatment_config: ManureTreatmentConfig)

Bases: BaseManureTreatment

Class for the open lots manure treatment system.

Attributes

All attributes inherited from BaseManureTreatment.

__init__(weather: Weather, time: RufasTime, manure_treatment_config: ManureTreatmentConfig) → None

Initialize the open lots manure treatment system.

Parameters

weatherWeather

The weather object used for getting the current day’s average temperature.

timeRufasTime

The RufasTime object used for checking the last simulation day.

manure_treatment_configManureTreatmentConfig

The configuration data object for the compost bedded pack barn.

_calc_dry_matter_changes(manure_total_solids: float, bedding_total_solids: float, manure_volatile_solids: float, moisture_effect: float = 0.65, days_since_last_tillage: int = 1, lag: int = 2, carbon_fraction_available_in_manure: float = 0.5, carbon_fraction_available_in_bedding: float = 0.35) → tuple[float, float, float]

Calculate the changes in dry-matter for the manure-bedding mixture.

Parameters

manure_total_solidsfloat

The total mass of the manure (kg).

bedding_total_solidsfloat

The mass of the bedding material (kg).

manure_volatile_solidsfloat

The mass of manure volatile solids (kg).

days_since_last_tillagefloat

The number of days since the manure-bedding mixture was last tilled. The default value can be found in ManureConstants.DEFAULT_DAYS_SINCE_LAST_TILLAGE.

lagint

The lag time used in the calculation of the carbon decomposition rate (days). The default value can be found in ManureConstants.DEFAULT_LAG_TIME.

moisture_effectfloat

The effect of moisture on microbial decomposition (unitless). The default value can be found in ManureConstants.DEFAULT_MOISTURE_EFFECT_MICROBIAL_DECOMP.

carbon_fraction_available_in_manurefloat

The proportion of carbon available in manure (unitless). The default value can be found in ManureConstants.DEFAULT_CARBON_FRACTION_AVAILABLE_IN_MANURE.

carbon_fraction_available_in_beddingfloat

The proportion of carbon available in the bedding material (unitless). The default value can be found in GasEmissionConstants.DEFAULT_CARBON_FRACTION_AVAILABLE_IN_BEDDING.

Returns

float

The total volatile solids in the manure-bedding mixture after emissions (kg).

float

The total solids in the manure-bedding mixture after emissions (kg).

float

The dry matter lost from carbon and methane emissions (kg).

_daily_update_helper() → ManureTreatmentDailyOutput

Calculate the daily output of the open lots manure treatment system.

Returns

ManureTreatmentDailyOutput

A ManureTreatmentDailyOutput object containing the daily output of the open lots manure treatment system.

_abc_impl = <_abc._abc_data object>