carbonfly.pythermalcomfort.models.two_nodes_gagge_sleep module

carbonfly.pythermalcomfort.models.two_nodes_gagge_sleep.two_nodes_gagge_sleep(tdb: float, tr: float, v: float, rh: float, clo: float, thickness_quilt: float, wme: float = 0, p_atm: float = 101325, **kwargs) → dict

Adaption of the Gagge two-node model for sleep thermal environment, developed by Yan, S., Xiong, J., Kim, J. and de Dear, R. [Yan2022].

Parameters:

• tdb (float) – Dry bulb air temperature, [°C].

• tr (float) – Mean radiant temperature, [°C].

• v (float) – Air speed, [m/s].

• rh (float) – Relative humidity, [%].

• clo (float) – Clothing insulation, [clo].

• thickness_quilt (float) – Thickness of the quilt. [cm].

• wme (float, optional) – External work, [met]. Defaults to 0.

• p_atm (float, optional) – Atmospheric pressure, default value 101325 [Pa]. Defaults to 101325.

• **kwargs (dict) –

  Keyword arguments:

  • ltimeint, optional

    Number of time steps for each iteration. Defaults to 1.

  • heightfloat, optional

    Height of the person, [cm]. Defaults to 171.

  • weightfloat, optional

    Weight of the person, [kg]. Defaults to 70.

  • c_swfloat, optional

    Driving coefficient for regulatory sweating. Defaults to 170.

  • c_dilfloat, optional

    Driving coefficient for vasodilation. Defaults to 120.

  • c_strfloat, optional

    Driving coefficient for vasoconstriction. Defaults to 0.5.

  • temp_skin_neutralfloat, optional

    Skin temperature at neutral conditions, [°C]. Defaults to 33.7.

  • temp_core_neutralfloat, optional

    Core temperature at neutral conditions, [°C]. Defaults to 36.8.

  • e_skinfloat, optional

    Total evaporative heat loss, [W]. Defaults to 0.094.

  • alfafloat, optional

    Dynamic fraction of total body mass assigned to the skin node. Defaults to 0.1.

  • skin_blood_flowfloat, optional

    Skin-blood-flow rate per unit surface area, [kg/h/m2]. Defaults to 6.3.

  • met_shiveringfloat, optional

    Metabolic rate due to shivering, [met]. Defaults to 0.

Returns:

setfloat

Standard Effective Temperature (SET).

t_corefloat

Core temperature, [°C].

t_skinfloat

Skin temperature, [°C].

wetfloat

Skin wettedness, adimensional. Ranges from 0 to 1.

t_sensfloat

Predicted Thermal Sensation.

discfloat

Thermal discomfort.

e_skinfloat

Total rate of evaporative heat loss from skin, [W/m2]. Equal to e_rsw + e_diff.

met_shiveringfloat

Metabolic rate due to shivering, [W/m2].

alfafloat

Dynamic fraction of total body mass assigned to the skin node (dimensionless).

skin_blood_flow: float

Skin-blood-flow rate per unit surface area, [kg/h/m2].

Return type:

A dict contains