internal_gains_appendix_L function

sap2012.SAP_appendices.internal_gains_appendix_L.internal_gains_appendix_L(total_floor_area, assumed_occupancy, number_of_low_energy_light_bulbs, total_number_of_light_bulbs, frame_factor, window_area, light_access_factor_table_6d, light_transmittance_factor_table_6d, month_number, days_in_month, heat_gains_from_water_heating_monthly)[source]

Internal gain calculations as given in Appendix L.

Parameters:

  • total_floor_area (float) – See (4).

  • assumed_occupancy (float) – See (42). Calculated using equation from (42). If TFA > 13.9, N = 1 + 1.76 * [1 - exp(-0.000349 * (TFA -13.9)2)] + 0.0013 * (TFA -13.9). if TFA =< 13.9, N = 1. Where TFA is the Total Floor Area.

  • number_of_low_energy_light_bulbs (int) –

  • total_number_of_light_bulbs (int) –

  • frame_factor (float) –

  • window_area (float) –

  • light_access_factor_table_6d (float) –

  • light_transmittance_factor_table_6d (float) –

  • month_number (list(int)) –

  • days_in_month (float(int)) – List of the number of days in each month of the calendar year.

  • heat_gains_from_water_heating_monthly (list(float)) –

    1. in kWh/month.

Returns:

A dictionary with keys of ( G_L, C_1, C_2, E_B, initial_annual_lighting_demand, monthly_lighting_demand, annual_lighting_demand, lighting_gains, initial_annual_electrical_appliance_demand, monthly_electrical_appliance_demand, annual_electrical_appliance_demand, appliances_gains, cooking_gains, losses, water_heating_gains, metabolic_gains )

Return type:

dict