3. Heat losses and heat loss parameter

sap2012.SAP_worksheet.heat_losses_and_heat_loss_parameter.heat_losses_and_heat_loss_parameter(solid_door_net_area, solid_door_u_value, semi_glazed_door_net_area, semi_glazed_door_u_value, window_net_area, window_u_value, roof_window_net_area, roof_window_u_value, basement_floor_net_area, basement_floor_u_value, basement_floor_heat_capacity, ground_floor_net_area, ground_floor_u_value, ground_floor_heat_capacity, exposed_floor_net_area, exposed_floor_u_value, exposed_floor_heat_capacity, basement_wall_gross_area, basement_wall_opening, basement_wall_u_value, basement_wall_heat_capacity, external_wall_gross_area, external_wall_opening, external_wall_u_value, external_wall_heat_capacity, roof_gross_area, roof_opening, roof_u_value, roof_heat_capacity, party_wall_net_area, party_wall_u_value, party_wall_heat_capacity, party_floor_net_area, party_floor_heat_capacity, party_ceiling_net_area, party_ceiling_heat_capacity, internal_wall_net_area, internal_wall_heat_capacity, internal_floor_net_area, internal_floor_heat_capacity, internal_ceiling_net_area, internal_ceiling_heat_capacity, total_floor_area, thermal_bridges_appendix_k, effective_air_change_rate, dwelling_volume)[source]

Calculates the heat losses and the heat loss parameter, Section 3.

Parameters:

  • solid_door_net_area (float) – See (26), in m2.

  • solid_door_u_value (float or None) – See (26), in W/m2K.

  • semi_glazed_door_net_area (float) – See (26a), in m2.

  • semi_glazed_door_u_value (float or None) – See (26a), in W/m2K.

  • window_net_area (float) – See (27), in m2.

  • window_u_value (float or None) – See (27), in W/m2K. For windows and roof windows, use effective window U-value. Calculated using formula 1/[(1/U-value)+0.04] as given in paragraph 3.2.

  • roof_window_net_area (float) – See (27a), in m2. For windows and roof windows, use effective window U-value. Calculated using formula 1/[(1/U-value)+0.04] as given in paragraph 3.2.

  • roof_window_u_value (float or None) – See (27a), in W/m2K.

  • basement_floor_net_area (float) – See (28), in m2.

  • basement_floor_u_value (float or None) – See (28), in W/m2K.

  • basement_floor_heat_capacity (float or None) – See (28), in kJ/m2K.

  • ground_floor_net_area (float) – See (28a), in m2.

  • ground_floor_u_value (float or None) – See (28a), in W/m2K.

  • ground_floor_heat_capacity (float or None) – See (28a), in kJ/m2K.

  • exposed_floor_net_area (float) – See (28b), in m2.

  • exposed_floor_u_value (float or None) – See (28b), in W/m2K.

  • exposed_floor_heat_capacity (float or None) – See (28b), in kJ/m2K.

  • basement_wall_gross_area (float) – See (29), in m2.

  • basement_wall_opening (float) – See (29), in m2.

  • basement_wall_u_value (float or None) – See (29), in W/m2K.

  • basement_wall_heat_capacity (float or None) – See (29), in kJ/m2K.

  • external_wall_gross_area (float) – See (29a), in m2.

  • external_wall_opening (float) – See (29a), in m2.

  • external_wall_u_value (float or None) – See (29a), in W/m2K.

  • external_wall_heat_capacity (float or None) – See (29a), in kJ/m2K.

  • roof_gross_area (float) – See (30), in m2.

  • roof_opening (float) – See (30), in m2.

  • roof_u_value (float or None) – See (30), in W/m2K.

  • roof_heat_capacity (float or None) – See (30), in kJ/m2K.

  • party_wall_net_area (float) – See (32), in m2.

  • party_wall_u_value (float or None) – See (32), in W/m2K.

  • party_wall_heat_capacity (float or None) – See (32), in kJ/m2K.

  • party_floor_net_area (float) – See (32a), in m2.

  • party_floor_heat_capacity (float or None) – See (32a), in kJ/m2K.

  • party_ceiling_net_area (float) – See (32b), in m2.

  • party_ceiling_heat_capacity (float or None) – See (32b), in kJ/m2K.

  • internal_wall_net_area (float) – See (32c), in m2.

  • internal_wall_heat_capacity (float or None) – See (32c), in kJ/m2K.

  • internal_floor_net_area (float) – See (32d), in m2.

  • internal_floor_heat_capacity (float or None) – See (32d), in kJ/m2K.

  • internal_ceiling_net_area (float) – See (32e), in m2.

  • internal_ceiling_heat_capacity (float or None) – See (32e), in kJ/m2K.

  • total_floor_area (float) – See (4).

  • thermal_bridges_appendix_k (float or None) – in W/K. The transmission heat loss coefficient due to non-repeating thermal bridges as calculated using Appendix K. If None, then a simplified calculation is done in this module.

  • effective_air_change_rate (list (of floats)) – See (25).

  • dwelling_volume (float) – See (5), in m3.

Returns:

A dictionary with keys of ( solid_floor_UA, semi_glazed_door_UA, window_UA, roof_window_UA, basement_floor_UA, basement_floor_Ak, ground_floor_UA, ground_floor_Ak, exposed_floor_UA, exposed_floor_Ak, basement_wall_net_area, basement_wall_UA, basement_wall_Ak, external_wall_net_area, external_wall_UA, external_wall_Ak, roof_net_area, roof_UA, roof_Ak, total_area_of_external_elements, party_wall_UA, party_wall_Ak, party_floor_Ak, party_ceiling_Ak, internal_wall_Ak, internal_floor_Ak, internal_ceiling_Ak, fabric_heat_loss, heat_capacity, thermal_mass_parameter, thermal_bridges, total_fabric_heat_loss, ventilation_heat_loss_calculated_monthly, heat_transfer_coefficient, average_heat_transfer_coefficient, heat_loss_parameter, average_heat_loss_parameter )

  • solid_floor_UA (float): See (26), in W/K.

  • semi_glazed_door_UA (float): See (26a), in W/K.

  • window_UA (float): See (27), in W/K.

  • roof_window_UA (float): See (27a), in W/K.

  • basement_floor_UA (float): See (28), in W/K.

  • basement_floor_Ak (float): See (28), in kJ/K.

  • ground_floor_UA (float): See (28a), in W/K.

  • ground_floor_Ak (float): See (28a), in kJ/K.

  • exposed_floor_UA (float): See (28b), in W/K.

  • exposed_floor_Ak (float): See (28b), in kJ/K.

  • basement_wall_net_area (float): See (29), in m2.

  • basement_wall_UA (float): See (29), in W/K.

  • basement_wall_Ak (float): See (29), in kJ/K.

  • external_wall_net_area (float): See (29a), in m2.

  • external_wall_UA (float): See (29a), in W/K.

  • external_wall_Ak (float): See (29a), in kJ/K.

  • roof_net_area (float): See (30), in m2.

  • roof_UA (float): See (30), in W/K.

  • roof_Ak (float): See (30), in kJ/K.

  • total_area_of_external_elements (float): See (31), in m2.

  • party_wall_UA (float): See (32), in W/K.

  • party_wall_Ak (float): See (32), in kJ/K.

  • party_floor_Ak (float): See (32a), in kJ/K.

  • party_ceiling_Ak (float): See (32b), in kJ/K.

  • internal_wall_Ak (float): See (32c), in kJ/K.

  • internal_floor_Ak (float): See (32d), in kJ/K.

  • internal_ceiling_Ak (float): See (32e), in kJ/K.

  • fabric_heat_loss (float): See (33), in W/K.

  • heat_capacity (float): See (34), in kJ/K.

  • thermal_mass_parameter (float): See (35), in kJ/m2K.

  • thermal_bridges (float): See (36), in W/K.

  • total_fabric_heat_loss (float): See (37), in W/K.

  • ventilation_heat_loss_calculated_monthly (list (float): See (82), in W/K.

  • heat_transfer_coefficient (list (float): See (39), in W/K.

  • average_heat_transfer_coefficient (float): See (39), in W/K.

  • heat_loss_parameter (list (float): See (40), in W/m2K.

  • average_heat_loss_parameter (float): See (40), in W/m2K.

Return type:

dict