Details on Correction Factors
Information on the dialog General Correction Factors of the area Heat Load in the Configuration in LINEAR Building.
These ground- and weather-related correction factors are used when calculating the standard transmission heat loss of surfaces that border on the ground, outside air or unheated rooms. By selecting the calculation method, the values stored in the standard are set automatically. A manual adjustment of these values is possible and useful if concrete measured values are available. Adjusted values are displayed in bold.
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(Toolbar) ➤ Heat Load ➤ Correction Factors General
Variation T_a fg1: Defines the correction factor for the annual fluctuation in the outside temperature. This correction factor affects the heat losses to the ground for surfaces in contact with the ground.
adjoin. Ground Collector,> 25 % of ground-adjoining perimeter against unheated: This option for surfaces in contact with the ground is only relevant for the Austrian calculation methods and is disabled for other methods.
Enabled: In the case of adjacent heat pumps or floors in contact with the ground above the adjacent level, the correction factor Fluctuation T_a fg1 is increased by 0.35 to 1.8 due to the increased heat losses.
Groundwater Influence Gw: Defines the correction factor for the influence of the groundwater depth on the heat losses from surfaces in contact with the ground (foundation slabs) to the ground. The depth from which the factor is applied varies depending on the selected calculation method.
Weather Component ek: Defines the weather-related correction factor for surfaces that border on outside air or unheated adjoining rooms.
Weather Thermal Bridge el: Specifies the weather-related correction factor for thermal bridges that have heat losses to the outside air or into unheated adjoining rooms.
Thermal Conductivity of Ground: Specifies the thermal conductivity of the ground for calculating the transmission heat loss of building components in contact with the ground.
Standard: Resets adjusted values to the values stored as standard.
Change in Outside Temperature
This area is only relevant and visible in the SN SIA 384.201 (2003) calculation method.
Correction Factor (Decrease due to Height Difference): Defines the correction factor for altitude for the standard outdoor temperature.
: Resets adjusted values to the default value.