Vehicles > A/C Usage
In this form the user provides the number of vehicles equipped with air-conditioning system (Vehicles equipped with A/C(%)). Some 'default' values are proposed which are rough estimates only. More detailed data can be obtained from national statistics. In general, the number of passenger cars equipped with an A/C increases for late models. One also needs to estimate the A/C usage (Usage(%)), as a percentage fraction of the vehicle operation. For simplicity, one single usage factor is proposed regardless of urban, rural, or highway driving. This usage factor is uniformly applied to all driving conditions. This usage factor should be integrated over the year, i.e. there is no seasonal differentiation.
When one wishes to introduce own values and not use those proposed by the software, he/she can simply replace the proposed value by typing in the respective cell. The value will be displayed red indicating an updated value. If the user wishes to finalize the update he/she must click on the "Apply" button. The value will be displayed as black in an orange cell indicating a user value. In order to restore the default values, the user needs to right click on the value he wishes to restore and select "Set default values" from the proposed menu. Alternatively, he/she can select all values in the form by pressing "Ctrl + a" and then by right-clicking restoring all to the default values.