Archive site for Autodesk Ecotect Analysis educational resources, notes and tutorials



WeatherTool: Optimum Orientation

This dialog box is displayed when you select the Best Orientation... button in the SOLAR POSITION panel or the display context menu.

Optimum orientation dialog box
Optimum orientation dialog box

Select Under and Overheated Periods

Use these buttons to specify the hottest and coldest months of the year. The top row with the red dots represent the hottest months whilst the bottom row with the blue dots represents the coldest. These are the periods over which incident solar radiation values are compared to determine the optimum orientation.

When you initially load in weather data, WeaTool automatically determines the hottest and coldest 3 months. You can set this period to be as long or short as you want, although the summer and winter seasons are recommended. No month can belong to both groups and each period must be contiguous. This is why you may sometimes notice that multiple buttons depress to prevent you creating a gap.

You can also enter these values as julian date ranges in the edit boxes below.

Overheated Period (Hottest time):

Set these values to define the overheated period, usually the hottest 3 months of the year. These values are julian dates, or the consecutive number of each day in the year (1 to 365 inclusive). A from value greater than the to value is allowed, in which case the period will wrap around at midnight.

Underheated Period (Coldest time):

Set these values to define the underheated period, usually the coldest 3 months of the year. These values are julian dates, or the consecutive number of each day in the year (1 to 365 inclusive). A from value greater than the to value is allowed, in which case the period will wrap around at midnight.

WeatherTool: Importing Fixed Format Data
WeatherTool: Passive Design

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