Settings

To set Design Day Settings, navigate to 'Settings and left-click. Next, either accept the default settings or enter specific settings for Summer Design Days and Winter Design Days. Where multiple Design Days are required, locate the '+' icon and add as many Design Days as are required. Once complete, hit 'Update' and then Run 1 Simulation.

Summer and Winter Design Days

Month

Specify the Month used in the simulation.

Day of Month

Specify the Day of the Month used in the simulation.

Max. Drybulb Temperature

Specify the Max. Drybulb Temperature, the highest air temperature used in the simulation.

Daily Drybulb Temperature

Specify the Daily Drybulb Temperature, the average air temperature over a day used in the simulation.

Humidity Condition

Specify the Humidity Condition, the state of air moisture content used in the simulation.

Dew Point

Specify the Dew Point temperature at which air becomes saturated, forming dew, used in the simulation.

Enthalpy

Specify Enthalpy, the total energy content of the air used in the simulation.

Humidity Ratio

Specify the Humidity Ratio, the water vapour mass per unit of dry air used in the simulation.

Wetbulb

Specify the Wetbulb temperature at which air is saturated with moisture used in the simulation.

Wetbulb/Dewpoint at Max. Drybulb

Specify the Wetbulb/Dewpoint at Max. Drybulb: Moisture conditions at peak temperature used in the simulation.

Solar Model Indicator

Specify the Solar Model Indicator, the method for simulating solar radiation used in the simulation.

ASHRAE Clear Sky: Clear sky solar radiation model by ASHRAE.

ASHRAE Tau: Specify ASHRAE Clear Sky: Clear sky solar radiation model by ASHRAE.

ASHRAE Tau 2017: Updated time constant as per 2017 guidelines.

Zhang Huang: Model for solar and daylighting analysis.

Optical Depth of Beam Irradiance

Specify the Optical Depth of Beam Irradiance, the measure of beam radiation attenuation used in the simulation.

Optical Depth of Diffuse Irradiance

Specify the Optical Depth of Diffuse Irradiance, the measure of diffuse radiation attenuation used in the simulation.

Daylight Savings

Specify Daylight Savings, to include longer daylight in summer.

Barometric Temerature

Specify the Barometric Temperature affecting barometric pressure used in the simulation.

Wind Direction

Specify the Wind Direction from which the wind is blowing used in the simulation.

Rain Indicator

Specify the Rain Indicator, the presence or absence of rain used in the simulation.

Snow Indicator

Specify the Snow Indicator, the presence or absence of snow used in the simulation.