| Environmental Results
|
Located in the left panel of the Environmental
tab, Environmental Results is selected by default, which displays the
environmental results on a table in the data display panel on the right side of
the Environmental
tab.
- Month —
Each table row displays the results for each simulation month for the duration
of the simulation.
-
Drybulb — Displays the average drybulb temperature for each month of the
simulation time period.
-
Wetbulb — Displays the average wetbulb temperature for each month of the
simulation time period.
-
Relative Humidity — Displays the average relative humidity for each month of
the simulation time period. Relative humidity is displayed as a percentage.
-
Barometric Pressure — Displays the average barometric pressure for each month
of the simulation time period.
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| Daylighting Results
|
Located in the left panel of the Environmental
tab, the Daylighting Results displays the daylighting results on a table in the
data display panel on the right side of the Environmental
tab.
Daylighting illuminance levels are calculated and
then used to determine how much the electric lighting can be reduced. Daylight
illuminance levels depend on many factors, including sky condition, sun
position, building location, its size, and the glass transmittance of its
windows, window shading, and reflectance of interior surfaces. The reductions
of electric lighting depend on daylight illuminance levels, lighting design,
the percentage of lights that controlled and the types of controls used for
them.
- Month —
Each table row displays the results (averages) for each simulation month for
the duration of the simulation.
-
Exterior Horizontal Illuminance From Sky — Displays the average monthly amount
of daylight striking an unobstructed horizontal plane of the Earth’s surface at
the building site. The total exterior horizontal illuminance is the sum of
Exterior Horizontal Beam Illuminance and Exterior Horizontal Illuminance From
Sky.
-
Exterior Horizontal Beam Illuminance — Displays the average monthly amount of
visible light content of beam solar radiation striking an unobstructed
horizontal plane of the Earth’s surface at the building site. Beam solar
radiation refers to the amount of solar radiation that reaches the Earth’s
surface that has not been scattered by the atmosphere’s air molecules,
suspended particles, clouds, pollutants, etc. The values listed here depend on
these atmospheric conditions; Moisture, turbidity, cloudiness, and solar
altitude. Typically, atmospheric conditions can reduce direct beam radiation by
10% on clear, dry days and by 100% during thick, cloudy days. The Exterior
Horizontal Beam Illuminance is equal to the product of the Exterior Beam Normal
Illuminance and the sine of solar altitude.
-
Exterior Beam Normal Illuminance — Displays the average monthly amount of
visible light content of beam solar radiation striking an unobstructed plane of
the Earth’s surface that is directly facing the sun (normal/perpendicular).
Beam solar radiation refers to the amount of solar radiation that reaches the
Earth’s surface that has not been scattered by the atmosphere’s air molecules,
suspended particles, clouds, pollutants, etc. The values listed here depend on
these atmospheric conditions; Moisture, turbidity, cloudiness, and solar
altitude. Typically, atmospheric conditions can reduce direct beam radiation by
10% on clear, dry days and by 100% during thick, cloudy days.
-
Luminous Efficacy of Sky Diffuse Solar Radiation — Displays the average monthly
amount of visible light content of sky diffuse solar radiation. Sky diffuse
refers to the amount of solar radiation that reaches the Earth’s surface after
it has been scattered by the atmosphere’s air molecules, suspended particles,
clouds, pollutants, etc. The values listed here depend on these atmospheric
conditions; Moisture, turbidity, cloudiness, and solar altitude.
-
Luminous Efficacy of Beam Solar Radiation — Displays the average monthly amount
of visible light content of beam solar radiation. Beam solar radiation refers
to the amount of solar radiation that reaches the Earth’s surface that has not
been scattered by the atmosphere’s air molecules, suspended particles, clouds,
pollutants, etc. The values listed here depend on these atmospheric conditions;
Moisture, turbidity, cloudiness, and solar altitude. Typically, atmospheric
conditions can reduce direct beam radiation by 10% on clear, dry days and by
100% during thick, cloudy days.
- Sky
Clearness for Daylighting Calculation — Displays a factor that describes the
average clearness of the sky at the building location. The sky clearness is one
of the factors used to determine sky type and the intended luminosity of solar
lighting in the building. A sky clearness factor which is close to 1.0
corresponds to an overcast sky. A sky clearness factor greater than 6.0 is a
clear sky.
- Sky
Brightness for Daylighting Calculation — Displays a factor that describes the
average brightness of the sky at the building location. The sky brightness is
one of the factors used to determine sky type and the intended luminosity of
solar lighting in the building.
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