[Radiance-general] Daysim Electirc Lighting energy calculation

[Victor Li]

Dear:

I am using Daysim to calculate who much energy consumption for lighting to
compensate the daylight.

1, I found The total annual hours of occupancy at the work place and the
total annual hours of electric lighting are wrong. I calculated it by hands
according to the rules and methods from Tutorial. I found it is different
from the result of Daysim.

2, User Behaviour,   "Active" means "A user who operates the electric
lighting in relation to ambient daylight conditions"  I donot understand
what does "the ambient daylight conditions" mean here?  For blinds, If there
is no blinds or other shading devices in my building, how can i set this for
blinds?

3, Lighting and Shading control system.  For blinds control, I really donot
know what is the difference between set in "User Behaviour - blinds use" and
"Lighting and Shading control system - blinds control" ?  Likewise, if there
is no blinds how can i set it?  For lighting control, i tried the frist
three types, which are "Manual on/off switch near the door",  " Switch off
occupancy sensor", and "switch on/off occupancy sensor"  i didnot find any
difference of the results between the three.

4 in my building the electric lighting is only used when the daylight does
not meet the 300 lux requirement. so who can i select the lighting control
type?  is the " Photosensor controlled dimming system? apropriate for my
situation?

5 what is the function of "work plan sensor"

i am new to Daysim so i have many questions  Hope you can help!  Thank you
very much!

Best Regards!

victor
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