[EnergyPlus_Support] Daylight

[Fábyo Luiz Pereira <fluizp@xxxxxxxxx>]

   I´m trying to simulate a daylight example and have some doubts:
- "Minimum input power fraction for continuous dimming control"
(Daylighting:Detailed): This fraction is relative to the "Design Level"
(Lights)?
- "Total daylighting reference points" (Daylighting:Detailed): I´m afraid that
can't use 2 reference points, cause the "Daylight Illum at Ref Point" Report is
giving, for some hours, nonsense values like 29000 lux. When I simulate the
same building with only 1 reference point the results for this report seems to
be acceptable (maximum value about 2500 lux).
- In my case, I´m using 3025 W of light design level per zone (each one have
about 150 m2 of floor area), with visible fraction equal to 0.35. This way, can
I estimate a value for my "Illuminance setpoint at first reference point"
(Daylighting:Detailed)? I´m using the default value for this variable (500
lux), and I know that usually we choose that based on a table, but I´m not sure
that my power design level can be able to give this illuminance. For my
viewpoint, knowing the light's visible fraction and the floor area I can find a
illuminance level. Is that right?

=====
________________________________________________________
 Engº Fábyo Luiz Pereira
 UFRGS - Laboratório de Vapor e Refrigeração
 Rua Sarmento Leite, 425 - Sala 203 - Centro - 90050-170
 Fone / Fax: +55 51 3316-3167 / 3316-3355
 www.mecanica.ufrgs.br/lafrig
 Porto Alegre - RS - BRASIL


	
	
		
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