ERRORS IN DESIGN OF INDIRECT LIGHTING WITH EMITTING DIODES OCCURRED BY USING COMMERCIAL COMPUTER PROGRAMS
Journal Title: Proceedings of Electrotechnical Institute Prace Instytutu Elektrotechniki - Year 2015, Vol 62, Issue 268
Abstract
Indirect lighting installations, in which the observer cannot see direct light sources, seem to be the perfect place where LEDs can be used. Such solutions are already commonly used, but mostly because of the aesthetic aspects than their usability. Usage of of LEDs in these systems solves all the problems that exist in the case of fluorescent lamps. When performing computer simulations, using the most popular commercial lighting programs – Dialux and Relux, LED installation, in which the observer cannot see the light source, you have to remember that received visualizations do not touch the glare problem. Significant differences have been noted in the results of the lighting parameters that have been calculated by these programs. This article presents also several types of errors, which are often committed during designing of the indirect lighting using LED sources.
Authors and Affiliations
Andrzej Pawlak
KONSTRUKCJA AMORTYZATORA CIERNEGO O STEROWALNEJ SILE TŁUMIENIA
W artykule opisano pokrótce rolę amortyzatorów ciernych w konstrukcji bębnowej maszyny wirnikowej na przykładzie klasycznej pralki domowej oraz ich wpływ na przenoszenie wibracji między bębnem a podstawą urządzenia. W da...
PERFORMANCE CHARACTERISTICS OF HIGH-SPEED LOW-POWER INDUCTION MOTORS
The paper presents operational characteristics of a small induction motor with the stator core made of amorphous laminations, supplied from mains or frequency inverter at 100 and 200 Hz. Calculations were performed using...
TESTER FOR PHOTOVOLTAIC PANELS
Photovoltaic power plants consist of panels electrically connected in series-parallel arrangement. Natural scattering of technological production leading to differences in electrical parameters. Department of Measurement...
WYKORZYSTANIE FILTRU CZĄSTECZKOWEGO W PROBLEMIE IDENTYFIKACJI UKŁADÓW AUTOMATYKI
W artykule przedstawiono sposób identyfikacji parametrycznej obiektów nieliniowych zapisanych w przestrzeni stanu. Identyfikacja wykorzystuje metodę największej wiarygodności (ML), z zastosowaniem filtru cząsteczkowego i...
ORGANIC PHOTOVOLTAICS: FROM SYNTHESIS TO SOLAR CELL CONSTRUCTION
In this work based on the literature and own research different kinds of organic solar cells are presented. Research works concerning the development of organic photovoltaics are at present in three main directions: (i)...