Energy estimation and photometric measurements of LED lighting in laboratory
Electricity demand is prevailing all over the world now and energy management becomes very complex. This paper aims at providing solution for power demand and energy management by using HB white LED lights for domestic applications. LED lights consume very less power and gives out high energy in the form of brightness. A laboratory model is created in DIALUX 4.11 using CAD window and is illuminated with LED lights. Photometric measurements and energy evaluation are done for the laboratory model with room components of different construction materials in the presence of LED lighting. Reflectivity of different materials under illumination is determined. Simulation is done for varying brightness and calculated results are carried over to Pov-Ray 3.6 for determining the real lighting appearance of the laboratory model. Energy evaluation is done for a year and photometric values of lighting system are measured. The calculated results proves that LED lighting system can be used as an efficient lighting system for domestic purposes when compared to other lighting systems. Simulated results and photometric values of LED lighting are presented here.
Techno-Economic Analysis of Different Lighting Schemes: A Case Study
An optimum lighting design ensures sharp visibility and comfort by considering the light conditions. Further, for optimum utilization of electrical energy, proper care should be taken to avoid overestimation of required illuminance levels. In this paper techno-economic analysis of different lighting schemes viz incandescent lamp, CFL, LED lamp has been done. Further, an efficient arrangement of luminaries for a laboratory is designed in DIALux software.
Luminous flux and luminous efficacy of black-body radiation: An analytical approximation
Analytical expressions for calculation of luminous flux and luminous efficacy corresponding to a given radiant flux with black-body spectrum are presented. The results are directly applicable to extraterrestrial solar radiant flux and likewise to any other light source with a spectral distribution roughly equal to a black-body spectrum.