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Light
Published in David M. Scott, Industrial Process Sensors, 2018
Gas-discharge lamps, such as those found in neon signs, use a high voltage source to ionize gas within the lamp; the ions are accelerated by the electric field and cause collisional excitation and additional ionization of the atoms in the gas. As the atoms decay back to their ground state, they emit photons whose wavelength is determined by difference in energy level ΔE between the two electronic states of the atom according to equation 4.6. The emitted light is therefore composed of distinct wavelengths that are characteristic of the atoms in the gas; the spectral output of such a lamp is therefore very different from that produced by an incandescent source. Fluorescent lights are gas-discharge lamps with a coating on the inside surface of the glass tube; this coating absorbs ultraviolet light and fluoresces in the visible spectrum.
Lighting Systems
Published in Stephen W. Fardo, Dale R. Patrick, Electrical Power Systems Technology, 2020
Stephen W. Fardo, Dale R. Patrick
Electrical lighting systems are designed to create a comfortable and safe home or working environment. There are several types of lighting systems in use today. Among the most popular are incandescent, fluorescent, and vapor lights, as well as several special-purpose types of lighting. Lighting systems are one type of electrical load.
Lighting Systems
Published in Dale R. Patrick, Stephen W. Fardo, Brian W. Fardo, Electrical Power Systems Technology, 2021
Dale R. Patrick, Stephen W. Fardo, Brian W. Fardo
Electrical lighting systems are designed to create a comfortable and safe home or working environment. There are several types of lighting systems in use today. Among the most popular are incandescent, fluorescent, and vapor lights, as well as several special-purpose types of lighting. Lighting systems are one type of electrical load.
Quantitative analysis of sustainable housing energy systems based on Estidama pearl rating system
Published in International Journal of Green Energy, 2018
Abdalla Mahmoud Salim, Saleh Abu Dabous
This section provides detailed analysis of the three energy systems and analyzes their performance in terms of energy performance, environmental impact, and direct cost. The three energy systems are the cooling system, the lighting system, and the water heating system. The cooling system can be one of three types of air conditioning systems: wall split units, duct split units, and variable refrigerant flow (VRF) system. The lighting system includes three types of lights: fluorescent lamps (FL), compact fluorescent lamps (CFL), and light emitting diode (LED). The water heating system includes four types of water heaters: single electrical water heater, central electrical water heater, direct solar water heater, and indirect solar water heater as shown in Table 2.