Finding the most energy-efficient bulb is a continued search and developing dilemma for both producer and consumer. Since 1802, the electric bulb is a breakthrough and a refined way of improvising lifestyle. Energy efficiency is not a major concern for the light at the invention, but it becomes a part and parcel for modern lights.
Lighting is one of the major sources of energy consumptions. Nowadays, more than 50 percent of the electricity consumptions are based on lighting. Due to the construction and working principle, energy-efficient lighting is moving towards a more balanced ecosystem.
One of the most efficient lighting technology is LED technology. Because of higher light intensity and semiconductor structure they require less energy than incandescent lights and CFL lights. The term of energy efficacy is the most critical parameter for measuring efficiency for a light bulb.
The efficacy is measured by light output and the input power. LED lights are used in different settings such as flashlight, track lights, headlights and so on. LED lights are white lights. For centuries the engineers and scientists work in a tremendous harmony to produce the most energy-efficient lighting solution through LED lighting.
This light is also a remarkable solution for environmental sustainability and health and safety issues. The efficiency of energy-efficient lighting depends on some important parameters. There are several interesting solutions available in the market.
Low-pressure sodium lights are often regarded as one of the most efficient lights. The main attribute for sodium light is the use of lights in a noisy environment and it is not susceptible to vibration. The luminance flux is 7800 which is great.
Figure-1: The development of luminous flux for Low-pressure sodium lights
High-Pressure Sodium Lights
High-pressure sodium lights are quite important in the manufacturing process. This excellent high-pressure light will produce excellent lights in different conditions such as parking lot, street lights and other circumstances.
Figure 2: The luminous flux of high-pressure sodium at different times
LEDs from the phosphor is improving towards a great degree after 1980 and rapidly improving day by day to become the best efficient light in the lighting industry. At this moment it is lower than low-pressure sodium but the researchers suggest it will surpass shortly. LED lights have a major advantage over other lights.
Figure 3: Continuous development of Luminous flux in different years
Before purchase or compare various lighting solutions, one needs to consider some of the key parameters.
Luminous efficacy is one of the key components for utilizing energy efficiency. Luminous efficacy is related to human vision. The sensitivity of the vision has a major outcome in determining the best possible lighting solutions. If human vision does not agree with the luminous flux, then these lighting solutions are obsolete.
That is why human vision is quite an important aspect of determining the required light solutions. The color of light also has a very important aspect in determining luminous efficacy. Whiter lights have better output than any other lighting solutions.
Color temperature is also a very important parameter. The color tone determines the amount of light required as well as the energy required. This parameter is also detrimental to high-quality vision and environmental sustainability.
Color Rendering Index
This parameter is measured with the basis of sunlight. Sun is the most prominent provider of white lights. The other sources of light are compared with solar lights. In this high-quality lighting, you will have a more proficient lighting structure. The quality of the lights has improved greatly by introducing the parameter.
The lighting efficiency is also dependent on different important electrical circuits and sensors. Some of the important sensor and circuits are focused with necessary diagrams.
Dawn to Dusk Sensor
This is one of the quality sensors used in modern lighting. This excellent lighting solution will provide the necessary outcome by using photodiode. When the sunlight is bright, then the light falls into the photodiode, it absorbs the energy and provides isolation. Whereas in the night condition, the light energy is very low to sensitize the photodiode and provide a short circuit to ignite the lights.
The motion sensor is also a very compelling solution to reduce energy consumption. This excellent technology will provide superior control of the flow of light in some moving conditions.
Dimmer circuits are also very important to provide energy regulations. The output of the Dimmer circuits will control the light in different power conditions. This excellent light will follow professional output to provide different aspects to provide greater outputs.
This circuit is quite extraordinary consisted of the potentiometer to adjust the tone of the light. Different timing circuits are attached in the circuit to provide time-based sequencing.
Future of Energy efficient lighting is very bright. Recent development and quality lights will increase the performance of the lights to a great degree. In this quality age, the semiconductor industry is maintaining the pace of innovations.
This excellent lighting will address different shortcoming to a certain degree to provide excellent quality lighting arrangements. Cost-effectiveness of different lights is quite considerable. LED lights are costly compared to halogen and incandescent lights but if you consider the light with fewer electricity consumptions will have more payback period.
Another aspect of the LED lights is the lifetime of the lights. LED lights last more than 50 times than the incandescent lights. That is why the replacement cost is also a great consideration. This excellent light will provide more Lifecycle savings than halogen and incandescent lights. The focus on the LED light for research started in recent decades.
Most of the prominent lighting manufacturer bank on the LED light as the most efficient lighting solution. This excellent lighting will provide more efficiency in terms of luminous efficacy. Different models and research suggest that LED research has more potentials to reveal in terms of energy consumption and lighting supremacy.
On the key drawback of LED lights of the narrow beam is addressed recently with the use of efficient reflectors. The material used for the narrow beam will provide great acceleration in the growth of the LED industry.