StudentShare solutions
Triangle menu

Utilisation of Electrical Energy - Assignment Example

Nobody downloaded yet

Extract of sample
Utilisation of Electrical Energy

The average consumption of electric energy around the world is approximately 19 % of the total electric energy produced. This calls for the specialized improvement in the lighting efficiency to save energy which translates to conservation of the environment. Different environment requires different lighting luminaries. The choice of a specific lighting luminary in a given environment depends on several factors. Some of the factors that influence the choice of lighting luminaires in given environments include the availability of natural light, the intensity of light required, the availability of energy sources – in this case electricity – among others. This paper discusses the common discharge luminary in different environments. The chosen environments include office building, an indoor – 5 –a – side – pitch, and Cul-de-sac street lighting Office Building For efficiency lighting in an office building, there must be sufficient source of light. This implies that the lighting luminaries used must have a high light intensity. Since the light is always switched on, the luminary must have the capacity to save energy. Considering this factors among others, the best luminary suited for an office building is Fluorescent Lamp. This is the best choice due to the following advantages: Fluorescent lights are cheap Fluorescent lamps generally have a very good luminous efficacy Fluorescent lamps have a very long lamp life (Ranges from 10 000 hours to 16000 hours). This implies less maintenance costs They come in large varieties of CCT and CRI Fluorescent Lamp Construction, Operation and Associated Circuitry The associated circuitry of fluorescent lamp is shown in figure 1 below. Figure 1. The associated circuitry of a fluorescent lamp. Construction and Operation In a fluorescent lamp, light is predominantly produced by fluorescent powders which are activated by ultra – violet radiation originating from mercury. This type of light source is characterized by low – pressure gas discharge light source. Physically, the lamp is composed of a long tubular pipe that contains an electrode on both sides. This tubular pipe is filled with low pressure mercury vapour which is enhanced with an inert gas, in this case, argon, for starting. The emission of the light occurs in the ultraviolet region. The wavelength of the energy emitted falls in the range of 254 – 185 nanometres. The ultraviolet radiation produced is, then, converted into light by the phosphor layer which is coated on the inside of the tube. Most of the initial photon energy, 65 %, is lost by the dissipation since one ultraviolet photon produces only one visible photon. Moreover, the final spectral of the light that is distributed can be varied. This is by different combinations of phosphors. The CCT (Correlated Colour Temperature) of fluorescent light varies from 2700 Kelvin to 6500 kelvin. On the other hand, the colour rendering indices varies from 50 to 95. Different fluorescent lamps have different luminous efficacy depending on their construction. The latest fluorescent lamp has a luminous efficacy of 100 lm/W. This excludes the ballast losses. The operation of a fluorescent lamp is shown in figure 2 below. Figure 2. The operation of a fluorescent lamp. Fluorescent lamps have an ever increasing current. This is harmful since it can destroy the lamp (National Industrial Pollution Control Council. Electric and Nuclear Sub-Council, United States. Dept. of Commerce, 1972). Thus, to correct this, it is designed in such a way that it limits the lamp current. This is seen in instances where it displays the negative voltage to counteract the ever increasing c ...Show more

Summary

The average consumption of electric energy around the world is approximately 19 % of the total electric energy produced. This calls for the specialized improvement in the lighting efficiency to save energy which translates to conservation of the environment…
Author : beahanoma
Utilisation of Electrical Energy essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the assignment on your topic
"Utilisation of Electrical Energy"
with a personal 20% discount.
Grab the best paper

Check these samples - they also fit your topic

Engineering Principles, Electrical Networks
The author of this paper gives answers on the test on Engineering Principles, Electrical Networks and Three-Phase Supplies. After every question, the short solution is attached. The author calculates line and phase currents, total power, resistance and reactance of each phase in Delta Connected load.
2 pages (500 words) Assignment
Electrical Energy
Thus it is necessary to have large number of options towards meeting the growing demand while causing very less impact on the earth (Sheffield et al, 63). The major consumption of energy in United States has taken place during the period of major investments in infrastructure expansion.
2 pages (500 words) Essay
Utilisation - Elecrical engineering
The lighting system in an office building has characteristic of high efficacy, glare ability and colour rendering. To achieve this, low pressure mercury lamp is sufficient to produce these requirements. This type of system is also known as
4 pages (1000 words) Assignment
Utilisation - electrical engineering
In selecting discharge lighting luminary for the given environments, all these factors were taken into consideration. An office building requires a lighting system that has a high colour rendering, efficacy and glare
4 pages (1000 words) Assignment
ELECTRICAL POWER GENERATION SYSTEM
This method is on the principle that generation of electricity is as a result of loop of wire, or copper disc across the magnet poles. For the use of electric appliances, it is the sole method of delivering consumers electricity. The other related electricity
4 pages (1000 words) Assignment
ELECTRICAL POWER GENERATION SYSTEM
The National Grid is the source of high-voltage of electricity power transmission in Britain, which links power stations and other key substations and make sure the generation of electricity is possible in England, like Scotland and
4 pages (1000 words) Assignment
Solving problems in electrical science
Therefore, if the two vectors are oriented at an angle , the relationship is modified as below. According to Fleming’s left whenever a current carrying conductor is placed in a magnetic
10 pages (2500 words) Assignment
Electrical Principles
As we know that the LEDs are to be connected in series and in series connection voltage drops and current remains the same. For the calculation of
6 pages (1500 words) Assignment
Vessel electrical Distribution system
A ship can be as large as a city in terms of population, resources, and needs. Ships need power or electricity to make them operational.
17 pages (4250 words) Assignment
Energy
Taylor and Parish (2008, p.viii) state that the energy sector will be one of the biggest growth industries in coming future. This is because it is estimated that the demand for electricity will rise dramatically by the year 2020. By all means, energy conservation is the most
4 pages (1000 words) Assignment
Hire a pro to write
a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
Apply my DISCOUNT
Comments (0)
Click to create a comment
Contact Us