• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Light & artificial lighting systems

Extracts from this document...

Introduction

In a modern building daylight can provide most of our lighting needs for the vast majority of the working day. It is therefore unnecessary to spend too much time in designing artificial lighting systems. Introduction It is a common fact that people instinctively prefer natural light than to artificial light. This is usually due to the calming effects and the clarity it offers to which artificial light does not. Also, due to the rising energy costs and today's climate change concerns, using energy efficiently is now regarded to being financially sensible and now expected within the design on the building. However it is difficult to justify the cost for the considerable design of day lighting on the basis of energy saving alone. Here I will review and consider the impact that day lighting, also referred to as "natural" or "true light", has on the human psyche, the heath impacts, benefits and problems both daylight and artificial lighting may cause and in general, whether due to modern buildings now incorporating daylight as a standard factor whether it is necessary to spend a great deal of time in designing artificial lighting systems. These impacts are reviewed in this paper for buildings that are generally used for offices, retail and other large buildings. Daylight effects in housing have not been considered. Background history At the beginning of the 20th century, daylight was the principal light source in buildings, the artificial lights were merely used to enhance the readily available natural light. However within the short span of 30 years, by the 1940's electric lighting had altered the working environment by meeting the majority or in some circumstances all of the occupants' lighting requirements. During this period there have been continuous developments in the efficiency and types of lamps available. Artificial lighting is today used to provide lighting for the hours of darkness and also to provide visual affects to the interior and now becoming more popular, the exterior of a building. ...read more.

Middle

SAD (Seasonal Affective Disorder) is a type of depression that affects an estimated half a million people every winter between the months of September to April and in particular during the months of December, January and February. SAD, an acronym for Seasonal Affective Disorder, is caused by a chemical imbalance due to the shortening of daylight hours and the lack of sunlight. For many people SAD is a seriously disabling illness, preventing the person from functioning normally without stable medical treatment. For the majority though, it is a mild but debilitating condition causing discomfort but not severe enough for diagnosis as a clinically recognized syndrome. This is known as subsyndromal SAD or more commonly known as 'the winter blues.' As found on the site Sada. (http://www.sada.org.uk/whatis.htm) The most common method of admitting daylight into a building is through the use of glass windows. Glass windows are able to provide daylight, sunlight, ventilation and welcomed noise into the occupied space. Windows also provide the person with a view, however whether it is a pleasant view is another factor, out from the occupied space. The two most important attributes regarded for windows are the view and the amount of access of daylight they are able to allow into the building. The popular reason for a view is due to people wishing to have visual contact with the exterior and be aware of the changes in the weather and other activities. Another benefit of a view is to exercise the occupier's eyes more, due to the adjustment in focal length when looking outside. This can reduce eye strain, a common complaint for workers viewing computer screens for long periods. An alternative explanation as to why natural light is so preferred is due to such a negative perception people have of artificial lighting, therefore windows are always favoured. Generally is also felt that working by natural light results in less discomfort and stress, not due to the reason that natural right has been proven to be more beneficial ...read more.

Conclusion

However, with the glare and no actual guarantee that daylight will be successful in maximising visual performance, people will take action to reduce or eliminate daylight with shades or blinds if the glare is causing discomfort or increases difficulty in completing the tasks at hand. With the installation and managing of artificial lighting many high expense factors are concerned, whilst the complimentary natural light is available for the majority of the working day it, could be stated within the question that it is therefore unnecessary to spend too much time in designing artificial lighting systems. However I feel that natural light and artificial light could in fact compliment each other, by providing an acceptable balance between the two. Artificial auxiliary lighting would be applicable in situations where natural light is unavailable and where artificial lighting is able to enhance the visual appearance and combine the required amount of light to assist the occupier with allowing the required work to continue and not relying on the irregular weather. With regards to the design of lighting in a modern building, the intension is to achieve the required or appropriate lux value for that room. It is proven that a vast amount of design is required in the install of this complex lighting system as with the installation of any service, the shape (depth / height) of the room, colours to enhance the light and directions of the lamps to prevent glare determines the aspect that are essential even if the requirement is to install the artificial lighting as just a supplementary system. It is therefore my conclusion that even with the amount of daylight we be capable of achieving in the United Kingdom can in fact provide most of our lighting requirements for the vast majority of the working day, I do conclude that it is undoubtedly necessary to spend the required time, money and research in designing and installing adequate artificial lighting systems specifically as an auxiliary lighting system, to gain the benefits of a productive workforce. Word Count 3,138. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Design and Technology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Design and Technology essays

  1. Select either a qualitative or quantitative study, then make a critical analysis of it ...

    Although the specified last paragraph of the research study does not emphasize on the hypothesis as such, however it does make a clear definition of what the research is aimed at undertaking and makes mention of hypothesis based on

  2. Describe the benefits of technological developments in equipment and facility design in two contrasting ...

    The similarities between the two sports are that they are both looking to improve their games through the use of technology.

  1. Agfa Responding positively to a changing environment

    amended, altered and despatched using e-mail, fast ISDN lines and the internet. They can be downloaded and printed or transferred to CDs using recently developed copying equipment that retains image quality at a high level. Consumers can take CDs to an Agfa Image Center where the quality, format and resolution can be chosen.

  2. Bedside table development evaluation

    Although the customer will need to be confident about using PVA glue Looking again at this design it seems fairly straight forward to fit together and we don't believe we would have any real struggle assembling this type of product.

  1. Research to aid designing an interactive toy of game for children. One of the ...

    she is already aware that touching a certain body part will generate a particular response. Interactive Learning Toys There are also interactive toys that do not seem to high-tech but they include features that foster interactivity; they are also known as play gyms This can be seen in the interactive

  2. Were developing a shoe removal detector which identifies and notifies a person entering the ...

    Our estimated market size is large enough covering Indian and Chinese origin people who live in multi cultured Australia. 4. COST ESTIMATION Component $ (Aus) quant price 74c14 1.5 1 1.5 transistor 0.6 4 2.4 relay 3.95 1 3.95 IR beam circuit 20 1 20 battery 4 1 4 micro controller 9 1 9 estimate of manufacturing cost 40.85 5.

  1. Robotics.There are many different types of robots used to do many different types of ...

    Servo controlled robots are used for sensing their own positions and feeding back the sensed position to the control, and they do this in a way in which the control causes a particular path to be followed. A non servo robot has no way of determining if they have or

  2. Science Behind F1 Aerodynamic Features.

    _______________________________________________________________________________________ Figure 4: Pressure induced drag - formation of wingtip vortices on aircraft wings _______________________________________________________________________________________ Figure 5: Induced drag - wingtip vortices on the wings of an F1 car and airplane8 The F1 racecar is a complicated aerodynamic system - composed of skin friction, form and induced drag.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work