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En jämförelse mellan vita LED och lågenergilampor i korridor - med avseende på effekt och upplevelse

Dobshykava, Ina (2010)
Civil Engineering - Architecture (BSc)
Abstract
The project has been developed from a proposal made by RegionService (technical real estate for Region Skåne) and based on the replacement of light fixtures from fluorescent lamps to white LEDs (Light Emitting Diodes) in some hallways in Helsingborgs Lasarett (The Hospital in Helsingborg). The results turned out to be positive and further replacement were made in nearby buildings as well. My part in the project was to investigate the new fixtures and their performance in regards to brightness, illumination and whether the upgrade was cost-efficient. This was made with help of LCC (Life Cycle Cost) calculations, customer-experience and public surveys. The known advantages and drawbacks of the source of light were also a factor to be weighed... (More)
The project has been developed from a proposal made by RegionService (technical real estate for Region Skåne) and based on the replacement of light fixtures from fluorescent lamps to white LEDs (Light Emitting Diodes) in some hallways in Helsingborgs Lasarett (The Hospital in Helsingborg). The results turned out to be positive and further replacement were made in nearby buildings as well. My part in the project was to investigate the new fixtures and their performance in regards to brightness, illumination and whether the upgrade was cost-efficient. This was made with help of LCC (Life Cycle Cost) calculations, customer-experience and public surveys. The known advantages and drawbacks of the source of light were also a factor to be weighed in and used in the project conclusion. The results of the investigation showed that despite the white LED fixtures being a relatively new source of light and still under development, they were just as good as the previous lamp-fixtures in regards to the technical aspects of brightness and illumination. A comparison of the LCC-calculations showed that the LEDs were much more energy-efficient with savings up to 80% more energy in comparison to the previous lamp-fixtures. The drawn conclusion of this was that the investment in new LEDs would have repaid itself after two years from the time of installation and therefore being a reasonable time for an investment. The customer-experience survey showed that after the installation of the new LEDs people perceived the lights being significantly brighter compared to previous public surveys carried out before the installation of the new lights. Note, however, that the responses from the surveys after the installation were less than the responses before the installation. It would therefore be interesting to do a follow-up study one year after the first survey when the immediate effects of the changes to the environment have worn off.
In conclusion, the LEDs are a good source of light and may be seen as being even better than the replaced lamp-fixtures in several aspects. In addition to the measured differences, there are also differences in the technology, for instance LED is free of UV- and IR-radiation and mercury. It also has a lifespan of around 50 000 h, approximately 6 years constantly or 19 years as they would be operating in accordance with the regular operating-hours in the hospital-hallways. However, white LEDs also have some aspects to them that need further development, for example in the intensity of the light, the cooling of the chip inside the light (heat in the chip decreases its lifespan), and competitive prices. (Less)
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author
Dobshykava, Ina
organization
year
type
M2 - Bachelor Degree
subject
keywords
white led, light emitting diodes, fluorescent light, experience measurements
language
Swedish
id
1600102
date added to LUP
2010-05-07 00:00:00
date last changed
2018-10-18 10:10:35
@misc{1600102,
  abstract     = {The project has been developed from a proposal made by RegionService (technical real estate for Region Skåne) and based on the replacement of light fixtures from fluorescent lamps to white LEDs (Light Emitting Diodes) in some hallways in Helsingborgs Lasarett (The Hospital in Helsingborg). The results turned out to be positive and further replacement were made in nearby buildings as well. My part in the project was to investigate the new fixtures and their performance in regards to brightness, illumination and whether the upgrade was cost-efficient. This was made with help of LCC (Life Cycle Cost) calculations, customer-experience and public surveys. The known advantages and drawbacks of the source of light were also a factor to be weighed in and used in the project conclusion. The results of the investigation showed that despite the white LED fixtures being a relatively new source of light and still under development, they were just as good as the previous lamp-fixtures in regards to the technical aspects of brightness and illumination. A comparison of the LCC-calculations showed that the LEDs were much more energy-efficient with savings up to 80% more energy in comparison to the previous lamp-fixtures. The drawn conclusion of this was that the investment in new LEDs would have repaid itself after two years from the time of installation and therefore being a reasonable time for an investment. The customer-experience survey showed that after the installation of the new LEDs people perceived the lights being significantly brighter compared to previous public surveys carried out before the installation of the new lights. Note, however, that the responses from the surveys after the installation were less than the responses before the installation. It would therefore be interesting to do a follow-up study one year after the first survey when the immediate effects of the changes to the environment have worn off.
In conclusion, the LEDs are a good source of light and may be seen as being even better than the replaced lamp-fixtures in several aspects. In addition to the measured differences, there are also differences in the technology, for instance LED is free of UV- and IR-radiation and mercury. It also has a lifespan of around 50 000 h, approximately 6 years constantly or 19 years as they would be operating in accordance with the regular operating-hours in the hospital-hallways. However, white LEDs also have some aspects to them that need further development, for example in the intensity of the light, the cooling of the chip inside the light (heat in the chip decreases its lifespan), and competitive prices.},
  author       = {Dobshykava, Ina},
  keyword      = {white led,light emitting diodes,fluorescent light,experience measurements},
  language     = {swe},
  note         = {Student Paper},
  title        = {En jämförelse mellan vita LED och lågenergilampor i korridor - med avseende på effekt och upplevelse},
  year         = {2010},
}