An Assessment of Energy Efficiency and Carbon Reductions from Replacing Halogen Lamps with Light Emitting Diodes in Traffic Lights — A Case Study of Gloucestershire County's Initiative

2011 ◽  
Vol 22 (4) ◽  
pp. 361-374 ◽  
Author(s):  
Ashwin Sabapathy ◽  
John Whittaker
Keyword(s):  
Energy Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Traffic Lights ◽  
Halogen Lamps

Using the private finance initiative for energy efficiency projects at the urban scale

2016 ◽  
Vol 10 (1) ◽  
pp. 99-117 ◽  
Author(s):  
Alberto De Marco ◽  
Giulio Mangano ◽  
Fania Valeria Michelucci ◽  
Giovanni Zenezini
Keyword(s):  
Energy Efficiency ◽  
Urban Areas ◽  
Light Emitting Diode ◽  
Project Finance ◽  
Private Finance Initiative ◽  
Content Type ◽  
Light Emitting ◽  
Alternate Forms ◽  
Private Investors

Purpose – The purpose of this paper is to suggest the usage of the project finance (PF) scheme as a suitable mechanism to fund energy efficiency projects at the urban scale and present its advantages and adoption barriers. Design/methodology/approach – A case study is developed to renew the traffic lighting system of an Italian town via replacement of the old lamps with new light-emitting diode (LED) technology. Several partners are involved in the case project to construct a viable PF arrangement. Findings – The case study presents the viability of the proposed PF scheme that provides for acceptable financial returns and bankability. However, it also shows that the need for short concession periods may call for a public contribution to the initial funding to make the project more attractive to private investors. Practical implications – This case study is a useful guideline for governments and promoters to using the PF arrangement to fund energy efficiency investments in urban settings. It helps designing an appropriate PF scheme and understanding the advantages of PF to reduce risk and, consequently, increase the debt leverage and profitability of energy efficiency projects. Originality/value – This paper contributes to bridging the gap about the lack of works addressing the implementation of the PF mechanism in the energy efficiency sector in urban areas. The importance of this paper is also associated with the shortage of traditional public finance faced by many cities that forces to seek for alternate forms of financing.

scholarly journals Light-emitting diodes: A case study in engineering research

MRS Bulletin ◽  
2017 ◽  
Vol 42 (12) ◽  
pp. 880-881 ◽  
Author(s):  
Prachi Patel ◽  
Jeffrey Tsao
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Engineering Research

NOISE CHARACTERISTICS OF 340 nm AND 280 nmGaN-BASED LIGHT EMITTING DIODES

2004 ◽  
Vol 14 (03) ◽  
pp. 702-707
Author(s):  
SHAYLA SAWYER ◽  
SERGEY L. RUMYANTSEV ◽  
NEZIH PALA ◽  
MICHAEL S. SHUR ◽  
YURIY BILENKO ◽  
...  
Keyword(s):  
Light Intensity ◽  
Quality Factor ◽  
Light Emitting Diodes ◽  
Low Frequency ◽  
Low Frequencies ◽  
Light Emitting ◽  
Visible Wavelength ◽  
Noise Characteristics ◽  
Uv Leds ◽  
Halogen Lamps

Low frequency fluctuations in light intensity of 340 nm and 280 nm GaN -based light emitting diodes (LEDs) are compared with noise properties of other commercially available UV and visible wavelength LEDs and halogen lamps. At low frequencies, LEDs can exhibit lower levels of noise than halogen lamps. An LED noise quality factor β is estimated for the UV LEDs.

scholarly journals Impact of Amine Additives on Perovskite Precursor Aging: A Case Study of Light-Emitting Diodes

2021 ◽  
pp. 5836-5843
Author(s):  
Yan Xu ◽  
Weidong Xu ◽  
Zhangjun Hu ◽  
Julian A. Steele ◽  
Yang Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Amine Additives

scholarly journals Radiation-damage-induced phasing: a case study using UV irradiation with light-emitting diodes

2016 ◽  
Vol 72 (3) ◽  
pp. 395-402 ◽  
Author(s):  
Daniele de Sanctis ◽  
Chloe Zubieta ◽  
Franck Felisaz ◽  
Hugo Caserotto ◽  
Max H. Nanao
Keyword(s):  
Radiation Damage ◽  
Disulfide Bonds ◽  
Light Emitting Diodes ◽  
Low Cost ◽  
Ease Of Use ◽  
X Rays ◽  
Light Emitting ◽  
Uv Lasers ◽  
Uv Leds

Exposure to X-rays, high-intensity visible light or ultraviolet radiation results in alterations to protein structure such as the breakage of disulfide bonds, the loss of electron density at electron-rich centres and the movement of side chains. These specific changes can be exploited in order to obtain phase information. Here, a case study using insulin to illustrate each step of the radiation-damage-induced phasing (RIP) method is presented. Unlike a traditional X-ray-induced damage step, specific damage is introducedviaultraviolet light-emitting diodes (UV-LEDs). In contrast to UV lasers, UV-LEDs have the advantages of small size, low cost and relative ease of use.

Light-emitting diodes in street and roadway lighting – a case study involving mesopic effects

2012 ◽  
Vol 45 (2) ◽  
pp. 217-229 ◽  
Author(s):  
AM Kostic ◽  
MM Kremic ◽  
LS Djokic ◽  
MB Kostic
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Roadway Lighting

scholarly journals Wavelength-stable rare earth-free green light-emitting diodes for energy efficiency

2011 ◽  
Vol 19 (S4) ◽  
pp. A962 ◽  
Author(s):  
Christian Wetzel ◽  
Theeradetch Detchprohm
Keyword(s):  
Energy Efficiency ◽  
Rare Earth ◽  
Light Emitting Diodes ◽  
Green Light ◽  
Light Emitting
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