Superemissive light pipe for TPV applications

1997 ◽  
Author(s):  
Mark K. Goldstein ◽  
Larry G. DeShazer ◽  
Alexandr S. Kushch ◽  
Steven M. Skinner
Keyword(s):  
Light Pipe

Filling the Light Pipe

Science ◽  
2010 ◽  
Vol 330 (6002) ◽  
pp. 327-328 ◽  
Author(s):  
D. J. Richardson
Keyword(s):  
Light Pipe

Semi-imaging light pipe for collecting weakly scattered light

1998 ◽  
Author(s):  
George W. Hopkins ◽  
Tad D. Simons
Keyword(s):  
Scattered Light ◽  
Light Pipe

Monte Carlo Thermal Model of an Integrating Light Pipe for Rapid Thermal Processing

1996 ◽  
Vol 429 ◽  
Author(s):  
J. C. Thomas ◽  
D. P. Dewitt
Keyword(s):  
Monte Carlo ◽  
Thermal Processing ◽  
Monte Carlo Model ◽  
Rapid Thermal Processing ◽  
Width Ratio ◽  
Temperature Uniformity ◽  
System Parameters ◽  
Light Pipe ◽  
End Wall ◽  
Cavity Width

AbstractA Monte Carlo model is developed to simulate transient wafer heating as a function of system parameters in a kaleidoscope- or integrating light-pipe type cavity with square cross-section. Trends in wafer temperature uniformity are examined as a function of length-to-width ratio, cavity width, and the number of heating lamps. The effect on temperature determination by a radiometer placed in the bottom end wall of the cavity is simulated.

Combining light pipe and stack ventilation — some development aspects

2000 ◽  
pp. 395-400 ◽  
Author(s):  
Kai Sirén ◽  
Tapio Helenius ◽  
Li Shao ◽  
Shaun Smith ◽  
Brian Ford ◽  
...  
Keyword(s):  
Light Pipe ◽  
Stack Ventilation

scholarly journals Modeling of Light Pipes for the Optimal Disposition in Buildings

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4323 ◽  
Author(s):  
Cristina Baglivo ◽  
Marina Bonomolo ◽  
Paolo Maria Congedo
Keyword(s):  
Aspect Ratio ◽  
Strong Correlation ◽  
Internal Surface ◽  
Variable Number ◽  
Horizontal Position ◽  
Simulated Model ◽  
Light Pipe ◽  
Minimum Value ◽  
Plant Area ◽  
Simple Models

A light pipe is an excellent solution to transport and distribute daylight into environments without or with little lighting, guaranteeing comfort inside the rooms. As stated in the literature, the evaluation of the performances of light pipes presents numerous complexities, making the work very difficult for technicians and designers. This study is aimed to present a methodology that is able to identify the potential of light pipes using indices such as daylight autonomy (DA), continuous daylight autonomy (DAc), and useful daylight illuminance (UDI). This paper presents an analysis of daylight obtained by several configurations of simple models of light pipes installed into a 5 × 5 m plant area room. All simulations are carried out in a DAYSIM environment, which allows calculating the annual availability of daylight based on a RADIANCE raytracer backward. Several daylight conditions were analyzed for different light pipe configurations, considering different pipe lengths and a variable number of light pipes. The light pipes are tested also in the horizontal position, for different orientations. The results of all the combinations were compared with the performances of a window with dimensions equal to 1/8 of the internal surface, which was in accordance with the minimum value to be guaranteed by the Italian Regulation (D.M. 5 July 1975 n. 190) for different orientations. The results indicated a difference in daylight distribution, showing a strong correlation between the percentage levels of DA and DAc with the length and number of pipes, during different periods of the year. The simulated model is strongly influenced by the aspect ratio (R = diameter/length). The results show that the illuminance levels decrease drastically, increasing the length.

Modelling light-pipe performances—a natural daylighting solution

2003 ◽  
Vol 38 (7) ◽  
pp. 965-972 ◽  
Author(s):  
David Jenkins ◽  
Tariq Muneer
Keyword(s):  
Light Pipe
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