SIMULATION OF LED LIGHT INTENSITY ATTENUATIONS IN THE BUBBLE CURTAIN ENCLOSURE

Rong-Yuan Jou, Cheng-Wei Du
Abstract:
To measure the light intensity profiles of LEDs light sources in different media (air, water, and air bubble curtains) to simulate the cultivate environments of hydrogen production, three colors of LEDs lights, red (620.084nm), white (464.979nm), and blue (458.317nm), respectively, are used to simulate light intensity in the space of a rectangular glass enclosure where photosynthetic bacteria is supposed to be cultured inside. The illuminations inside the enclosure are measured by an optical fiber which is connected to the AvaSpec-2048 spectrometer. Photon fluxes are measured by LI-COR-190SA with LI-1400 data logger. From experimental measurements, the minimum illuminances in the enclosure with three different media, respectively, it is found that in the water medium case, its value is the largest and in the air medium case, its value is the lowest. Whatever volumetric air rates in air-bubbled media, the minimum illuminances are between the values in the air medium cases and in water medium cases.
Keywords:
air bubble, enclosure, illumination, LED light
Download:
IMEKO-WC-2015-TC20-377.pdf
DOI:
-
Event details
Event name:
XXI IMEKO World Congress
Title:

Measurement in Research and Industry

Place:
Prague, CZECH REPUBLIC
Time:
30 August 2015 - 04 September 2015
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