scholarly journals G302 Measurement of oxyecoia pressure distribution in a fuel cell using pressure sensitive paint(1)

2006 ◽  
Vol 2006 (0) ◽  
pp. _G302-a_
Author(s):  
Suguru Inagaki ◽  
Hiroki Nagai ◽  
Keisuke Asai
Keyword(s):  
Fuel Cell ◽  
Pressure Distribution ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive

Measurement of Oxygen Partial Pressure Distribution in a Fuel Cell Using Pressure-Sensitive Paint

2007 ◽  
Author(s):  
Suguru Inagaki ◽  
Hiroki Nagai ◽  
Keisuke Asai
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Partial Pressure ◽  
Water Repellent ◽  
Generation Process ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive ◽  
Micro Channels ◽  
Current Densities ◽  
Local Temperature Distribution

To improve efficiency and service life of a fuel cell, it is important to understand the dynamic behavior of oxygen molecules in the cell. In other words, we need to know the oxygen concentration distribution over electrode planes and inside diffused layers in addition to its time variation. We applied the Pressure-Sensitive Paint (PSP) technique to this problem, attempting to measure distribution of partial pressure oxygen along micro channels of a fuel cell. To prevent the effect of water produced by the power generation process, we developed a water-repellent PSP that can withstand heat and humidity produced by power generation. Using this paint, partial oxygen distribution along the micro channels was successfully visualized, although there were noticeable effects of local temperature distribution on the absolute accuracy for the conditions with higher current densities.

Pressure-Sensitive Paint Measurement of Pressure Distribution in a Supersonic Micronozzle

AIAA Journal ◽  
2008 ◽  
Vol 46 (1) ◽  
pp. 215-222 ◽  
Author(s):  
H. Nagai ◽  
R. Naraoka ◽  
K. Sawada ◽  
K. Asai
Keyword(s):  
Pressure Distribution ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive

Pressure Sensitive Paint Visualization of Pressure Distribution of Externally Pressurized Circular Thrust Gas Bearing With a Single Gas Supply Hole: Experimental Validation of Variation of Pressure Distribution by Supply Pressure

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Tomohiko Ise ◽  
Shuma Kobayashi ◽  
Kazuhiro Itoh ◽  
Toshihiko Asami
Keyword(s):  
Pressure Distribution ◽  
Complementary Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive ◽  
Temperature And Pressure ◽  
Gas Bearing ◽  
Luminescence Characteristics ◽  
Gas Supply ◽  
Good Agreement

This study investigated the use of pressure sensitive paint (PSP) as new measuring technique for measuring the pressure distribution of a gas bearing. An externally pressurized circular thrust gas bearing with single gas supply hole was used as the test bearing to investigate the suitability of this technique. The test bearing was 30 mm in diameter, with a gas supply hole of diameter 0.7 mm. A coat of PtTFPP, the substance used as the PSP, was applied to the bearing surface using an air-assisted spray. The PSP luminescence characteristics were calibrated before the tests because of their dependency on temperature and pressure. The pressure distribution was obtained by averaging 50 images captured by a 12-bit complementary metal-oxide semiconductor (CMOS) camera. These experimental results were compared with the results of a numerical analysis based on the divergence formulation method. There was good agreement between the experimental and analytical results, thus demonstrating the effectiveness of using PSP for pressure distribution measurements.

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