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You searched for +publisher:"NSYSU" +contributor:("Shih-Ming Chiang"). Showing records 1 – 2 of 2 total matches.

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NSYSU

1. Wu, Chien-Lung. The experimental tests and analysis of a PEM fuel cell.

Degree: Master, Mechanical Engineering, 2000, NSYSU

The experimental tests and analysis of a fuel cell unit and a 150 W fuel cell stack are performance in this research. The experimental items in this study are various the types of flow channels, fasten torque, inlet gas pressure, Pt loading density, oxidizers, electron collector type etc. Through above a series of the tests, we can understand the key factors which influence the performance of the PEMFC. The experimental results can also provide us references when one assemble a fuel cell stack in future. PEMFC can start quickly at low temperature and achieves stable output voltage. When the 8 N-M torque is applied to fasten the reaction chamber, the contact resistance between electrode and electron collector reaches a minimum value. By designing the flow channel properly, the membrane hydration can remain a good state so that the conductivity of the proton exchange membrane can not be hinder. We found that the optimum channel among three types of the test channels is the conventional channel with the rib width 2 mm. When the output power is largest. Our experiments display that the increase of Pt loading in cathode can improve PEMFC performance. At certain voltage, there is a critical value in Pt loading. PEMFC performance can not be improved when Pt loading increases over this value. When the inlet pressure in cathode side increase to 10~20 psi higher than the pressure in anode side, the output power can improve apparently. Keyword: Proton exchange membrane, Pt loading, electron collector. Advisors/Committee Members: Shih-Ming Chiang (chair), Lung-Jeng Chen (committee member), Chin-Chia Su (chair), Ming-San Lee (committee member).

Subjects/Keywords: Proton exchange membrane; electron collector; Pt loading

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Wu, C. (2000). The experimental tests and analysis of a PEM fuel cell. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705100-173034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Wu, Chien-Lung. “The experimental tests and analysis of a PEM fuel cell.” 2000. Thesis, NSYSU. Accessed January 26, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705100-173034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Wu, Chien-Lung. “The experimental tests and analysis of a PEM fuel cell.” 2000. Web. 26 Jan 2020.

Vancouver:

Wu C. The experimental tests and analysis of a PEM fuel cell. [Internet] [Thesis]. NSYSU; 2000. [cited 2020 Jan 26]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705100-173034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wu C. The experimental tests and analysis of a PEM fuel cell. [Thesis]. NSYSU; 2000. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0705100-173034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


NSYSU

2. Yang, Sheng-Yu. Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler.

Degree: Master, Mechanical Engineering, 2000, NSYSU

Abstract The combustion characteristics and the pollution of the exhausting products under various designing and operating conditions are studied in this research. In our experiments, the furnace fuel is diesel oil. By adjusting the flow rate of both axial air and tangential air the different equivalence ratios and swirl numbers can be obtained. The controlling ranges of the various experimental parameters include equivalence ratio from 0.8 to 1.1, swirl number from 0 to 1.0, recirculated flue gas from 0% to 12%, and jet spray angle 45?and 80? The effect of the controlling variables on the combustion characteristics and pollutant formations within combustion chamber are studied in this reseacher. A photographic technology is used to study the flame structures to help us understanding the behaviors of the flame under various operating condition. Form the experimental results, we find that the recirculation generated by swirl influence the produce temperature and its distribution with combustion chamber. The swirl is useful for flame expanding, and increases the mixing of fuel and air, so that the complete reaction can achieve near the burner. When the jet spray angle is 80? and swirl number is 0.6, the exhaust rate of NOx in the exhaust duct is the lowest, and the combustion in combustion chamber is the best. At equivalence ratio 0.9, the effects of the flow rate of the recirculating flue gason the flame structure and the exhaust emission is not too much. Our experiments display that the optimized operating condition is jet spray angle 80? swirl number 0.6 and flue gas recirculation 8%. NO can be reduced about 15~20% in this condition. When no swirl occurs, the color of flame displays white-yellow due to the burning of soot in this region. For the condition with swirl, the color of the outside flame displays orange-yellow. In primary combustion zone, the flame exhibits the red color which is due to the radiation of CO2 and water vapor. Advisors/Committee Members: Ming-San Lee (chair), Shih-Ming Chiang (chair), Long-Jeng Cheng (committee member).

Subjects/Keywords: swirl; spray angle; NOx

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Yang, S. (2000). Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706100-101213

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Yang, Sheng-Yu. “Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler.” 2000. Thesis, NSYSU. Accessed January 26, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706100-101213.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Yang, Sheng-Yu. “Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler.” 2000. Web. 26 Jan 2020.

Vancouver:

Yang S. Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler. [Internet] [Thesis]. NSYSU; 2000. [cited 2020 Jan 26]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706100-101213.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yang S. Effects of Swirl Numbers and Spray Angles on Combustion Characteristic and Concentration of Pollutants in a Boiler. [Thesis]. NSYSU; 2000. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706100-101213

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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