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302 results on '"Hirahara, Hiroyuki"'

4. Development of an Air Assisted Fuel Atomizer (liquid siphon type) for a continuous combustor

Author

Watanawanyoo, Pipatpong, Chaitep, Sumpun, and Hirahara, Hiroyuki

Subjects
Turbines -- Product development, Combustion chambers -- Varieties, Combustion chambers -- Design and construction, Science and technology
Abstract

This research was the study of a fuel injection system in continuous combustor. Air atomizing nozzle is developed to good efficiency injection and used low air pressure (68.95-275.79kPa) to assist the atomizing nozzle. Refined palm oil and automotive diesel oil were the fuels for the experiment for the system of atomization. The atomizer was designed in a manner that air could flow through the small nozzle. Consequently, the low-pressure airflow could induce fuel by siphoning and break oil into small fine droplets that were delivered through the outlet. The aim of design and develop a continuous combustor is emphasized on simplicity for construction, inexpensive, good stability and reduce import fuel for continuous combustor. Material for combustor chamber is stainless steel in order to avoid oxidation at high combustion temperature. The results showed practical combustion performance using refined palm oil as fuel with ultra-low CO and HC emissions less than 206 ppm and 7 ppm. Another main advantage is a clean combustion, as no sulfur content in the fuel. As a result, the combustor performance testing was evaluated with refined palm oil and LPG. By regulating atomizing air pressure between 68.9995- 275.79 kPa (10-40psi, Siphon height 0.45 m) and regulating LPG pressure of 6.8 kPa (1 psi), result showed that 0.0001167-0.00019936 kg/s of fuel consumption, hot gas produced from combustion was in the range of 308-498[degrees]C depending on oxidizing air mass flow regulated between 0.0695-0.1067kg/s. The LPG mass flow was regulated 0.000489 kg/s in order to sustain the combustion stability. Key Words: Liquid siphon, fuel, atomizer, combustor, INTRODUCTION There are several different types of gas turbine engines, and all turbine engines have some parts in common. All turbine engines have a combustor, or burner, in which the [...]

Published
2009

31. A Case of Successful Treatment of Ruptured Pancreaticoduodenal Artery Aneurysm Caused by Celiac Artery Dissection

Author

Kimura, Naruhiro, primary, Tsuchiya, Atsunori, additional, Nakamura, Akihiro, additional, Ueda, Muneatsu, additional, Yoshikawa, Seiichi, additional, Hoshi, Takahiro, additional, Takano, Akito, additional, Takagi, Satoshi, additional, Miura, Tsutomu, additional, Yamada, Satoshi, additional, Yanagi, Masahiko, additional, Tani, Tatsuo, additional, and Hirahara, Hiroyuki, additional

Published
2018
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40. Development of Liquid Micro Jet with Pulsed Laser Aiming for Effective Drug Delivery

Author

Ara, Hemel Rokhsan, Takahashi, Kento, and Hirahara, Hiroyuki

Subjects
Bubble, Micro jet, Shadowgraph Technique
Abstract

平成27年度衝撃波シンポジウム (2016年3月7日-9日. 熊本大学 黒髪南地区）熊本市, 熊本県, Symposium on Shock Waves in Japan, FY2015 (March 7-9, 2016. Kumamoto University), Kurokami Chuo-ku, Kumamoto, Japan, 資料番号: SA6000049045, レポート番号: 1C2-2

Published
2016

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