Research About Pulverization of Rice Using Underwater Shock Wave by Electric Discharge

2010 ◽  
Author(s):  
Makoto Ide ◽  
Seiichi Irie ◽  
Nobuyuki Matsuo ◽  
Asuka Oda ◽  
Shigeru Tanaka ◽  
...  
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
Food Samples ◽  
Frictional Heat ◽  
Underwater Shock Wave ◽  
Manufacturing Method ◽  
Application Techniques ◽  
Rate Improvement ◽  
Underwater Shock ◽  
Rice Powder

In recent years, it is expected that the consumption of rice powder in Japan increases for food self-support rate improvement. The consumption of enormous energy during making rice powder and loss of starch in rice by frictional heat is occurred by using the existing manufacturing method. Application techniques using underwater shock wave which is generated by high voltage electric discharge are studied in our laboratory. When some food samples are treated by underwater shock wave, following advantages are obtained, a little heat treatment, decreasing consumption of the energy, and shortening of processing time. In food processing using underwater shock wave, the spalling destruction due to propagation characteristics of shock wave and mediums, which have difference density, is used. In this study, the pressure vessel for pulverization of rice was developed, and then, intensity of pressure in vessel is measured by way of experiment, and simulated numerical analysis.

scholarly journals The Basic Research for Pulverization of Rice Using Underwater Shock Wave by Electric Discharge

2011 ◽  
Vol 5 (2) ◽  
pp. 115-130 ◽  
Author(s):  
Makoto Ide ◽  
Manabu Shibuta ◽  
Naoyuki Wada ◽  
Shigeru Tanaka ◽  
Hideki Hamashima ◽  
...  
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
Basic Research ◽  
Underwater Shock Wave ◽  
Underwater Shock

Study of the Suitable Pressure Vessel for the Rice-Powder Manufacturing Using the Underwater Shock Wave

2011 ◽  
Author(s):  
K. Shimojima ◽  
Y. Miyafuji ◽  
S. Tanaka ◽  
K. Naha ◽  
T. Aka ◽  
...  
Keyword(s):  
Shock Wave ◽  
Pressure Vessel ◽  
Pressure Vessels ◽  
Powder Particle Size ◽  
Underwater Shock Wave ◽  
Manufacturing Efficiency ◽  
Self Sufficiency ◽  
Shock Wave Generation ◽  
Underwater Shock ◽  
Rice Powder

Self-sufficiency in food is very low (about 40%) in Japan. Therefore, the rice powder is paid to attention, because it can be processed to the udon (noodle) and bread etc. We have already developed the rice-powder disintegrator using the underwater shock wave by the electrode. But it has not been cleared what is the most suitable pressure vessel. The purpose of this study is to investigate the most suitable configuration of the pressure vessels for manufacturing the rice-powder using the underwater shock wave.Experimental conditions to manufacture the rice-powder (particle size is 100μm) is clarified using this device.Moreover, the manufacturing efficiency of the rice-powder, the relation between the number of the shock wave generation and the grain degree of rice-powder is clarified.

Study on the Relationship between Some Foods and Underwater Shock Wave Using the Explosion of the Detonating Fuse

2007 ◽  
Vol 566 ◽  
pp. 197-202 ◽  
Author(s):  
Asuka Oda ◽  
Naoki Okamoto ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Food Processing ◽  
Control Sample ◽  
Food Samples ◽  
Heating Effect ◽  
Underwater Shock Wave ◽  
Japanese Radish ◽  
Processed Sample ◽  
Underwater Shock ◽  
The Relationship

When an explosive in water is exploded, shock wave from the explosive propagates in water as underwater shock wave. Using a detonating fuse as an energetic source, an oblique underwater shock wave with high pressure is obtainable and possible to be utilized for various applications. It is expected that the use of water can inhibit the heating effect on the shock processed sample. In the present research, the authors are intended to use underwater shock wave for the food processing. After loading underwater shock wave against some foods, it is expected to show some advantageous effects for the food processing, such as, softening, improved permeability, and grinding foods. However, such advantageous effects are changed depending upon the condition of the received food. In this research, the foods containing high amount of water were treated by the underwater shock wave. Japanese radish and apple were used as food samples. The change in their hardness, permeability and so on were measured. These results were compared with the control sample in which the underwater shock wave was not applied.

Experimental Study of the Underwater Shock Wave on the High-Voltage Electric Discharge by Carbon Fiber

2013 ◽  
Vol 767 ◽  
pp. 261-264
Author(s):  
Hironori Maehara ◽  
Shigeru Tanaka ◽  
Kazuyuki Hokamoto ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Experimental Study ◽  
Carbon Fiber ◽  
Thin Plate ◽  
Electric Discharge ◽  
High Voltage ◽  
High Capacity ◽  
Underwater Shock Wave ◽  
Underwater Shock

Carbon fiber is employed to induce underwater shock wave by the high-voltage electric discharge. By the release of an energy 10 kJ stored in a high-capacity condenser bank, carbon fiber was exploded showing the evidence inducing underwater shock wave effectively to a thin plate to be formed.

Design and Development of Pressure Vessel for Improvement of Manufacturing Rice-Powder Efficiency Using Underwater Shock Wave

2012 ◽  
Author(s):  
Kazuyuki Naha ◽  
Ken Shimojima ◽  
Yoshitaka Miyafuji ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Pressure Vessel ◽  
The Other ◽  
Underwater Shock Wave ◽  
College Of Technology ◽  
Design And Manufacturing ◽  
Highly Effective ◽  
Underwater Shock ◽  
Powder Manufacturing ◽  
Rice Powder

The rice-powder paid to attention in Japan, because the various food made by rice-powder. But, conventional method of manufacturing rice-powder generates heat when crushing of rice. One the other hand, the pressure vessel of oval structure for manufactured rice-powder using underwater shock wave has been developed in Okinawa National College of Technology. The merits of this system manufacture rice-powder without heating. But, the efficiency of this system is low. Therefore, in this paper, we propose new design of pressure vessel for the highly effective rice-powder manufacturing. To design a new pressure vessel, it is clear that the performance of the oval structure pressure vessel. And, we design and manufacturing new pressure vessel for the highly effective rice-powder manufacturing.

Development of the Pressure Vessel for Manufacturing the Rice-Powder Using the Underwater Shock Wave

2011 ◽  
Author(s):  
Y. Miyafuji ◽  
K. Shimojima ◽  
S. Tanaka ◽  
K. Naha ◽  
T. Aka ◽  
...  
Keyword(s):  
Shock Wave ◽  
Pressure Vessel ◽  
Food Processing ◽  
High Speed ◽  
Pressure Vessels ◽  
Underwater Shock Wave ◽  
Underwater Shock ◽  
And Performance ◽  
Oval Shape ◽  
Rice Powder

We have been researching the food processing technology by using the underwater shock wave. The rice-powder used for various foods has been demanded in Japan now. The purpose of this study is designing and development of the pressure vessels for the manufacturing rice-powder device using the underwater shock wave. The pressure vessel was made into the oval shape which focuses the energies generated under the underwater shock wave. The speed and pressure of the shock wave which were generated underwater are confirmed with a high speed camera. The durability and performance of this device is confirmed by manufacturing the rice-powder.

Examination of Power Supply of the Rice Powder Making Device With the Pressure Vessel Having the Clear Window Using Underwater Shock Wave

2012 ◽  
Author(s):  
R. Matsubara ◽  
O. Higa ◽  
T. Matsui ◽  
K. Higa ◽  
K. Shimojima ◽  
...  
Keyword(s):  
Shock Wave ◽  
High Voltage ◽  
Power Supply ◽  
Pressure Vessel ◽  
Power Supplies ◽  
High Voltage Power Supply ◽  
Underwater Shock Wave ◽  
Powder Production ◽  
Underwater Shock ◽  
Rice Powder

We have developed the rice powder production device using the underwater shock wave. The spark by a high-voltage power supply was used for generating of a shock wave. We developed two types of the high voltage power supplies, the CR circuit using transformer, Cockcroft-Walton circuit (CW circuit). We developed the vessel having the window for observation of shock wave. Generated pressure and velocity of the shock wave are evaluated using shadowgraph method used two power supplies (CR circuit and CW circuit).

Destruction of Concrete Block Using Underwater Shock Wave Generated by Electric Discharge

2006 ◽  
Author(s):  
Masahiko Otsuka ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Electric Discharge ◽  
High Voltage ◽  
High Speed ◽  
Concrete Block ◽  
Metal Wire ◽  
High Speed Camera ◽  
Underwater Shock Wave ◽  
Underwater Shock ◽  
Made In

In this study, the destruction of concrete block using underwater shock wave generated by electric discharge was studied. Initially, the shock wave generated by electric discharge was investigated by optical observation using a high-speed camera and pressure measurement. A comparison of the underwater shock wave generated from the electrode with and without connecting a metal wire was made. A metal wire was connected to an electrode and a high voltage impulsive current was passed through it to generate the underwater shock wave. A hole was made in the concrete block, filled with water and an electrode was inserted into the hole, which acts as a pressure vessel. The electric current was passed through this electrode to generate underwater shock wave for the destruction of concrete block.

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