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http://dx.doi.org/10.5369/JSST.2003.12.2.095

The development of ultrasonic transmitter to enhance the efficiency of heat transfer rate in boiler  

Heo, Pil-Woo (Korea Research of Machinery and Materials)
Lee, Yang-Lae (Korea Research of Machinery and Materials)
Lim, Eui-Su (Korea Research of Machinery and Materials)
Koh, Kwang-Sik (School of Electronic Eng., Kyungpook National Univ.)
Publication Information
Journal of Sensor Science and Technology / v.12, no.2, 2003 , pp. 95-101 More about this Journal
Abstract
Ultrasonic transmitter used for scale prevention in boiler or heat exchanger is composed of the magnetostrictive material which transforms electric energy into ultrasonic wave and the horn which amplifies generated ultrasonic wave and transfers it into medium loaded. In this paper, we have performed the shape design for magnetostrictive material and analyzed a few type of horns which amplify generated ultrasonic wave and found each solution theoretically. Final length of the horn has been determined by measuring the sound pressure in medium between theoretical value and experience data. At last we have given the results of our study for the effects of ultrasonic wave irradiated by manufactured ultrasonic transmitter on preventing scale deposition on test pipe under the similar condition to boiler.
Keywords
boiler; heat transfer; ultrasonic; cavitation;
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