Zhun Georgy Grigoryevich

Zhun Georgy Grigoryevich is Professor, Doctor of Engineering Sciences, Professor of the Department of Technical Cryophysics of National Technical University «Kharkiv Polytechnic Institute», Academician of the Ukrainian Branch of the International Academy of Colds.

Graduated from the Odessa Institute of Food and Refrigeration Industry (now— the Odessa National Academy of Food Technologies) (1959). Began his career at the Ukrainian Research Institute of Food Industry (Kharkiv).

Was engaged in the development of high-capacity isothermal tanks for transportation of liquid CO2 at low pressure in the supercooled state. Has established high fire extinguishing and insulating properties of the aerosol formed by throttling supercooled CO2.

Initiated the creation of the Research Department No. 1 (Kharkiv) in the system of the Ukrainian Fire Safety Research Institute of the Ministry of Internal Affairs of Ukraine. Here Georgy Grigoryevich worked as a research scientist (part-time) for development and implementation CO2-aerosol systems to prevent and protect grain and combination fodder elevators against fires.

Georgy Grigoryevich took up employment with Kharkiv Physics and Technical Institute for Low Temperatures (PTILT) of the National Academy of Sciences of Ukraine. (now — B. Vierkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine). From 1962 to1964, according to the Space Exploration Program, he was assigned to work at the Center for Remote Space Communication (not far from Yevpatoriia) responsible for the operation of a cryogenic quantum receiver-amplifier of spacecrafts’ weak signals.

After that he completed post-graduate course at Kharkiv Physics and Technical Institute for Low Temperatures (PTILT). In his Ph.D. (Physical and Mathematical sciences) Georgy Grigoryevich has developed an effective method of emitting deuterium from hydrogen, and also found that the used ortho-para-conversion reaction of H2 modifications can be used as a model for quickly choosing the best adsorbent-catalysts for effective hydrogen isotopes adsorptive separation, and also the implementation of various chemical processes (for example: hydrogenation of hydrocarbons, alkylation, and others).

Being a well-known cryogenics specialist, Georgy Grigoryevich was invited to the newly created Department of Technical Cryophysics at National Technical University «Kharkiv Polytechnic Institute» (1979). G. G. Zhun substantiated the expediency of studying many new courses by students, to ones he prepared lecture notes and gave lectures, developed laboratory work and organized industry internship for training qualified specialists in the field of cryogenic engineering.

In addition to educational and methodical work, Georgy Grigoryevich was engaged in the development of new energy-saving thermal protection for industrial cryovessels and cryovacuum devices and other cryogenic equipment. His researches have made it ever possible to develop the calculation method and cryovessels accelerated insulation technology by heat-shielding layers of screen-vacuum thermal insulation (SVTI) with low thermal conductivity, close to the theoretical one. The developed technology was put into production of 6 types of new cryobiological industrial-type Dewar vessels at Kharkiv Transport Equipment Plant.The economic benefits of more than 700000 rubles were obtained from this introduction. (at 1990 prices), and Professor G. G. Zhun was awarded a diploma of the exhibition «Mechanical Engineering of the Kharkiv Region».

His studies in the field of cryogenic thermal protection and cryovacuum processes are known to the world scientific community, that's why he was invited to analyze characteristics for thermal insulation and cryovacuum structures at the nuclear fusion reactor which is being built in France by 32 countries of the world (without Ukraine) under the International project ITER. As a result of the comparative analysis, he came to conclusions about the lack of effectiveness of structures and technologies used in the nuclear fusion reactor, and prepared recommendations for their optimization.

Professor G. G. Zhun is the author of more than 100 scientific publications in domestic and foreign editions, reports at 17 international and national scientific conferences.

At present the scientist is actively involved in the development and implementation of new composite gasket insulating materials.