|Journal||Journal of Mechanical Engineering – Problemy Mashynobuduvannia|
|Publisher||A. Podgorny Institute for Mechanical Engineering Problems
National Academy of Science of Ukraine
|ISSN||0131-2928 (Print), 2411-0779 (Online)|
|Issue||Vol. 21, no. 4, 2018 (December)|
|Cited by||J. of Mech. Eng., 2018, vol. 21, no. 4, pp. 63-70|
Valerii V. Hanchyn, A. Podgorny Institute of Mechanical Engineering Problems of NASU (2/10, Pozharskyi Str., Kharkiv, 61046, Ukraine), ORCID: 0000-0001-9242-6460
Hydrogen as an environmentally friendly energy carrier is increasingly used in various sectors of the economy of industrialized countries, primarily to improve the environmental situation. Regardless of the field of application, metal hydride installations are energy conversion facilities, which is why the development of the scientific and technical principles of their creation is a new scientific direction of industrial heat and power engineering. The paper considers the peculiarities of the heat and mass exchange process in a hydrogen-metal system, which takes place in metal-hydride installations. A mathematical model of non-stationary heat and mass exchange processes in metal hydride complex-design devices is proposed. The results of the calculation and theoretical research performed by the authors about the prospects of using modern metal hydride technologies are presented. On the basis of the calculation and theoretical research, the influence of the accuracy of setting the heat transfer factor on the dynamics of hydrogen desorption is analyzed. The main factors that influence the choice of the geometric dimensions of a metal hydride element are identified. One of the peculiarities of the model is its versatility, which makes it possible to use it in modeling various types of energy-converting metal-hydride installations, as well as optimizing the design and operating modes of the designed metal-hydride systems. The introduction of the proposed technological solutions for creating metal hydride equipment opens up prospects of creating a wide range of specialized energy conversion installations, which will increase the level of utilizing secondary energy resources at different industrial enterprises, create real prerequisites for reducing thermal pollution of the environment and be an important step towards the implementation of Ukraine’s economic integration into the Pan-European system.
Keywords: energy conversion installations, heat and mass exchange processes, hydrogen, metal hydride, mathematical modeling.
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Received 27 June 2018
Published 30 December 2018