30Jun 2025

TUBULAR GAS HEATERS FOR FREE VOLUME WATER HEATING AS AN ALTERNATIVE TO HOT WATER BOILERS

  • Collective Research and Production Enterprise Energo Complex, Dnipro, Ukraine.
  • Department of Heating, Ventilation, Air Conditioning, Heat and Gas Supply, Ukrainian State University of Science and Technologies, ESI Prydniprovska State Academy of Civil Engineering and Architecture, Dnipro, Ukraine.
  • Department of Information Technologies, Dnipro Technological University Step, Dnipro, Ukraine.
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The mathematical model of a tubular gas heater in an open volume has the form of a hydraulic circuit with adjustable parameters in the form of ordinary nonlinear differential equations. Two criteria the criterion of thermal efficiency and the criterion of material intensity of the heater are allocated for setting the problem. For the solution of the problem of optimal design of tubular heater the binary relation of selection of the most preferable solutions is constructed, and the search of the solution is carried out by means of the algorithm of evolutionary search with several branches of evolutionary search of the concept. The convergence of the design optimization algorithm to the desired solution with probability 1 on all branches of solution evolution is shown. Numerical solutions of the optimization problem have shown that it is possible to achieve sufficiently high thermal efficiency of the heater at moderate material intensity. It is shown that wood pellets can be effectively used as fuel for tubular gas heaters when heating water in free volume. An example of practical use of tubular gas heaters for heating water with a thermal power of 400 kW in a bath with a free surface is given.

[Kostiantyn Dudkin, Halyna Prokofieva, Vyacheslav Irodov, Oksana Yaroshevska, Leonid Panik, Leontina Solod and Valeria Tkachova (2025); TUBULAR GAS HEATERS FOR FREE VOLUME WATER HEATING AS AN ALTERNATIVE TO HOT WATER BOILERS Int. J. of Adv. Res. (Jun). 907-914] (ISSN 2320-5407). www.journalijar.com

PROKOFIEVA HALYNA
Associate Professor, DEPARTMENT OF HEATING, VENTILATION, AIR CONDITIONING, HEAT AND GAS SUPPLY, PRYDNIPROVSKA STATE ACADEMY OF CIVIL ENGINEERING AND ARCHITECTURE, DNIPRO, UKRAINE
Ukraine

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