ВИЗНАЧЕННЯ ЕФЕКТИВНОСТІ ТЕПЛОВІДДАЧІ В УМОВАХ ВИМУШЕНОЇ КОНВЕКЦІЇ ВІД ТРУБ ЗІ СПЕЦІАЛЬНИМ ОРЕБРЕННЯМ

• Datum: 2021
• Hauptverfasser: Kostyk, S.І., Shybetskyi, V.Yu., Plashykhin, S.V., Bykoriz, Y.О.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: Institute of Engineering Thermophysics of NAS of Ukraine 2021
• Online Zugang: https://ihe.nas.gov.ua/index.php/journal/article/view/438
• Назва журналу: Thermophysics and Thermal Power Engineering

Today, heat transfer processes are present in almost all technological processes of various industries. In heat exchange processes, shell-and-tube heat exchangers are quite effective and easy to manufacture, as the long-term practice of using these devices has shown. Therefore, intensification of heat transfer processes, improvement and development of appropriate equipment is a very urgent task. The object of research is a heat-exchange element with special finning on heat-exchange tubes. The subject of research is the heat transfer processes implemented in a heat exchange element with special finning. The aim of the study is to determine the efficiency of heat transfer of the finned surface of the heat exchange element under conditions of forced convection and to evaluate its efficiency by means of experimental and computer research. This article presents a computer simulation that allows to adequately assess the efficiency of using various designs of finning elements of heat exchange equipment. This is confirmed by the convergence of the experimental data and the results of computer simulation (the discrepancy between the results of the experiment and computer simulation does not exceed 5 %). Experimental and computer studies have shown that the proposed technical solution is more effective than standard ones and can be used in the design of new equipment or improvement of the existing one.