Method of Heat Transfer in Contact Devices
Abstract: The article analyzes the existing methods for determining the heat transfer coefficient during convective heat exchange in contact-type devices with an intermediate heat carrier. It has been determined that at present the experimental determination of the heat transfer coefficient a is carried out, as a rule, not on the samples of thermal devices themselves, but on their simplified models, generalized using the thermal theory of similarity. In turn, similarity criteria are compiled on the basis of differential equations of convective heat transfer, i.e., equations that give an analytical relationship between the parameters characterizing the process of heat transfer in differential form. However, the analytical dependences obtained on the basis of empirical data complicate the prospect of complex modeling of the parameters characterizing the heat transfer processes, as well as the design characteristics of contact heat exchangers, including those with the use of an intermediate coolant, in order to increase their efficiency. It was revealed that the calculation of heat transfer in contact devices for the utilization of low-potential thermal emissions, along with the purification of gas emissions from various impurities, is usually carried out on the basis of experimental data.
Keywords: thermal efficiency, contact device, heat utilization, dimov gas, low-potential heat source, secondary energy resources.
Pages: 62-67.
For citation: Udovichenko, Z. V.; Savich, D. V. Method of Heat Transfer in Contact Devices. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2020. – Issue 2020-5(145) Engineering systems and technogenic safety. – Р. 62-67. – URL: https://donnasa.ru/publish_house/journals/vestnik/2020/2020-5(145)/st_10_udovichenko_savich.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2020-5 (145)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture