New Working Fluids for the Use of Heat Secondary Sources in Mining Technologies
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
ENG: Production cost of mining enterprises can be significantly reduced when using secondary heat. A large volume of secondary heat sources has a temperature potential of no higher than 50ºС. To generate additional electricity using secondary heat it has been proposed to use installations with the Rankine thermodynamic cycle in mining enterprises. The paper aim is to study the thermodynamic efficiency of using R-1234yf and R-744 in the equipment, which uses the secondary heat of mining technologies for evaporation of these working fluids. R-1234yf is a freon that belongs to the class of hydrofluoroolefins and has a much lower level of global warming potential than other ozone-depleting substances. R-744 is carbon dioxide, which belongs to a natural, non-toxic and non-flammable working substance. It has been determined that the thermodynamic efficiencies of using R-1234yf and R-744 are 10% and 6.3%, respectively. The thermodynamic efficiency has been calculated for the temperature range from 50º to 20ºC, which is typical for a large volume of secondary heat sources in mining technologies.
Description
O. Gupalo: ORCID 0000-0003-3145-9220
Keywords
production cost, secondary heat, Rankine thermodynamic cycle, thermodynamic efficiency, R-1234yf, R-744, КЕТтаОП
Citation
Kirsanov M., Gupalo O., Podoliak K. New Working Fluids for the Use of Heat Secondary Sources in Mining Technologies. IOP Conference Series: Earth and Environmental Science. 2023. Vol. 1156 : Proc. of the IV Intern. Conf. "Essays of Mining Science and Practice", RMGET-2022 (Ukraine, Dnipro, 09/11/2022–11/11/2022, 2022). 012028. DOI: 10.1088/1755-1315/1156/1/012028.