Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty
Analysis of the evaporator of the absorption refrigerating secondary condensation unit of ammonia production was performed. The need to minimize the temperature mode of operation of the evaporator, which provides for energy efficiency in ammonia production by decreasing natural gas consumption was s...
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doaj-fe01166f7d1644f6804490c780a9a8182020-11-24T21:57:28ZengPC Technology CenterEastern-European Journal of Enterprise Technologies1729-37741729-40612018-01-0112 (91)212910.15587/1729-4061.2018.121711121711Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertaintyAnatoliy Babichenko0Juliya Babichenko1Yana Kravchenko2Svitlana Velma3Igor Krasnikov4Ihor Lysachenko5National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002Ukrainian State University of Railway Transport Feierbakha sq., 7, Kharkiv, Ukraine, 61050National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002National University of Pharmacy Pushkinska str., 53, Kharkiv, Ukraine, 61002National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002Analysis of the evaporator of the absorption refrigerating secondary condensation unit of ammonia production was performed. The need to minimize the temperature mode of operation of the evaporator, which provides for energy efficiency in ammonia production by decreasing natural gas consumption was substantiated. Statistical processing of experimental data with assessment of the quality of obtained information was performed. Identification of the heat exchange process of the evaporator was performed and the equation for numerical evaluation of uncertainty of coefficients of thermal efficiency, heat transfer and condensation thermal resistance was obtained. According to the results of statistical modeling of the primary condensation unit, the equation for numerical evaluation of uncertainty of ammonia concentration in circulating gas at the evaporator inlet. The authors proved the possibility of its application for identification and mathematical modeling of heat exchange process at existing relationship of ammonia concentration in the circulating gas at the evaporator inlet and condensation thermal resistance. Algorithmic support of numerical evaluation of uncertainties and calculation of target indicators of the evaporator’s efficiency was created. The technical structure of the automated system for identification and timely obtaining of the mathematical model of the evaporator, which is adapted to the existing information system of the industrial ammonia synthesis unit, was developed.http://journals.uran.ua/eejet/article/view/121711ammonia productionsecondary condensationmathematical modeling of heat exchange processesautomated system |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anatoliy Babichenko Juliya Babichenko Yana Kravchenko Svitlana Velma Igor Krasnikov Ihor Lysachenko |
spellingShingle |
Anatoliy Babichenko Juliya Babichenko Yana Kravchenko Svitlana Velma Igor Krasnikov Ihor Lysachenko Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty Eastern-European Journal of Enterprise Technologies ammonia production secondary condensation mathematical modeling of heat exchange processes automated system |
author_facet |
Anatoliy Babichenko Juliya Babichenko Yana Kravchenko Svitlana Velma Igor Krasnikov Ihor Lysachenko |
author_sort |
Anatoliy Babichenko |
title |
Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
title_short |
Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
title_full |
Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
title_fullStr |
Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
title_full_unstemmed |
Identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
title_sort |
identification of heat exchange process in the evaporators of absorption refrigerating units under conditions of uncertainty |
publisher |
PC Technology Center |
series |
Eastern-European Journal of Enterprise Technologies |
issn |
1729-3774 1729-4061 |
publishDate |
2018-01-01 |
description |
Analysis of the evaporator of the absorption refrigerating secondary condensation unit of ammonia production was performed. The need to minimize the temperature mode of operation of the evaporator, which provides for energy efficiency in ammonia production by decreasing natural gas consumption was substantiated. Statistical processing of experimental data with assessment of the quality of obtained information was performed. Identification of the heat exchange process of the evaporator was performed and the equation for numerical evaluation of uncertainty of coefficients of thermal efficiency, heat transfer and condensation thermal resistance was obtained. According to the results of statistical modeling of the primary condensation unit, the equation for numerical evaluation of uncertainty of ammonia concentration in circulating gas at the evaporator inlet. The authors proved the possibility of its application for identification and mathematical modeling of heat exchange process at existing relationship of ammonia concentration in the circulating gas at the evaporator inlet and condensation thermal resistance. Algorithmic support of numerical evaluation of uncertainties and calculation of target indicators of the evaporator’s efficiency was created. The technical structure of the automated system for identification and timely obtaining of the mathematical model of the evaporator, which is adapted to the existing information system of the industrial ammonia synthesis unit, was developed. |
topic |
ammonia production secondary condensation mathematical modeling of heat exchange processes automated system |
url |
http://journals.uran.ua/eejet/article/view/121711 |
work_keys_str_mv |
AT anatoliybabichenko identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty AT juliyababichenko identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty AT yanakravchenko identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty AT svitlanavelma identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty AT igorkrasnikov identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty AT ihorlysachenko identificationofheatexchangeprocessintheevaporatorsofabsorptionrefrigeratingunitsunderconditionsofuncertainty |
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