Research of variable characteristics of heat exchange equipment
Heat exchangers used in various industries, most often work in conditions of variable flows and temperatures. At the same time, the existing theories of calculation of heat exchanger modes are based on the use of constant dimensionless parameters in any mode of operation. The purpose of this work is...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2019-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/40/e3sconf_esr2019_07001.pdf |
| _version_ | 1818368248109858816 |
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| author | Rafalskaya Tatyana Rudyak Valery |
| author_facet | Rafalskaya Tatyana Rudyak Valery |
| author_sort | Rafalskaya Tatyana |
| collection | DOAJ |
| description | Heat exchangers used in various industries, most often work in conditions of variable flows and temperatures. At the same time, the existing theories of calculation of heat exchanger modes are based on the use of constant dimensionless parameters in any mode of operation. The purpose of this work is to obtain dependencies to determine the effect of coolant temperatures on the variable parameter of the heat exchanger. Using the simulation method, dependencies were found that describe the change in the heat exchanger parameter which made it possible to obtain a general formula for the change in the heat exchanger parameter at varying coolant temperatures. To test the applicability of the existing relations describing the change in the heat exchanger parameter and the formula obtained, a large number of heat exchangers were calculated in variable operating modes. Comparison with the simulation results showed that the ratios of the known theories of heat exchangers do not work in all modes and their application can lead to significant errors. A formula has been obtained allows one to find the effect of coolant temperatures on the variable parameter of the heat exchanger. The formula can be used to predict the modes of large systems. |
| first_indexed | 2024-12-13T23:04:55Z |
| format | Article |
| id | doaj.art-2370219968c340b9a9562e9ba3f47c36 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-13T23:04:55Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-2370219968c340b9a9562e9ba3f47c362022-12-21T23:28:18ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011140700110.1051/e3sconf/201911407001e3sconf_esr2019_07001Research of variable characteristics of heat exchange equipmentRafalskaya Tatyana0Rudyak ValeryNovosibirsk State University of Architecture and Civil Engineering (Sibstrin)Heat exchangers used in various industries, most often work in conditions of variable flows and temperatures. At the same time, the existing theories of calculation of heat exchanger modes are based on the use of constant dimensionless parameters in any mode of operation. The purpose of this work is to obtain dependencies to determine the effect of coolant temperatures on the variable parameter of the heat exchanger. Using the simulation method, dependencies were found that describe the change in the heat exchanger parameter which made it possible to obtain a general formula for the change in the heat exchanger parameter at varying coolant temperatures. To test the applicability of the existing relations describing the change in the heat exchanger parameter and the formula obtained, a large number of heat exchangers were calculated in variable operating modes. Comparison with the simulation results showed that the ratios of the known theories of heat exchangers do not work in all modes and their application can lead to significant errors. A formula has been obtained allows one to find the effect of coolant temperatures on the variable parameter of the heat exchanger. The formula can be used to predict the modes of large systems.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/40/e3sconf_esr2019_07001.pdf |
| spellingShingle | Rafalskaya Tatyana Rudyak Valery Research of variable characteristics of heat exchange equipment E3S Web of Conferences |
| title | Research of variable characteristics of heat exchange equipment |
| title_full | Research of variable characteristics of heat exchange equipment |
| title_fullStr | Research of variable characteristics of heat exchange equipment |
| title_full_unstemmed | Research of variable characteristics of heat exchange equipment |
| title_short | Research of variable characteristics of heat exchange equipment |
| title_sort | research of variable characteristics of heat exchange equipment |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/40/e3sconf_esr2019_07001.pdf |
| work_keys_str_mv | AT rafalskayatatyana researchofvariablecharacteristicsofheatexchangeequipment AT rudyakvalery researchofvariablecharacteristicsofheatexchangeequipment |