Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains
To solve the problem of increasing the efficiency of operation of thermal networks, placed in impassable channels, the authors previously proposed the scheme-and-structural decision of the regenerative-utilization heat consumption. The technology of forced ventilation of the channel by external foll...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Belarusian National Technical University
2019-02-01
|
| Series: | Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика |
| Subjects: | |
| Online Access: | https://energy.bntu.by/jour/article/view/1425 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832543751311982592 |
|---|---|
| author | V. A. Sednin T. V. Bubyr |
| author_facet | V. A. Sednin T. V. Bubyr |
| author_sort | V. A. Sednin |
| collection | DOAJ |
| description | To solve the problem of increasing the efficiency of operation of thermal networks, placed in impassable channels, the authors previously proposed the scheme-and-structural decision of the regenerative-utilization heat consumption. The technology of forced ventilation of the channel by external followed by the cooling of air and utilization of the withdrawn heat is presented. Research of processes of heat exchange between a stream of air and pipelines of network water on the one hand and between a stream of air and walls of the channel on another hand is a determinant for realization of the presented technology of increase of efficiency of operation of the considered heating mains. Convective heat transfer with the listed components of the channel structure is quite difficult to reduce to any canonical form which makes it possible to use the available design dependences. It is immeasurably more difficult to find a solution when considering the processes of forced convection jointly. Heat exchange takes place in a channel of complex shape that is determined by the presence of supports, compensators and turns along the length of the channel. In the cross section, the sizes of the structure and the restriction of the air flow are determined by a standard size range of diameters of the network water pipelines. Under these conditions, the use of any real experimental facility is associated with unacceptable idealization and the corresponding error, unsuitable for practical use. Full-scale tests can be considered only to verify the adequacy of the experimental results. The way out of this situation can be a usage of a virtual experimental facility created on the basis of a standard software package (in the case under consideration the ANSYS was used). The approaches of creating a virtual experimental facility for the study of heat transfer and aerodynamics in the blown impassable channels of heating mains and methods of conducting experiment using the theory of its planning are considered. |
| format | Article |
| id | doaj-art-03a48bd1d48749d2b796281c5729cfdd |
| institution | Kabale University |
| issn | 1029-7448 2414-0341 |
| language | Russian |
| publishDate | 2019-02-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика |
| spelling | doaj-art-03a48bd1d48749d2b796281c5729cfdd2025-02-03T11:34:16ZrusBelarusian National Technical UniversityИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика1029-74482414-03412019-02-01621617610.21122/1029-7448-2019-62-1-61-761363Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating MainsV. A. Sednin0T. V. Bubyr1Belarusian National Technical UniversityBelarusian National Technical UniversityTo solve the problem of increasing the efficiency of operation of thermal networks, placed in impassable channels, the authors previously proposed the scheme-and-structural decision of the regenerative-utilization heat consumption. The technology of forced ventilation of the channel by external followed by the cooling of air and utilization of the withdrawn heat is presented. Research of processes of heat exchange between a stream of air and pipelines of network water on the one hand and between a stream of air and walls of the channel on another hand is a determinant for realization of the presented technology of increase of efficiency of operation of the considered heating mains. Convective heat transfer with the listed components of the channel structure is quite difficult to reduce to any canonical form which makes it possible to use the available design dependences. It is immeasurably more difficult to find a solution when considering the processes of forced convection jointly. Heat exchange takes place in a channel of complex shape that is determined by the presence of supports, compensators and turns along the length of the channel. In the cross section, the sizes of the structure and the restriction of the air flow are determined by a standard size range of diameters of the network water pipelines. Under these conditions, the use of any real experimental facility is associated with unacceptable idealization and the corresponding error, unsuitable for practical use. Full-scale tests can be considered only to verify the adequacy of the experimental results. The way out of this situation can be a usage of a virtual experimental facility created on the basis of a standard software package (in the case under consideration the ANSYS was used). The approaches of creating a virtual experimental facility for the study of heat transfer and aerodynamics in the blown impassable channels of heating mains and methods of conducting experiment using the theory of its planning are considered.https://energy.bntu.by/jour/article/view/1425blown impassable channelsconvective heat transferheating mainvirtual experimental facilityansys |
| spellingShingle | V. A. Sednin T. V. Bubyr Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика blown impassable channels convective heat transfer heating main virtual experimental facility ansys |
| title | Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains |
| title_full | Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains |
| title_fullStr | Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains |
| title_full_unstemmed | Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains |
| title_short | Numerical Study of Complex Heat Transfer in Blown Impassable Channels of Heating Mains |
| title_sort | numerical study of complex heat transfer in blown impassable channels of heating mains |
| topic | blown impassable channels convective heat transfer heating main virtual experimental facility ansys |
| url | https://energy.bntu.by/jour/article/view/1425 |
| work_keys_str_mv | AT vasednin numericalstudyofcomplexheattransferinblownimpassablechannelsofheatingmains AT tvbubyr numericalstudyofcomplexheattransferinblownimpassablechannelsofheatingmains |