Теплообмін у плівкових градирнях з профільованою поверхнею зрошувачів в умовах поздовжнього та перехресного напрямку повітряного потоку
The search for possibilities to intensify the process of cooling of circulation water is of great practical interest because the degree of water cooling affects substantially the technoeconomic characteristics of the units of thermal and nuclear power plants as well as different industrial objects.A...
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| Date: | 2014 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
General Energy Institute of the National Academy of Sciences of Ukraine
2014
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| Subjects: | |
| Online Access: | https://systemre.org/index.php/journal/article/view/512 |
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| Journal Title: | System Research in Energy |
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System Research in Energy| Summary: | The search for possibilities to intensify the process of cooling of circulation water is of great practical interest because the degree of water cooling affects substantially the technoeconomic characteristics of the units of thermal and nuclear power plants as well as different industrial objects.As is known, the process of water cooling in cooling towers depends substantially on the intensity of air flow that blows over it. In film-type cooling towers, depending on the position of sprinklers with respect to air flow, the blow of surfaces with a liquid film can have different directions.The aim of the present work is to investigate heat transfer between water and air under conditions of the longitudinal and transverse (cross) interaction of the phases. Using our experimental facility, we have carried out the corresponding complex of investigations. We have found the values of heat transfer coefficient from water to air for different directions of air action and performed their comparison. We have established that the efficiency of water cooling under condition of the transverse air action is higher than in the case of counterflow.We have obtained dimensionless generalizing dependences for determining the intensity of heat transfer from water to air at water flow along profiled surfaces of sprinklers under conditions of longitudinal and cross interaction of the contacting phases. There relations can be used for calculation of the water temperature after cooling towers. |
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