Alfa Laval plate heat exchangers
- 作者: Sorokin S.S.1
-
隶属关系:
- Alfa Laval Potok
- 期: 卷 89, 编号 3 (2000)
- 页面: 17-18
- 栏目: Articles
- URL: https://ogarev-online.ru/0023-124X/article/view/105978
- DOI: https://doi.org/10.17816/RF105978
- ID: 105978
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The widespread use of plate heat exchangers as elements of refrigeration systems - evaporators, condensers - began during the energy crisis in 1976. By this period, as a result of laboratory studies carried out by Alfa Laval, correlation relationships were obtained that made it possible to reliably describe heat transfer and hydraulic characteristics of a two-phase flow in the channels of the heat exchanger. Already in 1984, plate heat exchangers began to be used in heat pumps and refrigeration systems.
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1.
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Rice. 1. Comparative dimensions of plate and shell-and-tube evaporator
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Rice. 2. Design variant of the semi-welded plate heat exchanger
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Rice. Fig. 3. Dependence of the water temperature at the outlet of the evaporator near the freezing point with a decrease in the boiling point °C: 1 - water temperature at the inlet; 2 - outlet water temperature: 3 - boiling point; thermal load on the evaporator
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Rice. 4. Charging ammonia into a shell-and-tube evaporator
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Rice. 5. Charging ammonia into the plant with plate evaporator and a capacitor; a - supply of refrigerant of the "thermosiphon" type; b - supply of refrigerant of the "direct expansion" type (TRV at the inlet to the evaporator)
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