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| Experimental Research on Steam Condensation and Heat Transfer of Multi-channel Cylinder Dryer with Rectangular Section in Rotation State |
| Received:March 28, 2021 |
| DOI：10.11980/j.issn.0254-508X.2021.09.009 |
| Key Words:multi-channel cylinder dryer condensation heat transfer pressure drop rotation |
| Fund Project:国家自然科学基金（51375286）；陕西省教育厅服务地方专项项目（19JC004）。 |
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| Abstract:A rectangular channel with an aspect ratio of 1∶3 was used as the research object， and the effects of rotation speed and cooling water mass flow rate on steam condensation heat transfer and flow pressure drop in the channel were studied. The results showed that when the rotation speed was constant， the average heat transfer coefficient of the channel increased with the increase of the cooling water mass flow rate， and the flow pressure drop of the channel gradually decreased and tended to be stable with the increase of the cooling water mass flow rate. When the mass flow rate of cooling water was constant， the average heat transfer coefficient of the channel increased first and then decreased with the increase of rotation speed. When the rotation speed was in the range of 50~100 r/min， the flow pressure drop of the channel decreased slowly with the increase of rotation speed， and the average heat transfer coefficient reached the maximum at rotation speed of 70 r/min. |
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