| 摘要 |
A method for detecting capacity changes in a fluid in a flow channel is disclosed. The method includes the steps of leading the fluid to a surface of a defined area, where the heat transfer is enhanced compared with other portions of the flow channel, measuring the temperature of the fluid, heating the surface, recording the power which is supplied during heating the surface, measuring the temperature of the heated surface, determining the heat transfer coefficient of the fluid, and comparing the determined heat transfer coefficient with a reference. Moreover, a device for performing the method and a turbine are provided.
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