Experimental Research of Heterogeneous Nuclei in Superheated Steam
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00235254" target="_blank" >RIV/68407700:21220/15:00235254 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Experimental Research of Heterogeneous Nuclei in Superheated Steam
Original language description
A mobile steam expansion chamber has been developed to investigate experimentally homogeneous and heterogeneous nucleation processes in steam, both in the laboratory and at power plants using the steam withdrawn from the steam turbine. The purpose of thedevice is to provide a new insight into the physics of non-equilibrium wet steam formation, which is one of the factors limiting the efficiency and reliability of steam turbines. The expanded steam or a mixture of steam with a non-condensable gas is rapidly expanded in the expansion chamber. Due to adiabatic cooling, temperature drops below the dew point of the steam at a given pressure. When reaching a sufficiently high supersaturation, droplets are nucleated. By tuning the supersaturation in the so-called nucleation pulse, particles of various size ranges can be activated. This fact is used in the present study to measure the aerosol particles present in the air. Homogeneous nucleation was negligible in this case. The experiment demo
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BJ - Thermodynamics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP101%2F11%2F1593" target="_blank" >GAP101/11/1593: Investigation of non-equilibrium steam condensation: A new approach</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů