scholarly journals CATALYTIC GASIFICATION OF COAL USING EUTECTIC SALT MIXTURES

2001 ◽  
Author(s):  
Yaw D Yeboah ◽  
Yong Xu ◽  
Atul Sheth ◽  
Pradeep Agrawal
10.2172/2122 ◽  
1998 ◽  
Author(s):  
Atul Sheth ◽  
Pradeep Agrawal ◽  
Yaw D. Yeboah

Author(s):  
Pau Gimenez-Gavarrell ◽  
Sonia Fereres

Combining latent and sensible heat storage within a single material has lead researchers to propose off-eutectic salt mixtures for solar thermal energy storage. A binary salt mixture with an off-eutectic composition presents a melting temperature range as opposed to a melting point, providing additional storage capacity through the sensible heat present during the melting/solidification. However, some drawbacks of off-eutectic mixtures include a higher propensity towards incongruous melting, phase segregation of the mixture upon solidification, and thermal cycling issues. Here the solid-liquid transitions of a series of eutectic and off-eutectic KNO3-NaNO3 mixtures are evaluated to determine if the addition of nanoparticles can limit phase segregation yet still present good thermal properties. Measurements performed with a Differential Scanning Calorimeter show that the effect of nanoparticles is unimportant compared to the difference between eutectic and off-eutectic phase change behavior. Onset temperatures, latent heats, and the width of the phase transition temperature trace during melting/solidification are compared for the eutectic and off-eutectic salt mixtures with and without silica nanoparticles. A reduction in the latent heat is observed and explained through classical mixing theory. The modification of the phase change properties of eutectic and off-eutectic nanofluids are discussed.


1988 ◽  
Author(s):  
J W. Vanderhoff ◽  
M S. El-Aasser ◽  
T W. Hawkins
Keyword(s):  

2018 ◽  
Vol 174 ◽  
pp. 515-522 ◽  
Author(s):  
Ralf Raud ◽  
Stuart Bell ◽  
Kyla Adams ◽  
Rodrigo Lima ◽  
Geoffrey Will ◽  
...  

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