Dynamics of a Closed-Loop Thermosyphon Incorporating Thermal Storage
The coupling between a natural-convection thermosyphon loop and a thermal storage device is analyzed numerically for a charging process in which energy is added to the system at a fixed rate. Since energy accumulates in the storage component, the driving buoyant force is continually altered and the behavior is inherently transient. The undesirable consequence is a less than uniform charge of the storage volume. Relevant dimensionless parameters are identified which enable improvement in the shape of the charge profile. The results indicate that a more uniform charge profile is obtained by targeting the frictional losses to a flow regime most strongly proportional to flow rate and by decreasing the relative vertical height over which heat input occurs.
K. Homan and K. S. Benne, "Dynamics of a Closed-Loop Thermosyphon Incorporating Thermal Storage," Numerical Heat Transfer, Part A, Taylor & Francis, Jan 2008.
The definitive version is available at https://doi.org/10.1080/10407780802084553
Mechanical and Aerospace Engineering
Keywords and Phrases
Buoyancy; Capillary Flow; Electric Charge; Fluid Mechanics; Heat Storage; Lithium Batteries; Siphons; Storage (Materials)
Article - Journal
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