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Research Papers: Heat and Mass Transfer

Experimental Study on Construction of a Newly Supersonic Oven With Liquid Lithium

[+] Author and Article Information
Chuanfu Huang

College of Physical Science and Technology,
China University of Mining and Technology,
Xuzhou 221116, Jiangsu, China
e-mail: chuanfuh@cumt.edu.cn

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received September 11, 2017; final manuscript received April 12, 2018; published online May 25, 2018. Assoc. Editor: Ali Khounsary.

J. Heat Transfer 140(9), 092003 (May 25, 2018) (4 pages) Paper No: HT-17-1535; doi: 10.1115/1.4040084 History: Received September 11, 2017; Revised April 12, 2018

The seeded supersonic oven originally used to produce sodium clusters was incapable for lithium clusters that should be produced at higher temperatures. Ultimately, we designed a new compact stainless steel (SS) oven with thicker walls and constructed two molybdenum alloy (TZM) heaters for this new oven. The newly designed SS oven and heaters have been tested with liquid lithium, and the tested results demonstrated they can successfully work at ∼1000 °C, and a deposition layer of lithium was observed.

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References

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Figures

Grahic Jump Location
Fig. 1

(a) shows the drawing of the old SS oven (old oven) was originally designed for sodium clusters and we redrew it for comparison. (b) indicates the design of the newly SS oven (new oven), which can work successfully at high temperature with the new TZM heaters.

Grahic Jump Location
Fig. 2

(a) shows the home built heater was used for the old SS oven. (b) is the picture of the new TZM heater, we can see all the wires were protected without exposure.

Grahic Jump Location
Fig. 3

The heaters were built according to the instructions in the drawing. The ceramic rods 1 and 2 are used for the lead wires, keeping an appropriate distance to avoid “hot spots.” In order to increase the thickness of the lead wires to reduce its resistance, additional wires in the ceramic rods 3 and 4 were added.

Grahic Jump Location
Fig. 4

Picture (a) was taken after we dissembled the source that worked at 1050 °C for about 24 h, and in principle, those lithium particles should be clean without contamination after ejected from the nozzle. Two days later, picture (b) was taken and suggested the lithium particles form an oxidized layer due to reaction with water and oxygen of air, and the watermark was from reaction between the white layer and water.

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