Investigation of solid nitrogen for cryogenic thermal storage in superconducting cable terminations for enhanced resiliency
| Autor: | Zhenyu Zhang, Juan C. Ordonez, T Nes, Nick G. Suttell, Sastry Pamidi, J Kweon, Chul H. Kim |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Superconductivity
Materials science Nuclear engineering chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Thermal energy storage 01 natural sciences Heat capacity Solid nitrogen Adsorption Volume (thermodynamics) chemistry Boiling 0103 physical sciences 010306 general physics 0210 nano-technology Helium |
| Zdroj: | IOP Conference Series: Materials Science and Engineering. 278:012019 |
| ISSN: | 1757-899X 1757-8981 |
| DOI: | 10.1088/1757-899x/278/1/012019 |
| Popis: | Low heat capacity of helium makes the helium gas cooled high temperature superconducting (HTS) power devices susceptible to large temperature rises during unexpected heat loads such as electrical faults or cryogenic system failures. Cryogenic thermal storage in the form of solid nitrogen designed in the terminations is explored as a means to increase the thermal stability and operational time of HTS power cables in the event of unexpected heat loads. An external tank containing activated charcoal is used as an adsorption buffer tank for nitrogen gas. The use of activated charcoal minimizes the volume of the buffer tank and prevents pressure rises during melting and boiling of the solid nitrogen. Calculations of the cryogenic thermal storage needed and a description of the experimental setup used to understand the design constraints are discussed. |
| Databáze: | OpenAIRE |
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