scholarly journals Little Big El-Mo

2001 ◽  
Vol 123 (10) ◽  
pp. 52-55 ◽  
Author(s):  
Paul Sharke
Keyword(s):  
High Temperature ◽  
Assembly Line ◽  
Naval Research ◽  
New Techniques ◽  
Ship Propulsion ◽  
High Temperature Superconducting ◽  
Superconducting Motor ◽  
Office Of Naval Research ◽  
The Us ◽  
The Many

This article reviews the arrival of commercial high-temperature superconducting (HTS) motors in the market. American Superconductor is concentrating its motor efforts on ship propulsion. The company has a contract with the US Navy’s Office of Naval Research to design and develop propulsion motors up to 33,500 hp. The big advantage of a superconducting motor aboard a ship is its small size, which frees up valuable square footage in the hull for the many other components needed in battle. Because superconducting motors will be about half the weight of their conventional counterparts, the efficiencies an assembly line brings to manufacturing suddenly open for many of them. Lighter, smaller designs also will translate to time saved in testing. Many of the technologies used in the 200-hp machine transferred to the 1000-hp unit, and many new techniques developed as well.

Loss Analysis of a 3-MW High-Temperature Superconducting Ship Propulsion Motor

2018 ◽  
Vol 28 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Toshiyuki Yanamoto ◽  
Mitsuru Izumi ◽  
Youhei Murase ◽  
Tamami Oryu
Keyword(s):  
High Temperature ◽  
Ship Propulsion ◽  
High Temperature Superconducting ◽  
Loss Analysis

High-Temperature Superconducting Motor Using Y-Ba-Cu-O Bulk Magnets

1995 ◽  
Vol 34 (Part 1, No. 10) ◽  
pp. 5574-5578 ◽  
Author(s):  
Yoshitaka Itoh ◽  
Yousuke Yanagi ◽  
Masaaki Yoshikawa ◽  
Tetsuo Oka ◽  
Shintaro Harada ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconducting ◽  
Superconducting Motor

CHARACTERISTICS OF MOLTEN SALTS AND RECOMMENDATIONS FOR USE IN SOLAR POWER STATIONS

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Samaan G. Ladkany ◽  
William G. Culbreth ◽  
Nathan Loyd
Keyword(s):  
Molten Salt ◽  
Molten Salts ◽  
Solar Power ◽  
Weather Conditions ◽  
Thermal Capacity ◽  
Naval Research ◽  
Power Stations ◽  
Office Of Naval Research ◽  
The Us ◽  
Efficient Type

Molten salts (MS) in the 580°C range could be used to store excess energy from solar power stations and possibly from nuclear or coal. The energy can be stored up to a week in large containers at elevated temperature to generate eight hours of electricity to be used at night or during peak demand hours. This helps to reduce the fluctuation experienced at thermal solar power stations due to weather conditions. Our research supported by Office of Naval Research (ONR), presents a survey of salts to be used in molten salt technology. The physical characteristics of these salts such as density, melting temperature, viscosity, electric conductivity, surface tension, thermal capacity and cost are discussed. Cost is extremely important given the large volumes of salt required for energy storage at a commercial power station. Formulas are presented showing the amount of salt needed per required megawatts of stored energy depending on the type of salt. The estimated cost and the size of tanks required and the operating temperatures are presented. Recommendations are made regarding the most efficient type of molten salt to use. Commercial thermal solar power stations have been constructed in the US and overseas mainly in Spain for which molten salt is being considered. A field of flat mirrors together with collection towers are used in some designs and parabolic troughs used in others.

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