Performance measurements of superconducting current leads having low helium boiloff rates
Conference
·
OSTI ID:7144982
We have created a performance-measurement facility for current leads as a part of our Laboratory's program to develop applications for high-temperature superconductors. The facility measures the rate of helium vapor boil-off due to current-lead heat input to liquid helium and the pressure drop across a current lead for a pair of leads operating at currents to 100 A. The facility's major components are a liquid-helium dewar having low background heat input; a dewar insert which incorporates the current leads and associated instrumentation or connections for flow, pressure, level, temperature and voltage measurements; and a computer-driven data-acquisition system. The background beat input is small enough so that boiloff rates one-tenth that of an optimized conventional lead can be characterized. The facility has been operated with both conventional; i.e., vapor-cooled copper leads and with leads incorporating high-temperature superconductors at their cold ends. Details of the facility design, construction and operating experiences are presented.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 7144982
- Report Number(s):
- ANL/CP-75555; CONF-920802--4; ON: DE92040730
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320302* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOILING
CONTROL
COOLING
DATA ACQUISITION
ELEMENTS
FLUIDS
GASES
HELIUM
HIGH-TC SUPERCONDUCTORS
NONMETALS
PERFORMANCE
PHASE TRANSFORMATIONS
PRESSURE CONTROL
RARE GASES
REFRIGERATION
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
WIRES
320302* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOILING
CONTROL
COOLING
DATA ACQUISITION
ELEMENTS
FLUIDS
GASES
HELIUM
HIGH-TC SUPERCONDUCTORS
NONMETALS
PERFORMANCE
PHASE TRANSFORMATIONS
PRESSURE CONTROL
RARE GASES
REFRIGERATION
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
WIRES