Thermal and electrical assessment of flexible

Weedy, B.M.; Rigby, S.J.

doi:10.1016/0011-2275(77)90022-4

Cited by 7 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thermal-hydraulic analysis of the counterflow cooled HTS cable is based on an energy balance of the cable system to determine the temperature distribution as described in [3] and [4]. For the HTS cable, a one-dimensional energy balance equation is developed for each of three control volumes, the annular fluid channel, the cable, and the former fluid channel as shown in FIGURE 2.…”

Section: Theoretical Basismentioning

confidence: 99%

“…Several studies of superconducting cable systems on the electric grid have been published providing approaches to analyze the thermal hydraulics in these systems [1][2][3][4][5][6]. In the counterflow cooling arrangement the liquid nitrogen flows through the HTS cable former, providing cooling to the terminations as well as the cable and returns in the annulus between the outside of the cable and the inner cryostat wall as illustrated in FIGURE 1.…”

Section: Introductionmentioning

confidence: 99%

“…The inter-stream thermal conductance is defined as the amount of heat transfer radially through a cable for a given temperature difference between the coolant streams. The literature dealing with the radial heat transfer in coaxial cables does not present experimental data for comparison with calculated cable temperature profiles [1,3,4]. So data is needed to benchmark any analysis of long length cable systems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of counterflow cooling using a test loop to simulate the thermal characteristics of a HTS cable system

Demko¹

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

The counterflow cooling configuration is a compact, efficient, and relatively low cost thermal management approach for long-length HTS cable systems. In the counter-flow cooling configuration the coolant flow, typically liquid nitrogen, is initially supplied through the center of the cable turning around at the far end of the cable and returning through the annular space between the cable and the inner cryostat wall, using a single cryostat. The temperature distributions along the cable and the nitrogen flow streams are extremely difficult to measure in an operating HTS cable because of the issues associated with installing thermometers on high voltage components. A 5-meter long test loop has been built that simulates a counter-flow cooled, HTS cable using a heated metal tube to simulate the cable. The test loop contains calibrated thermometers to measure the temperature distribution along the tube and the return liquid nitrogen stream. Measured temperature distributions in the return flow stream and along the tube wall for varying flow rates and heating conditions to simulate a HTS cable are presented and discussed.

show abstract

Section: Theoretical Basismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study of counterflow cooling using a test loop to simulate the thermal characteristics of a HTS cable system

Demko¹

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…The thermal-hydraulic analysis of the counterflow cooled HTS cable is based on an energy balance of the cable system to determine the temperature distribution as described in [3] and [4]. For the HTS cable, the one-dimensional energy balance equation can be written as:…”

Section: Theoretical Basismentioning

confidence: 99%

“…Several studies of superconducting cable systems on the electric grid have been published providing approaches to analyze the thermal hydraulics in these systems [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Experiments and Analysis of a Simulated HTS Cable

Demko¹,

Duckworth²,

Gouge³

et al. 2010

AIP Conference Proceedings

View full text Add to dashboard Cite

Long-length high temperature superconducting (HTS) cable projects, over 1 km, are being designed that are cooled by flowing liquid nitrogen. The compact counter-flow cooling arrangement which has the supply and return stream in a single cryostat offers several advantages including smallest space requirement, least heat load, and reduced cost since a return cryostat is not required. One issue in long length HTS cable systems is the magnitude of the heat transfer radially through the cable. It is extremely difficult to instrument an HTS cable in service on the grid with the needed thermometry because of the issues associated with installing thermometers on high voltage components. A 5-meter long test system has been built that simulates a counter-flow cooled, HTS cable using a heated tube to simulate the cable. Measurements of the temperatures in the flow stream and on the tube wall can be made and compared to analysis. These data can be used to benchmark different HTS cable heat transfer and fluid flow analysis approaches.

show abstract

A Study of Refrigeration for Liquid-Nitrogen-Cooled Power Transmission Cables

Longsworth

Schoch

1980

Advances in Cryogenic Engineering

View full text Add to dashboard Cite

Thermal and electrical assessment of flexible

Cited by 7 publications

References 5 publications

Experimental study of counterflow cooling using a test loop to simulate the thermal characteristics of a HTS cable system

Experimental study of counterflow cooling using a test loop to simulate the thermal characteristics of a HTS cable system

Heat Transfer Experiments and Analysis of a Simulated HTS Cable

A Study of Refrigeration for Liquid-Nitrogen-Cooled Power Transmission Cables

Contact Info

Product

Resources

About