Exergetic analysis of reverse Brayton cryocooler with different turbine arrangements for HTS power cables

被引：12
|
作者：
Dhillon, Aman Kumar [1 ]
Ghosh, Parthasarathi [1 ]
机构：
[1] Indian Inst Technol Kharagpur, Cryogen Engn Ctr, Kharagpur 721302, W Bengal, India
来源：
CRYOGENICS | 2021年 / 115卷
关键词：
Reverse Brayton; Modifications; Thermodynamic; Exergy; Power cable; REFRIGERATOR; DESIGN;
D O I：
10.1016/j.cryogenics.2021.103262
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The cooling systems of High-Temperature Superconducting (HTS) power transmission cables are unable to achieve the desired performance as prescribed in the cryogenic road map. Reverse Brayton cycle based Cryocooler (RBC) has been identified as a refrigerator that has the potential to achieve the desired performance for higher cooling load demand. In this article, an exergy analysis of the basic Reverse Brayton Cycle (RBC) and its modifications has been investigated for identification of appropriate cycle configuration that will meet the demand for practical applications of HTS cables. The modifications in the basic cycle are carried out with different arrangements of turbines such as parallel or series expansion that may increase the exergy efficiency of the cooling system with a heat load of 10 kW @ 65 K. The analysis is carried out using Aspen HYSYS V8.6, and helium is used as a working fluid. The effects of important process parameters such as pressure ratio, compressor inlet pressure, and flow diversion on the performance are investigated and are used to optimize these cycles. The best cycle configuration based on RBC is identified and recommended based on the results of the analysis.
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收藏
页数：14
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