Real operation of 2 kW class reverse-Brayton refrigeration system with using scroll compressor package

被引：0

作者：

Kim, Hyobong ^{[1
]}

Yeom, Hankil ^{[1
]}

Choo, Sangyoon ^{[1
]}

Kim, Jongwoo ^{[1
]}

Park, Jiho ^{[1
]}

In, Sehwan ^{[1
]}

Hong, Yong-Ju ^{[1
]}

Park, Seong-Je ^{[1
]}

Ko, Junseok ^{[1
]}

机构：

[1] Korea Inst Machinery & Mat, Daejeon, South Korea

来源：

PROGRESS IN SUPERCONDUCTIVITY AND CRYOGENICS | 2020年 / 22卷 / 04期

关键词：

reverse-Brayton cooling cycle; HTS device; LNG re-liquefaction; scroll compressor; turbo expander; cryogenic heat exchanger;

D O I：

10.9714/psac.2020.22.4.040

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper describes the real operation of 2 kW class reverse-Brayton refrigeration system with neon as a working fluid. The refrigeration cycle is designed with operating pressure of 0.5 and 1.0 MPa at low and high pressure side, respectively. Compressor package consists of several helium scroll compressors witch are originally used for driving GM cryocooler. Three segments of plate heat exchanger are adopted to cover the wide temperature range and the refrigeration power is produced by turbo expander. The developed refrigeration system is successfully operated at its target temperature of 77 K. In experiments, all parameters such as pressure, temperature, mass flow rate and valve opening are measured to investigate characteristics during cool-down process and normal state. The difference between design and real operation is discussed with measured experimental data. At normal state of 77 K operation, the developed reverse-Brayton refrigeration system shows 1.83 kW at 68.2 K of cold-end temperature.

引用

页码：40 / 44

页数：5