Characterization of a 100 Hz Miniature Pulse Tube Cooler Driven by a Linear Compressor
Abstract
Pulse tube coolers driven by linear compressors usually operate between 30 Hz and 60 Hz. A higher frequency could lead to a higher specific power. This article presents a miniature pulse tube cooler with a working frequency at 100 Hz. Due to an impedance mismatch between the cooler and the compressor, the overall system efficiency is not good. The theoretical model considering the compressor and pulse tube cooler is described. Influences of various parameters, including frequency and inertance tube length, have been investigated both experimentally and analytically. A no-load temperature of 59.6 K was achieved with a mean pressure of 3.55 Mpa, a pressure ratio of 1.23 and a frequency of 100 Hz. The cooling power at 80 K was 0.8 W.
- Publication:
-
Transactions of the Cryogenic Engineering Conference - CEC: Advances in Cryogenic Engineering
- Pub Date:
- April 2010
- DOI:
- 10.1063/1.3422352
- Bibcode:
- 2010AIPC.1218..183W
- Keywords:
-
- cryogenics;
- compressors;
- acoustic impedance;
- pressure transducers;
- 07.20.Mc;
- 84.30.Qi;
- 43.20.Rz;
- 43.38.Hz;
- Cryogenics;
- refrigerators low-temperature detectors and other low-temperature equipment;
- Modulators and demodulators;
- discriminators comparators mixers limiters and compressors;
- Steady-state radiation from sources impedance radiation patterns boundary element methods;
- Transducer arrays acoustic interaction effects in arrays