Numerical simulation of a GM-type pulse tube cryocooler system: Part II. Rotary valve and cold head
| Autor: | Dongli Liu, Guenter Thummes, Marc Dietrich, Zhihua Gan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Exergy
Pressure wave Materials science Computer simulation 020209 energy General Physics and Astronomy Mechanical engineering 02 engineering and technology 01 natural sciences 0103 physical sciences Cooling power 0202 electrical engineering electronic engineering information engineering Head (vessel) General Materials Science 010306 general physics Pulse tube refrigerator Gas compressor Rotary valve |
| Zdroj: | Cryogenics. 81:100-106 |
| ISSN: | 0011-2275 |
| DOI: | 10.1016/j.cryogenics.2016.11.006 |
| Popis: | A simplified model to characterise a rotary valve is proposed. This model is used inside a complete GM-type pulse tube cryocooler (GMPTC) simulation including the compressor, rotary valve and cold head. The verification of the model is presented including the pressure wave, cooling power and COP by comparing the simulation results to the experimental data of an existing GMPTC system. The exergy losses produced by the compressor, rotary valve and cold head are discussed. This paper is aimed to propose a simulation method which can be applied to analyse and optimise a GMPTC cold head by using the characteristics of a specific compressor and rotary valve. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect