A cascade pulse tube cooler capable of energy recovery
| Autor: | Sun Xiao, Wu Mei, Zhihua Gan, Longyi Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Energy recovery
Work (thermodynamics) Engineering business.industry 020209 energy Mechanical Engineering Electrical engineering 02 engineering and technology Building and Construction Mechanics Management Monitoring Policy and Law Dissipation Cooling capacity 01 natural sciences symbols.namesake General Energy Cascade 0103 physical sciences 0202 electrical engineering electronic engineering information engineering symbols Tube (fluid conveyance) 010306 general physics business Carnot cycle Pulse tube refrigerator |
| Zdroj: | Applied Energy. 164:572-578 |
| ISSN: | 0306-2619 |
| Popis: | A pulse tube cryocooler (PTC) cannot work with Carnot efficiency due basically to the expansion work that has to be dissipated thermally at the warm end of the pulse tube, this dissipation is especially phenomenal with high cooling capacity or at high temperatures which reduces the COP and limits the application of PTC above 120 K. Therefore, how to recover this amount of dissipated work becomes a critical issue in a high efficient PTC. Here, we proposed a cascade PTC with a built-in transmission tube between stages for energy recovery. The key point of this new configuration is that the acoustic power at the outlet of the primary stage can be recovered through the transmission tube which provides proper phase angle to drive the secondary stage. This idea is verified both theoretically and experimentally. The cooling efficiency can be improved by 33% when the machine works at 233 K. |
| Databáze: | OpenAIRE |
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