Pulse tube refrigerator - Wikipedia
The pulse tube refrigerator (PTR) or pulse tube cryocooler is a developing technology that emerged largely in the early 1980s with a series of other innovations in the broader field of …
Pulse Tube Cryocoolers: A Cryogen-Free Path to 2K
In this paper, we have briefly covered the operation mechanisms and advances associated with the pulse tube refrigerator. It is a compact, vibration and cryogen free refrigerator capable of …
Carnot efficiencies as high as about 20% at 80 K and temperatures as low as 2 K have been achieved in pulse tube refrigerators. The operating principles for the different types of pulse …
Dynamic acoustic optimization of pulse tube refrigerators for …
2024年4月23日 · Pulse tube refrigerators are unique in that they use an acoustic network (Fig. 1) to produce traveling-wave phasing between p1 and U1 without any cold moving parts; …
Cryogenics - NIST
There are many common applications of cryocoolers. One of the most common is for the cooling of infrared sensors to temperatures of 80-150 K for use in military night vision equipment. The …
The Big Quantum Chill: NIST Scientists Modify Common Lab Refrigerator …
2024年4月23日 · Animations show a simplified version of a pulse tube refrigerator (PTR), commonly used to cool materials to a few degrees above absolute zero by compressing and …
Pulse Tube Cryocoolers - SpringerLink
Pulse tube refrigerators operate with oscillating pressures and mass flows and have no moving parts in the cold end. For large industrial systems the mechanical compressor can be replaced …
High‐frequency Pulse‐tube Refrigerator for 4 K
2006年4月27日 · The main goal of this research is to develop a Stirling‐type 4‐K pulse‐tube refrigerator. This implies higher operating frequencies, compared to the usual 1–2 Hz.
step-by-step procedure for an approximate design of the pulse tube refrigerator. This approach relies on design charts for the regenerator and inertance tube that have been developed …
Pulse tube refrigerator - chemeurope.com
Figure 1 represents the Stirling-type single-orifice Pulse-Tube Refrigerator (PTR). From left to right the components are: a buffer volume (a large closed volume at practically constant …
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