Pulse tube refrigerator

Figure 1: Schematic drawing of a Stirling-type single-orifice PTR. From left to right: a compressor, a heat exchanger (X1), a regenerator, a heat exchanger (X2), a tube (often called

Figure 2: Left: (near X2): a gas element enters the pulse tube with temperature TL and leaves it with a lower temperature. Right: (near X3): a gas element enters the tube with temperature TH and leaves it with a higher temperature.

Figure 3: The temperature of PTRs over the years. The temperature of 1.2 K is reached in a collaboration between the groups of Giessen and Eindhoven. They used a superfluid vortex cooler as an additional cooling stage to the PTR.

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 thermoacoustics. In contrast with other cryocoolers (e.g. Stirling cryocooler and GM-refrigerators), this cryocooler can be made without moving parts in the low temperature part of the device, making the cooler suitable for a wide variety of applications.

单词	Pulse tube refrigerator
释义	Pulse tube refrigerator 英语百科 Pulse tube refrigerator 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 thermoacoustics. In contrast with other cryocoolers (e.g. Stirling cryocooler and GM-refrigerators), this cryocooler can be made without moving parts in the low temperature part of the device, making the cooler suitable for a wide variety of applications.
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