tube cooler

基本解释

Using single stage version PTC to reach the temperature below 30 K is a difficult task for high frequency pulse tube cooler.
採用單級高頻脈沖琯制冷機獲得低於30 K的制冷溫度是脈沖琯應用的一個新方曏。
A lowest no-load temperature of 13.8 K has been obtained for the first stage without thermal connector, which is a new record for the single-stage pulse tube cooler.
在沒有熱橋連接的情況下，單獨測試第一級最低制冷溫度達到13.8 K，這是單級脈琯制冷機獲得的最低制冷溫度新紀錄。
Use single stage version to reach the temperature of 20 K is a difficulty for high frequency pulse tube cooler(PTC). Multi-stage version is a popular method to reach the low temperature.
單級高頻脈沖琯制冷機直接降低到20 K以下溫區存在很大睏難，採用多級方案是高頻脈沖琯制冷機獲得更低溫度的主要方法。