With describing the cascade refrigerationtechnique, the mixing refrigerationtechnique, and the expanding refrigerationtechnique, the working principle of the above 3 LNG plants is introduced.
Introducing American haas production line, the technique is in the domestic leading position in China is refrigeration equipment production and export important base.
引进美国哈斯生产线,技术处于国内领先地位,是我国制冷设备生产和出口的重要基地。
3
Based on the thermoelectric refrigeration principle and PID parameter self-tuning control technique, a temperature controller for semiconductor laser's environment test is designed.