Consult on the current status of expanders
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I would like to ask the friends in the group for some information regarding expanders: (1) What is the maximum inlet pressure that can be achieved at the expansion end of domestic expanders? What are the normal efficiency levels for the expansion end and the coaxial pressurization end? Who are the main manufacturers? (2) Which are the main manufacturers of expanders abroad? Other questions remain the same as above.
The cryogenic expanders produced by Hangzhou Hangyang perform very well; ours has worked without any problems throughout one cycle, with a speed of 15,000 revolutions – it’s excellent.
(1) Domestic ones don’t respond anymore. (2) Overseas ones – actually, those old brands plus our new brand (the people are still from the old brands). The established Cryostar + ACD + Atlas Copco. We are UniEco, a new brand with great value for money. The core rotor part is designed and manufactured in the United States, ensuring that the entire unit boasts the same quality as fully imported models. Our efficiency level: expansion end efficiency 0.85~0.90. The efficiency at the pressurization side is 0.78~0.85.
Domestic ones: the major players are Hangzhou Oxygen and Sichuan Air; Xida is quite small, probably because it spends money on advertising on Baidu