Cryogenic tanks store liquefied gases such as nitrogen (-196°C), oxygen (-183°C), argon, LNG, and hydrogen (-253°C). They feature double-walled vacuum-insulated construction with perlite or multilayer insulation (MLI) to minimize heat leak.

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Materials include stainless steel or aluminum for inner vessels. Applications include medical gas supply, industrial gas distribution, and liquid hydrogen fueling.

Challenges include boil-off management, pressure buildup, and vacuum loss over time.