The costs, weight, and safety factors associated with tankage at such high pressures is rarely justified for LOX. Ammonia - Dynamic and Kinematic Viscosity vs. A tank would need to be be able to handle that pressure, plus a safety margin, which is basically how butane and propane tanks operate, but at much lower vaporization pressures. Myoglobin helps muscle tissue store oxygen and just like. It is in fact a mixture of a protein called 'Myoglobin' and water. If the LOX can be held to that pressure, even as the temperature rises above the critical point (-119 deg C and 50 Bar), the gas density would be the same as if it were still a liquid (supercritical). While investigating facts about Liquid Oxygen Drops and Liquid Oxygen Temperature, I found out little known, but curios details like: The red liquid seeping out of a cooked rare steak isn't blood. BN employs canned motors, magnetic couplings, and advanced seal technologies in the liquid oxygen pumps it produces. However, the expansion coefficient of Oxygen as it changes from liquid to gas at room temperature is around 860:1 or 12,641 PSI. Typical gaseous O2 tanks are designed for safe storage at pressures of 200-300 Bar. Most real-world tanks operate somewhere in-between these two extremes, with the goal being an optimal combination of pressure and insulation. A tank that keeps O2 liquid for a long time at atmospheric pressure (1 Bar), which would require a lot of insulation. A tank with enough pressure capability to keep the O2 liquid even when at room temperature (requiring essentially no insulation).The lower the pressure of the tank, the more insulation (or quality) of insulation is required. The two big considerations are pressure and insulation. There are several excellent answers here, but I’ll add one little bit that some may perhaps find useful.
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