Abstract
A vented tank being filled with liquid oxygen (lox) may experience a negative pressure differential as well as a positive differential with respect to atmospheric pressure. If the tank walls have little compressive strength, then it is essential to avoid a flow condition which will create a negative pressure differential, Heat transfer to the lox may occur via the following processes: (1) Radiation transfer from the tank walls to lox droplets, (2) Conduction transfer to lox in contact with the tank floor and conduction transfer to lox which contacts the walls and top of the tank. (3) Convection transfer from the tank walls to the air in the tank and from air in the tank to accumulated lox at the bottom of the tank. (4) Transfer of heat to lox droplets from the air in the tank. In this case, the principal transfer of heat to droplets takes place via a conduction mechanism. A convective term associated with the droplet and air motion must also be included.
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