Patent ID: 6134805
Filing Date: 2000-10-24
Classification: F17C,Y02E

Abstract:
A method of detecting an occurrence of a liquid dry condition in a container containing a liquefied compressed gas while the gaseous phase of the liquefied compressed gas is being removed from the container over time, comprising the steps of:measuring pressure (P) inside the container over time;measuring temperature (T) inside the container over time;determining a rate of change in the pressure (dP/dt) inside the container over time;determining a rate of change in the temperature (dT/dt) inside the container over time; andidentifying an occurrence of a sudden increase in the rate of change in the temperature (dT/dt) inside the container and a substantially simultaneous occurrence of a sudden decrease in the rate of change in the pressure (dP/dt) inside the container, said substantially simultaneous occurrences indicating an occurrence of a liquid dry condition in the container.