General - An anesthetic device for emergency use must provide the anesthetic agent in the emergency case quickly and reliably with the quantity needed. With the principle of a thermal transport of the gas, the pressure is obtained by the partial vaporisation of the anesthetic liquid in a closed comtainer.

The aim of the design of an emergency anesthetic device is to reach the necessary conditions for its mergency use extremly fast. At the same time, the selected temperatures of the device must ensure that the critical temperature level for the organic components will not be exceeded.

Using the method of numerical flow simulation, the very complex process of vaporisation, transfer of the vaporisation heat and heat transfer in the walls of the device can be modelled. The simulation model also predicts the pressure increase in the closed container due to the vaporised anesthetic as well as change of the liquid properties with varying temperature and pressure. The condensation processes of the vapour at the cold walls of the container are also considered

As a result of the simulation, the complex processes of the cooled boiling can be predicted. They deliver detailed distributions of the temperatur at the walls and within liquid. By this, the offer a reliable decision-making tool for the selection and further optimisation of the design. The simulation results have been verified by experiments.

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