| 摘要 |
<p>Fuel gas is made by passing air from a nozzle through a Venturi tube so as to suck a liquified petroleum gas, e.g. butane or propane, into the tube to form a mixture, and leading the mixture into a heat exchanger for heating and vaporizing. Air is delivered to the jet by a blower and the butane or propane is led by a pipe from a reservoir to the constriction in the Venturi. No details of the heat exchanger are given. The fuel gas is passed to a storage tank.</p> |
