<p>SURFACE TENSION BOILER A vaporizer for vaporizing liquid fuels having improved heat transfer and controls for vaporization of liquid fuels in response to varying degrees of fuel vapor demand and temperature requirements having a heat exchanger formed from multiple chambers having opposing surfaces with small but effective passages formed therebetween and the opposing surfaces being in small but effective passage relationship for sufficient length for the surface tension between a liquid fuel and the opposing surfaces of said multiple chambers to spread the liquid fuel over the opposing surfaces of said multiple chambers for maintaining said liquid fuel in relatively constant and thin liquid relationship to the opposing surfaces of the multiple chambers of the heat exchanger until the liquid fuel is vaporized; a delivery system for delivering liquid fuel to the heat exchanger; a heat delivery system for delivering heat and a heat exchanger for vaporizing the liquid fuel therein and controls for the flow of vaporized liquid fuel from the vaporizer and controls for flowing of the liquid fuel to the heat exchanger.</p>
