Abstract: This invention relates to a novel two-stage heat recovery submerged combustion heating system. More particularly, this invention relates to a novel submerged combustion heating system with a lowered self-cooling combustion chamber and a two stage heat recovery system. The system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and liquid-solid solutions.

Abstract: This invention relates to a novel two-stage heat recovery submerged combustion heating system. More particularly, this invention relates to a novel submerged combustion heating system with a lowered self-cooling combustion chamber and a two stage heat recovery system. The system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and liquid-solid solutions.

Abstract: A starting assist control circuit for an electrodeless light source in which a UV source for assisting in starting an electrodeless lamp is coupled in series with the dc supply for a microwave power source for the lamp so that a reduced dc voltage is supplied to the microwave power source at lamp starting. At staring, a capacitive impedance element is coupled across the inner and outer conductors of the fixture to provide an additional starting assist by creating a condition of resonance in the fixture. A heat responsive bimetallic switch element associated with both the capacitor and the UV source automatically shorts out the UV source and decouples the capacitor after the lamp has started thereby permitting full dc power to the microwave power source during the operating condition of the lamp.

Abstract: A light source includes a source of high frequency power, an electrodelsss lamp and a termination fixture for coupling power to the lamp, the fixture having an outer conductor and an inner conductor whose length is adjustable for providing dynamic matching of the impedance of the lamp during the operating mode to the output impedance of the source. Variations in the power level from the source, such as is desirable in providing lamp brightness selectivity, vary both the real and imaginary components of the lamp impedance, and corresponding adjustments of the inner conductor length provide a tuning technique to compensate for these variations.