Method and system for heating a liquid
 A direct contact gas-to-liquid method and system for heating a liquid with a burning source being wholly submerged and producing-power is disclosed. A liquid is heated by an internal combustion engine means, which is submerged in a container and can utilize the inherent swelling power from the burning gases in the engine means to draw large air into the engine means to support the burning without any other drift device, and to further drive other devices supplying and heating the liquid in the heating method and the heating system. 
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inventional additional inventional
Weicheng
Li