DEVICE FOR HEATING LIQUIDS AND GASES Russian patent published in 2007 - IPC F24H1/28 F22B7/14 

FIELD: power engineering.

SUBSTANCE: device comprises housing filled with the intermediate heat transfer agent and receives the pipes and bent U-shaped horizontal flue pipe. One of the ends of the flue pipe is provided with a burning device, and the other end is provided of a chimney. Each branch of the flue pipe is set one above the other and represents a high-temperature air duct from the side of the burning device and low-temperature air duct from the other side. The low-temperature gas duct of the flue pipe receives a bank of pipes oriented in the same direction as the gas ducts of the flue pipe. The pipes arranged directly inside the housing are positioned to the left and to the right of the gas ducts.

EFFECT: enhanced efficiency.

2 dwg