FIELD: power engineering.
SUBSTANCE: heat recovery unit is proposed, which comprising a furnace chamber with screen surfaces of heating, which by means of a smoke exhaust is hydraulically connected with a water heater and a convective air heater. As a result of welding with perpendicularly arranged frontal and rear support boards with a gas partition, a screen water cavity, inside of which there is a furnace chamber and a gas burner, and with water pipes, there is a frame formed, to water tubes of which there are air heat exchange elements welded, forming between each other channels of combustion products for opposite circular heat exchange of combustion products with air and water, besides, the inlet water nozzle is serially connected by means of water tubes via the rear and screen cavities with an outlet water nozzle, besides, water motion along water tubes is also arranged oppositely to the combustion products.
EFFECT: device with reduced weight and dimension indices and to increase its efficiency factor.
6 dwg
