GAS-WATER HEAT EXCHANGER WITH PROTECTION FROM LOW-TEMPERATURE CORROSION ON GAS SIDE Russian patent published in 2005 - IPC

FIELD: water heating equipment engineering, can be used in steam-gas energy plants, water heating cauldrons, industrial utilization plants.

SUBSTANCE: device has heat-exchange surface, pipeline for feeding cold water to its input and means for increasing temperature of cold water at input until value is reached, exceeding water steam condensation point in heating gases. Heat exchange surface is separated on at least two sections, serially engaged water-wise. Heat exchanger is provided with bypass pipeline for mixing cold water in accordance to cascade circuit scheme except first one to all sections. Means for temperature increase of cold water is made in form of water heater of cold water, connected via heating substance to output of hot water from last section of heat exchange surface.

EFFECT: protection of gas-water heat exchangers from low-temperature corrosion on gas side.

1 dwg