HEAT EXCHANGER Russian patent published in 2009 - IPC F22D1/32 F28D7/06 F22B1/08 

FIELD: heating.

SUBSTANCE: invention relates to the field of power engineering and is to find application in heat exchanger apparatus of low and high pressure feed heating systems of steam turbines, heat exchanger apparatus of heat supply systems designed to provide for water reheating due to steam condensation on the heat exchange surface tubes. Proposed is a heat exchanger composed of a housing with a nipple for steam inlet and steam condensate outlet, a tubular system, a water distribution chamber with an inlet, a turn and an outlet compartments with heated water inlet and outlet nipples. Before the nipple for heated water inlet into the heat exchanger a device is installed that reduces the flux passage and is connected to the water chamber turn compartment via a duct equipped with a control valve (valve gate).

EFFECT: improvement of the heat exchanger operational cost-efficiency due to provision for heated water recirculation and increase of the rate of its flow through the heat exchange surface tubes; the tube inside contamination intensity reduction and increase of heated water temperature at the heat exchanger inlet and outlet.

1 dwg