METHOD OF HEAT RECOVERY FROM LOW-PRESSURE FLOWS AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2009 - IPC F24H1/10 

FIELD: heating.

SUBSTANCE: group of inventions relates to the methods and devices for the heat recovery from low-pressure flows to heat fluid media. The temperature of intermediate heat carrier is increased by ejecting the low-pressure hot flow with high-pressure circulating flow of the intermediate heat carrier, the low-pressure flow is cooled and separated from the intermediate heat carrier liquid flow under the pressure exceeding the initial low pressure, after the heat is recovered the pressure of the intermediate heat carrier is increased up to the initial value and the energy of the intermediate heat carrier liquid flow pressure is converted into heat energy. A low-pressure flow heat recovery installation comprises a separator with its inlet being connected to an ejector mixture outlet, a low-pressure gas outlet is connected to a fume stack and a liquid heat carrier outlet - to a pump; an ejector with the fittings for high-pressure heat carrier inlet, low-pressure hot flow inlet and mixture outlet is used as a contact device.

EFFECT: improving the efficiency of the low-pressure flow heat recovery without increasing hydraulic losses for the recovery, increasing heat amount over the recoverable one, reducing operational and capital expenditures on the installation for the method implementation, expanding the application range.

8 cl, 2 dwg