SUPPLY AND EXHAUST PLANT WITH EXHAUST HEAT RECOVERY AND INDIRECT ADIABATIC COOLING OF SUPPLY AIR Russian patent published in 2015 - IPC F24F7/08 

FIELD: ventilation.

SUBSTANCE: supply and exhaust plant with exhaust heat recovery and indirect adiabatic cooling of supply air includes supply and exhaust chambers, plate-type cross-flow recuperator mounted in diagonal, controlled recirculation air valve, the supply chamber includes inlet pipe, controlled and heated inlet air valve, air filter, bypass valve, mixing chamber with controlled air valve at the inlet, air heater unit, ventilation unit and discharge pipe, exhaust chamber includes air filter, ventilation unit, controlled air valve mounted at recuperator inlet, inlet and discharge pipes, supply air cooler. Supply chamber features additional inlet pipe with air filter, exhaust chamber features additional controlled air valve, additional inlet pipe with controlled and heated discharge valve and additional inlet pipe positioned between controlled and additional controlled air valves, controlled and heated inlet valve and air filter, recuperator consists of a case with walls, bottom, pan for condensate collection with drain choke and siphon, and four-stage heat exchanger made of plate-type heat exchangers connected in sequence by ridges and placed inside recuperator case in two rows separated by vertical partition connected to side ridges of heat exchangers. External ridges of heat exchanger rows are connected tightly to side walls of recuperator case, lower heat exchangers are connected by master link. In addition, floor panel of supply and exhaust plant features access hole in intermediate horizontal partition, top half of upper heat exchangers is protruding beyond recuperator case flanges and integrated through the access hole in the floor panel of supply and exhaust plant into supply chamber with tight connection of recuperator case flanges to the floor panel and of loose ends of upper heat exchangers to side walls of supply air chamber, recuperator is integrated by top ridges of upper heat exchangers into the main hole of intermediate horizontal partition, supply and exhaust plant features transverse partition in the main hole of intermediate horizontal partition, mounted on vertical partition of recuperator and connected to top panel of supply and exhaust plant thus forming air ducts connecting upper heat exchangers of recuperator with chambers of supply and exhaust plant, supply air cooler is made in the form of adiabatic damper of exhaust air with feeding water pipeline that are positioned in the exhaust chamber between controlled air valve and recuperator, bypass valve is installed in additional inlet pipe of supply chamber at the inlet before air filter, discharge pipe of exhaust chamber is positioned above inlet pipe of supply chamber, and side walls and bottom of recuperator feature maintenance hatches.

EFFECT: improved energy efficiency of plant during cold and warm seasons, extended functional capabilities.

9 cl, 17 dwg, 3 tbl