The invention relates to a
heat pump large-
diameter heat exchange device and a
system thereof for
sewage or
earth surface water source, in particular to a heat exchange device and a
system thereof for picking up heat or
refrigeration in
sewage or
earth surface water by a
heat pump technology. The invention aims at solving the key problems of
suspended matter blockage, complex process flow, large area occupation, and the like of the traditional technology for preventing blockage. The device provided by the invention is composed of two
monomer heat exchange devices in series, wherein the
monomer heat exchange device comprises a large-
diameter tube, a tube plate, a shell, an inside baffle plate, an outside baffle plate, a
sewage or
earth surface water inlet, a sewage or earth
surface water outlet, a cleaning water inlet, a cleaning water outlet, a sealing plate, and the like. The
system comprises the heat exchange device, a
heat pump set, a water pump, connecting pipelines, and the like.
Sewage or earth
surface water flows smoothly in the large-
diameter tube, and cleaning water is in a counter-current flow with the sewage outside the tube. The heat pump set then picks up heat from the cleaning water. The invention is suitable for indirect systems of heat pumps for sewage or earth
surface water source, and the front end does not need to be provided with a filter screen or a blockage prevention device. The invention realizes blockless continuous heat exchange and heat picking, and has the advantages of sufficient
corrosion allowance, little area occupation,
high heat exchange efficiency, and the like.