The invention discloses a
heat transfer enhancing and scale preventing and removing device and
system for
sewage or
surface water and belongs to the technical field of energy sources. By the adoption of the
heat transfer enhancing and scale preventing and removing device and
system for the
sewage or
surface water,
heat transfer enhancement of heat exchange equipment for the
sewage or
surface water containing a large quantity of
suspended matter and impurities is achieved, and the
suspended matter and scale which are hung on the wall of the heat exchange equipment and left in the heat exchange equipment can be effectively removed. The heat transfer enhancing and scale preventing and removing device is composed of a
cyclone desander, a sand regulation valve and an ejector, wherein the
cyclone desander, the sand regulation valve and the ejector communicate with one another from top to bottom. The heat transfer enhancing and scale preventing and removing
system is composed of the heat transfer enhancing and scale preventing and removing device, a
heat exchanger and a connecting pipeline for the heat transfer enhancing and scale preventing and removing device and the
heat exchanger. A water outlet of the ejector of the device communicates with the
heat exchanger through a heat exchanger water inlet
pipe, and the heat exchanger communicates with a water inlet of the
cyclone desander of the device through a heat exchanger water outlet
pipe; through repeated ejection and separation of
solid particles, the
solid particles are made to collide and rub the wall surface of the heat exchanger continuously in the process that the
solid particles flow in the heat exchanger along with
water flow, so that scale on the wall surface of the heat exchanger is removed, and meanwhile a heat exchange enhancing function is achieved. The heat transfer enhancing and scale preventing and removing device and system are used for heat exchange of the unclean water such as the sewage or the surface water.