Heat transfer enhancing and scale preventing and removing device and system for sewage or surface water

Abstract

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.

Description

technical field

[0001] The invention relates to an enhanced heat transfer and anti-scaling device and system for sewage or surface water, belonging to the technical field of energy. Background technique

[0002] Using heat pump technology to extract low-grade cold heat from unclean water such as sewage or surface water to provide heating and cooling for buildings has important energy-saving and environmental protection significance. However, since unclean water such as sewage or surface water contains a large amount of suspended solids and impurities, the heat exchange equipment used in sewage or surface water has the problem of fouling. Not only the heat exchange efficiency is low, but also the amount of dirt cleaning is large, which is time-consuming and laborious. At present, the cleaning method of heat exchange equipment used in sewage or surface water is mainly manual cleaning, by opening the sewage side sealing door for hydraulic flushing, or simple hydraulic backwashi...

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