City sewage central heat supply (cold supply) device

Abstract

The invention of city waste water central heating(refrigeration) apparatus belongs to a new energy saving and environmental protection air conditioning apparatus in engineering field, comprising rotating type continuous filtration dirt separator, waste water lift pump, waste water source heat pump special evaporator, condenser, semiisolated helical lobe compressor and refrigeration accessory, has solved the technical problems of wasting underground water source, regional limitation, low heat exchanging rate of soil, hard to be extended to large area, heat exchanger blocked by waste water which has corrodibility, using the technical program: install rotating type continuous filtration dirt separator, and evaporator and condenser designed to do desilting automatically and continuously so that there is no block and ensure the system cam work normally. The invention has the properties : low investment and operating cost, no regional limitation, can realize resource cyclic utilization, notable environmental benefit, and can be adopted widely in central heating(refrigeration) engineering of central heating(refrigeration).

Description

technical field [0001] The invention belongs to a novel energy-saving and environment-friendly heating and air-conditioning device in the field of heating engineering. Background technique [0002] In our country, the fuel consumption of building heating in winter and cooling in summer accounts for more than 35% of the total fuel consumption. The smoke and dust produced by the combustion of these fuels seriously pollute the air and make the living environment of human beings worse. In recent years, with the gradual enhancement of people's environmental awareness, the reduction of the total amount of natural fuels and the continuous rise of fuel prices have prompted people in the industry to continuously explore new clean energy and energy-saving and environmentally friendly heating and cooling technologies, and have achieved achieved certain results. For example, the "water source heat pump" and "ground source heat pump" technologies successfully introduced and applied in m...

AI Technical Summary

Problems solved by technology

However, after several years of application practice, it is found that this technology has at least the following three problems, and it cannot be widely applied

[0003] 1. Due to geographical restrictions, it cannot be promoted nationwide

[0004] Because the water source heat pump heating (cooling) system uses groundwater as the low-temperature heat source, it must be applied in areas rich in groundwater resources, and my country is a country with relatively poor water resources, so it can only be applied in a few areas and cannot be widely promoted

[0005] 2. It is difficult to implement due to the limitation of water resource protection

[0006] Due to the lack of water resources, each city has strict restrictions on the exploitation of groundwater, and the water source heat pump heating (cooling) system is difficult to fully recharge the groundwater due to the imperfect water cycle recharge technology and geological structure. Serious phenomenon

It is understood that more than 90% of the water source heat pump systems currently in operation have a recharge rate of less than 70%.

In addition, some systems cause groundwater pollution due to unreasonable design, so this technology is difficult to implement in many areas

[0007] 3. Due to the current situation of the country, it is impossible to promote and apply it on a large scale

[0008] Ground source heat pump technology is to obtain low-grade heat energy in the soil by burying water circulation pipes in the soil. Although groundwater is not used, the heat transfer efficiency of soil buried pipes is extremely low (3~4 square meters of soil buried pipes are required per square meter of heating area) area to provide heat), a large land area is required for buried pipes

However, the building density in our country is high, the area of ​​a single building is large, and the open space around the building is small, which cannot meet the requirements of buried pipes.

At the same time, the cost of the ground source heat pump system is 2 to 3 times that of the traditional heating method. Therefore, it cannot be widely promoted and can only be applied to high-end buildings with a small area such as single villas.

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