Multi-heat-source graded hot water supply system and control method thereof

Abstract

The invention provides a multi-heat-source graded hot water supply system and a control method of the multi-heat-source graded hot water supply system. The multi-heat-source graded hot water supply system comprises a water storage device, a renewable energy source heating subsystem, an electric heating subsystem, a waste water waste heat recycling subsystem and a hot water outputting subsystem connected with the water storage device, wherein the renewable energy source heating subsystem, the electric heating subsystem and the waste water waste heat recycling subsystem provide heat for the water storage device. The water storage device comprises two or more hot water cavities. According to the multi-heat-source graded hot water supply system, the renewable energy source heating subsystem, the electric heating subsystem and the waste water waste heat recycling subsystem provide heat for the water storage device, so that water in different hot water cavities in the water storage device isheated to different temperatures, heat provided by a renewable energy source and waste heat stored by waste water are intensively utilized, so that the recycling problem of the waste heat of the waste water is solved, and electric power input is reduced; all the subsystems are mutually independent and are also organically combined into a whole, so that arrangement is flexible, and land and materials are saved; the energy resources are independent, and management is convenient; the multi-heat-source graded hot water supply system is compact and reduces energy consumption; the multi-heat-sourcegraded hot water supply system is adapted to load and improves the energy efficiency; and the multi-heat-source graded hot water supply system adopts modular production and is simple and clear in installation, safe, stable, economic and reliable.

Description

technical field [0001] The invention relates to a water supply system, in particular to a multi-heat source graded hot water supply system and a control method thereof. Background technique [0002] Economic and social development is accompanied by continuous consumption of energy and gradual pollution of the environment, both of which have become bottlenecks restricting sustainable development. With the enhancement of environmental awareness and the emphasis on energy conservation, people have gradually explored two feasible ways, one is to seek the utilization of renewable energy; the other is to reduce energy waste. [0003] People need a lot of hot water in their lives. The existing hot water supply often only uses motor heat, which fails to make good use of the above-mentioned renewable energy; moreover, the application of hot water is often accompanied by huge energy waste. Wastewater from bathing and industrial production contains a lot of waste heat, which is lost w...

AI Technical Summary

Problems solved by technology

[0003] People need a lot of hot water in their lives. The existing hot water supply often only uses motor heat, which fails to make good use of the above-mentioned renewable energy; moreover, the application of hot water is often accompanied by huge energy waste. Wastewater from bathing and industrial production contains a lot of waste heat, which is lost with the discharge of waste water

[0004] The traditional centralized wastewater waste heat utilization system needs to build a hot water machine room, place a hot water storage tank, complex pipeline design, circulation pump, plate replacement and other facilities, which are expensive, difficult to install, and high in operation and maintenance costs; Before water reaches the water tank, it needs to flow through complex pipelines. This process is accompanied by huge heat loss, and the thermal efficiency is not high; and the centralized storage of a large amount of wastewater will pollute the environment and degrade the water quality, so the waste heat in the wastewater has not been effectively utilized.

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