Waste heat recovery and multifunctional heat supply system of solar coupling heat pump

Abstract

A waste heat recovery and multifunctional heat supply system of a solar coupling heat pump comprises a solar heat collection circulation system, a high-temperature area heat collection system and a medium-temperature area heat collection system, the high-temperature area heat collection system and the medium-temperature area heat collection system are connected into an industrial waste heat pipeline, and the industrial waste heat pipeline is provided with a high-temperature waste heat pipeline heat collection section and a medium-temperature waste heat pipeline heat collection section. And a plurality of heat storage water tanks are integrated and used for storing hot water at different temperature levels, and the temperature and the flow can be adjusted, so that diversified heat supply requirements are met. Solar energy and industrial waste heat are used as main heat sources, dependence on external traditional energy is greatly reduced, and meanwhile the operation cost is remarkably reduced. And by mixing heat energy of different temperature levels, the dependence on a single high-temperature heat source is reduced, and the equipment investment cost and the operation cost are reduced. The heat pump technology in the system improves the utilization rate of heat energy, and high efficiency of heat supply at different temperature levels is ensured. And domestic hot water can be provided, high-temperature heat and medium-temperature heat can also be provided, and diversified heat supply requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of heat supply energy technology field, especially a kind of solar energy coupling heat pump's waste heat recovery and multifunctional heating system. BACKGROUND

[0002] In modern industrial production process, a large amount of energy is discharged to the environment in the form of waste heat, causing great waste of energy. For example, in chemical, metallurgical, petroleum refining and other industries, a large amount of industrial waste heat is often generated. Although most of the industrial waste heat is now treated by waste heat boiler, the high-temperature heat source after treatment is still as high as 80-90℃, and direct discharge will cause energy waste and environmental heat pollution. These waste heat is usually high in temperature, and it is difficult to effectively utilize by traditional methods. At the same time, the demand for hot water and different temperature levels of heat energy is growing, and how to efficiently utilize these high-temperature heat sources to meet the demand for heat energy of different temperature levels has become a problem to be solved.

[0003] Therefore, it is of great significance to develop a multifunctional heating system that can efficiently recover industrial waste heat and provide heat energy of different temperature levels for realizing sustainable utilization of energy, protecting the environment and reducing heating cost. SUMMARY

[0004] The utility model solves the technical problem in the prior art, and provides a waste heat recovery and multifunctional heating system of solar energy coupling heat pump, which realizes maximum energy utilization and reduces the impact on the environment.

[0005] The utility model solves the technical problem by the following technical scheme, a waste heat recovery and multifunctional heating system of solar energy coupling heat pump, comprising an industrial waste heat pipeline, characterized in that: the industrial waste heat pipeline is provided with an A area and a B area, the A area is a high-temperature waste heat pipeline heat collecting section, and the B area is a medium-temperature waste heat pipeline heat collecting section,

[0006] comprising a solar heat collecting and circulating system, a high-temperature heat collecting system and a medium-temperature heat collecting system,

[0007] The high-temperature heat collecting system comprises a high-temperature heat pump system and a high-temperature water tank, the high-temperature heat pump system comprises a high-temperature evaporator and a high-temperature condenser, the high-temperature evaporator is arranged in the A area to absorb the heat energy of the high-temperature waste heat pipeline heat collecting section; the high-temperature evaporator and the high-temperature condenser are connected by a high-temperature circulating pipeline, and the high-temperature condenser is connected with the high-temperature water tank by a high-temperature heat exchange circulating pipeline;

[0008] The medium-temperature heat collecting system comprises a medium-temperature heat pump system and a medium-temperature water tank, the medium-temperature heat pump system comprises a medium-temperature evaporator and a medium-temperature condenser, the medium-temperature evaporator is arranged in the B area and used for absorbing heat energy of the heat collecting section of the medium-temperature waste heat pipeline, and the medium-temperature evaporator and the medium-temperature condenser are connected through a medium-temperature circulating pipeline.

[0009] The solar heat collecting circulating system comprises a solar heat collector, and the solar heat collector is connected with the high-temperature water tank and the medium-temperature water tank through a circulating heat pipeline in series.

[0010] The technical problem to be solved by the utility model can be further realized by the following technical scheme, the heat pipeline between the solar heat collector and the high-temperature water tank is connected with a heat storage water tank and a solar hot water circulating pump.

[0011] The technical problem to be solved by the utility model can be further realized by the following technical scheme, the heat pipeline between the solar heat collector and the high-temperature water tank is connected with a heat storage water tank and a solar hot water circulating pump.

[0012] The technical problem to be solved by the utility model can be further realized by the following technical scheme, the heat pipeline between the solar heat collector and the high-temperature water tank is connected with a heat storage water tank and a solar hot water circulating pump.

[0013] The technical problem to be solved by the utility model can be further realized by the following technical scheme, the heat pipeline between the solar heat collector and the high-temperature water tank is connected with a heat storage water tank and a solar hot water circulating pump.

[0014] The technical problem to be solved by the utility model can be further realized by the following technical scheme, the heat pipeline between the solar heat collector and the high-temperature water tank is connected with a heat storage water tank and a solar hot water circulating pump.

[0015] Compared with the prior art, the utility model uses solar energy and industrial waste heat as the main heat source, greatly reduces the dependence on external traditional energy, and significantly reduces the operation cost. Using clean energy as the main heat source reduces the pollution to the environment and meets the concept of sustainable development. By mixing heat energy of different temperature levels, the dependence on single high-temperature heat source is reduced, and the equipment investment cost and operation cost are reduced. The heat pump technology in the system improves the utilization rate of heat energy and ensures the high efficiency of heat supply of different temperature levels. The system not only provides domestic hot water, but also provides high-temperature heat and medium-temperature heat, meeting the diversified heat supply demand. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model relates to a structure diagram. DETAILED DESCRIPTION

[0017] The specific technical solutions of the present application are further described below. In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, and to facilitate those skilled in the art to further understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments, and do not constitute a limitation on the rights thereof. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] A waste heat recovery and multifunctional heat supply system of a solar energy coupled heat pump, comprising an industrial waste heat pipeline, the industrial waste heat pipeline is provided with an A area and a B area, the A area is a high-temperature waste heat pipeline heat collecting section, the B area is a medium-temperature waste heat pipeline heat collecting section,

[0019] The system comprises a solar heat collecting circulating system, a high-temperature area heat collecting system and a medium-temperature area heat collecting system,

[0020] The high-temperature area heat collecting system comprises a high-temperature heat pump system and a high-temperature water tank, the high-temperature heat pump system comprises a high-temperature stage evaporator and a high-temperature stage condenser, the high-temperature stage evaporator is arranged in the A area and used for absorbing heat energy of the high-temperature waste heat pipeline heat collecting section; the high-temperature stage evaporator and the high-temperature stage condenser are connected through a high-temperature stage circulating pipeline, and the high-temperature stage condenser is connected with the high-temperature water tank through a high-temperature stage heat exchange circulating pipeline;

[0021] The medium-temperature area heat collecting system comprises a medium-temperature heat pump system and a medium-temperature water tank, the medium-temperature heat pump system comprises a medium-temperature stage evaporator and a medium-temperature stage condenser, the medium-temperature stage evaporator is arranged in the B area and used for absorbing heat energy of the medium-temperature waste heat pipeline heat collecting section; the medium-temperature stage evaporator and the medium-temperature stage condenser are connected through a medium-temperature stage circulating pipeline, and the medium-temperature stage condenser is connected with the medium-temperature water tank through a medium-temperature stage heat exchange circulating pipeline;

[0022] The solar heat collecting circulating system comprises a solar heat collector, the solar heat collector is connected with the high-temperature water tank and the medium-temperature water tank in series through a circulating heat pipeline.

[0023] A heat storage water tank and a solar hot water circulating pump are connected in the heat pipeline between the solar heat collector and the high-temperature water tank. A domestic water terminal is arranged on the heat storage water tank.

[0024] A mixing water tank and a warm water return circulating pump are connected in the heat pipeline between the solar heat collector and the medium-temperature water tank. The mixing water tank is connected with a soft water tank through a pipeline.

[0025] A medium-temperature heat terminal is connected to the outlet side of the medium-temperature water tank.

[0026] Solar heat collector: used for collecting sunlight energy and converting it into heat energy to heat water to produce high-temperature hot water.

[0027] Hot water storage tank: used to store hot water heated by solar collector.

[0028] High temperature level evaporator and medium temperature level evaporator: used to absorb heat energy from high temperature waste heat pipeline A area and B area respectively.

[0029] High temperature level and medium temperature level condenser: respectively transfer absorbed heat to high temperature hot water circulation system and medium temperature hot water circulation system.

[0030] High temperature water tank and medium temperature water tank: used to store hot water heated by corresponding condenser.

[0031] High temperature hot water circulation pump and medium temperature hot water circulation pump: respectively used to push high temperature and medium temperature hot water circulation.

[0032] Mixing water tank: used to mix hot water from hot water storage tank with soft water.

[0033] Soft water pump: used to deliver softened water to mixing water tank.

[0034] End user water supply system: including domestic hot water end, high temperature heat end and medium temperature heat end.

[0035] Solar collector first collects solar energy to convert into heat energy, heats water to a certain temperature, and stores it in hot water storage tank (60-70℃).

[0036] Industrial waste heat is absorbed by high temperature level evaporator and medium temperature level evaporator through high temperature waste heat pipeline A area (80-90℃) and B area (50-70℃) respectively.

[0037] The refrigerant that has absorbed waste heat is compressed in the corresponding compressor, and after the temperature is raised, it releases heat in the condenser to the high temperature and medium temperature hot water circulation system.

[0038] Hot water heated by condenser is stored in high temperature water tank and medium temperature water tank, and circulated by respective circulation pump to provide stable heat supply for different demand ends, among which domestic water: 40-50℃ (60-70℃ hot water in hot water storage tank and municipal incoming water mixed to reduce temperature and supplied to domestic water), high temperature heat: 70-80℃, medium temperature heat: 50-60℃.

[0039] Hot water in high temperature water tank can be supplemented to medium temperature hot water circulation system to realize stable supply of medium temperature hot water.

[0040] Hot water in medium temperature water tank can be supplied to medium temperature heat end, or mixed with hot water generated by solar collector through mixing water tank, further increasing the water temperature, and finally circulating to high temperature water tank for water supply.

[0041] Specifically shown in the accompanying drawings:

[0042] The heat source in the 1-high temperature waste heat pipeline A zone is 80-90℃, which is absorbed by the refrigerant through the 201-high temperature evaporator. After passing through the 202-first filter and the 203-first liquid tank, the refrigerant transfers heat to the 3-high temperature hot water circulation system through the 204-high temperature condenser. Then the refrigerant with reduced temperature passes through the 205-first gas-liquid separator and the 206-high temperature compressor and then returns to the 201-high temperature evaporator to absorb heat.

[0043] The heat source in the 1-high temperature waste heat pipeline B zone is 50-70℃, which is absorbed by the refrigerant through the 401-medium temperature evaporator. After passing through the 402-second filter and the 403-second liquid tank, the refrigerant transfers heat to the 5-medium temperature hot water circulation system through the 404-medium temperature condenser. Then the refrigerant with reduced temperature passes through the 405-first gas-liquid separator and the 406-medium temperature compressor and then returns to the 401-medium temperature evaporator to absorb heat.

[0044] The hot water in the 3-high temperature hot water circulation pipeline absorbs heat from the 204-high temperature condenser, enters the 303-high temperature hot water tank through the 302-high temperature water tank inlet, and is then pumped to the 204-high temperature condenser by the 301-high temperature hot water circulation pump to absorb heat.

[0045] The hot water in the 5-medium temperature hot water circulation pipeline absorbs heat from the 404-medium temperature condenser, enters the 503-medium temperature hot water tank through the 502-medium temperature water tank inlet, and is then pumped to the 404-medium temperature condenser by the 501-medium temperature hot water circulation pump to absorb heat.

[0046] The hot water in the 303-high temperature hot water tank flows out through the 601-high temperature water tank outlet, is delivered to the high temperature heat utilization terminal through the 602, and the high temperature return water enters the 503-medium temperature hot water tank through the 603-medium temperature water tank return water inlet. The medium temperature hot water in the 503-medium temperature hot water tank is delivered to the 605-medium temperature heat utilization terminal through the 604-medium temperature water tank outlet, and the medium temperature return water is delivered to the 607-mixed water tank through the 606-medium temperature hot water return water circulation pump. The soft water stored in the 608-soft water tank is delivered to the 607-mixed water tank and the medium temperature return water through the 610-soft water pump, and the mixed water enters the 612-solar heat collector to absorb solar heat and increase the water temperature. The hot water enters the 613-thermal storage tank, which can provide heat to the 614-living hot water terminal. The hot water in the 613-thermal storage tank can also be delivered to the 303-high temperature hot water tank through the 615-solar hot water circulation pump to supplement the water heat of the 3-high temperature hot water circulation system.

Claims

1. A solar energy coupled heat pump waste heat recovery and multifunctional heating system, comprising an industrial waste heat pipeline, characterized in that: the industrial waste heat pipeline is provided with an A zone and a B zone, the A zone is a high-temperature waste heat pipeline heat collecting section, and the B zone is a medium-temperature waste heat pipeline heat collecting section; the system comprises a solar heat collecting circulation system, a high-temperature zone heat collecting system and a medium-temperature zone heat collecting system; the high-temperature zone heat collecting system comprises a high-temperature heat pump system and a high-temperature water tank, the high-temperature heat pump system comprises a high-temperature stage evaporator and a high-temperature stage condenser, the high-temperature stage evaporator is arranged in the A zone and used for absorbing heat energy of the high-temperature waste heat pipeline heat collecting section; the high-temperature stage evaporator and the high-temperature stage condenser are connected through a high-temperature stage circulation pipeline, and the high-temperature stage condenser is connected with the high-temperature water tank through a high-temperature stage heat exchange circulation pipeline; the medium-temperature zone heat collecting system comprises a medium-temperature heat pump system and a medium-temperature water tank, the medium-temperature heat pump system comprises a medium-temperature stage evaporator and a medium-temperature stage condenser, the medium-temperature stage evaporator is arranged in the B zone and used for absorbing heat energy of the medium-temperature waste heat pipeline heat collecting section; the medium-temperature stage evaporator and the medium-temperature stage condenser are connected through a medium-temperature stage circulation pipeline, and the medium-temperature stage condenser is connected with the medium-temperature water tank through a medium-temperature stage heat exchange circulation pipeline; the solar heat collecting circulation system comprises a solar heat collector, and the solar heat collector is connected with the high-temperature water tank and the medium-temperature water tank in series through a heat using pipeline. A heat storage water tank and a solar hot water circulation pump are connected in the heat using pipeline between the solar heat collector and the high-temperature water tank. A domestic water terminal is arranged on the heat storage water tank. A mixing water tank and a warm water return circulation pump are connected in the heat using pipeline between the solar heat collector and the medium-temperature water tank. The mixing water tank is connected with a soft water tank through a pipeline. A medium-temperature heat using terminal is connected to the outlet side of the medium-temperature water tank.

2. The solar energy coupled heat pump's waste heat recovery and multifunctional heating system according to claim 1, characterized in that: ​ 3. The solar energy coupled heat pump's waste heat recovery and multifunctional heating system according to claim 2, characterized in that: ​ 4. The solar energy coupled heat pump's waste heat recovery and multifunctional heating system of claim 1, wherein: ​ 5. The solar energy coupled heat pump's waste heat recovery and multifunctional heating system of claim 1, wherein: ​ 6. The solar energy coupled heat pump's waste heat recovery and multifunctional heating system of claim 1, wherein: ​

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