CN216716614U - A wind-photoelectric-thermal complementary cold and hot water dual supply system - Google Patents

Abstract

The utility model provides a wind-solar-electric-heat complementary cold-hot water dual-supply system which comprises a solar photovoltaic photo-thermal system, a wind-solar complementary power generation system and a heat pump-water tank cold and heat accumulation system, wherein the solar photovoltaic photo-thermal system comprises a solar heat collector, a solar photovoltaic power generation assembly and a photo-thermal module arranged on the back of the photovoltaic power generation assembly; the wind-solar complementary power generation system regulates and controls the electric energy generated by the wind driven generator and the solar photovoltaic power generation component; the heat pump-water tank cold and heat accumulation system prepares high-temperature cold water as cooling water to transfer cold energy in the water tank to a building for cooling or is used for preparing low-temperature hot water to be stored in the cold accumulation/hot water tank to transfer heat energy in the water tank to the building as domestic hot water or for heating. The utility model combines wind, light and electricity, light and heat, a heat pump and a water tank, and realizes the purposes of simultaneously providing electric energy, domestic hot water, heating and cooling for buildings by combining a heat pump technology, a renewable energy utilization technology and an energy storage and heat storage technology.

Description

A wind-photoelectric-thermal complementary cold and hot water dual supply system

technical field

The utility model relates to the technical field of building energy supply, in particular to a wind-photoelectric-heat complementary cold and hot water dual supply system.

Background technique

In the process of renewable energy utilization, due to factors such as insufficient capacity of the local power grid, unmatched construction period of the power plant, and unstable wind power and photovoltaic power generation, some wind turbines and photovoltaic equipment have suspended power generation, or the generated power cannot be connected to the Internet. A series of policies and regulations to solve the problem of abandoning wind and light, but in reality, the phenomenon of abandoning wind and light has become more and more serious.

During the power generation process of solar photovoltaic modules, the optimum power generation temperature of photovoltaic modules is 25~30℃, which is higher than the optimum temperature, and the power generation efficiency is inversely proportional to the module temperature. In summer, it can be close to 80°C, which has a great impact on the power generation efficiency. In the hot sun, some parts of the solar photovoltaic panel can reach as high as 80°C, and it can drop to 15°C at midnight. The temperature difference between day and night is too large, resulting in thin , Smaller solar panels are prone to breakage, and these defects have greatly limited the efficient use of solar energy.

The air source heat pump uses air as a cold and heat source, and is driven by a small amount of high-grade electric energy to utilize low-grade energy. It is an energy-saving and environmentally friendly energy utilization method. Under the thermal condition, the higher the outlet water temperature, the lower the compressor current, and the lower the COP value, so the power consumption is higher. Under the cooling condition, with the increase of the outlet water temperature, the unit COP value increases linearly.

Utility model content

The purpose of the utility model is to combine the advantages of the prior art and overcome the disadvantages thereof, and to provide a wind-photoelectric-heat complementary cold and hot water dual supply system.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A wind-photovoltaic-thermal complementary cold and hot water dual supply system includes a solar photovoltaic photothermal system, a wind-solar complementary power generation system, and a heat pump-water tank cold storage and thermal storage system, wherein the solar photovoltaic photothermal system includes a solar collector, a solar photovoltaic a power generation assembly and a photothermal module arranged on the back of the photovoltaic power generation assembly;

The wind-solar hybrid power generation system regulates and controls the electric energy generated by the wind turbine and the solar photovoltaic power generation component, including the wind turbine, the solar photovoltaic power generation component, the wind-solar hybrid controller, the battery pack and the inverter;

The heat pump-water tank cold storage and heat storage system produces high-temperature cold water as cooling water, transfers the cold energy in the water tank to the building for cooling or is used to produce low-temperature hot water and stores it in the cold storage/hot water tank to transfer the heat in the water tank To the building as domestic hot water or heating, including air source heat pump unit, water-water heat exchanger I, hot water storage tank, cold storage/hot water tank, water-water heat exchanger II and water source heat pump unit.

Further, the positive and negative transmission lines of the wind turbine and the positive and negative transmission lines of the solar photovoltaic power generation component are respectively electrically connected to the fan input terminal and the photovoltaic input terminal on the wind-solar hybrid controller, so The battery output terminals on the wind-solar hybrid controller are electrically connected to the positive and negative poles of the battery pack, and the inverter output terminals are electrically connected to the positive and negative poles of the inverter. The wind-solar hybrid controller can generate electricity from wind power. The electric energy generated by the machine and the solar photovoltaic power generation module is regulated and controlled.

Further, the solar photovoltaic power generation assembly includes: a photovoltaic cell panel, a first glass cover, and the photothermal module includes a first hot water pipe and a first water collecting pipe; the first hot water pipe is evenly distributed on the back of the solar photovoltaic cell panel , the two ends of the first hot water pipe are connected to the first water collection pipe, and the two first water collection pipes are connected to the water-water heat exchanger I, and the power is provided by the circulating water pump.

Further, the solar heat collector includes: a frame, a second glass cover, a heat absorbing body, a second hot water pipe, a thermal insulation layer, and a second water collection pipe, and both ends of the second hot water pipe are connected to the second water collection pipe, The two second water collecting pipes are also connected with the water-water heat exchanger I, and the power is provided by the circulating water pump.

Further, the left inlet and outlet of the hot water storage tank are respectively connected with the right inlet and outlet of the water-water heat exchanger I, and are powered by a circulating water pump; the right inlet and outlet are respectively connected to the water-water heat exchanger I. The left inlet and outlet of water heat exchanger II are connected, and the power is provided by the circulating water pump; the right inlet and outlet of the water-water heat exchanger II are respectively connected with the building hot water pipe, and the power is provided by the circulating water pump.

Further, the air source heat pump unit is electrically connected to the inverter; the water inlet and outlet of the air source heat pump unit extend into the cold storage/hot water tank through water pipes;

Further, the water source heat pump unit is electrically connected to the inverter; the water source side water inlet and outlet of the water source heat pump unit are connected to the cold storage/hot water tank, and the user side water inlet and outlet are connected to the building cold and hot water pipes, which are provided by a circulating water pump. Power, in which valves I and II are installed on the heating and heating return pipes, respectively, and valves III and IV are respectively installed on the cooling and cooling return pipes, which are used to switch the water source heat pump unit to produce cold and hot water for the building to provide cooling. , heat load.

Further, in the cooling season, valve I and valve II are closed, and the water-water heat exchanger is directly used to extract the heat in the hot water storage tank for building domestic hot water, and the cold storage/hot water tank is used to store the air source heat pump. Valve III and valve IV are opened for the high temperature cold water generated by the unit, and the water source heat pump unit uses the high temperature cold water in the cold storage/hot water tank as cooling water to prepare chilled water for building refrigeration.

Further, in the non-cooling season, valve III and valve IV are closed, valve I and valve II are open, the air source heat pump unit produces low-temperature hot water and stores it in the cold storage/hot water tank, and the heat in the water tank is transferred through the water source heat pump unit. into the building as domestic hot water or heating.

Further, the domestic hot water is connected to the hot water inlet and outlet of the indoor shower hot and cold faucet, the cold and hot water faucet of the wash basin, and the hot and cold water faucet of the vegetable basin, and the heating end is a radiator heating system or a low-temperature floor radiant heating system, The cooling end of the building is a fan coil unit.

Compared with the prior art, the utility model has the following beneficial effects:

1. Wind power generation and photovoltaic power generation resources are fully utilized through the wind and solar complementary controller. On the one hand, the stable DC power of wind power generation is converted into AC power through the inverter and fed into the power grid for load use; on the other hand, the surplus power that cannot be integrated into the power grid is passed through The inverter runs the air source heat pump unit and the water source heat pump unit. After the battery pack is fully charged, the controller needs to control it not to be overcharged. When the power generated cannot meet the load demand, the controller sends the electric energy of the battery pack to the load. When the electric energy stored in the battery pack is discharged, the controller should control it not to be over-discharged;

2. In the cooling season, use the air source heat pump unit to produce high-temperature cold water as cooling water and store it in the cold storage/hot water tank, and then transfer the cold energy in the water tank to the building for cooling through the water source heat pump unit. The source heat pump unit produces low-temperature hot water and stores it in the cold storage/hot water tank, and transfers the heat in the water tank to the building as domestic hot water or heating through the water source heat pump unit. At this time, the COP values of the air source heat pump unit and the water source heat pump unit are both higher, which is conducive to energy saving and emission reduction.

3. Hot water pipes are evenly distributed on the back of the photovoltaic panels in the solar photovoltaic power generation module. Both ends of the hot water pipes are connected to water collection pipes. The two water collection pipes are connected to the water-water heat exchanger I, and the photovoltaics are taken away by the circulating flow of the heat exchange medium in the pipes. The heat on the surface of the panel keeps the surface temperature at the optimal power generation temperature, thereby improving the power generation efficiency. Considering that the heat generated by the solar photovoltaic power generation module is less than can meet the building's domestic hot water supply, increase the solar collector to collect solar heat, Improve solar energy utilization;

4. Connect the collected solar heat through water pipes to the water-water heat exchanger I and the circulating water of the hot water storage tank for heat exchange. The water-water heat exchanger is used to extract the heat in the water tank for domestic hot water use in the building. In the non-cooling season, the solar radiation intensity is low and the collected solar heat is small, and the heat in the hot water storage tank is low. , the water source heat pump unit can produce hot water for building use;

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the working principle diagram of the utility model refrigeration season;

Fig. 3 is the working principle diagram of the non-refrigeration season of the present utility model;

In the picture: 1-wind generator, 2-solar photovoltaic power generation module, 3-solar collector, 4-wind-solar hybrid controller, 5-battery pack, 6-inverter, 7-air source heat pump unit, 8- Water-water heat exchanger I, 9-hot water storage tank, 10-cold storage/hot water tank, 11-water-water heat exchanger II, 12-water source heat pump unit, 13-valve I, 14-valve II, 15 -Valve III, 16 valve IV.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments of the present invention are some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The utility model will be further described below in conjunction with the accompanying drawings.

Referring to Figure 1, the utility model provides a wind-photovoltaic-thermal complementary cold and hot water dual supply system, including a wind-solar complementary power generation system, a solar photovoltaic photothermal system, and a heat pump-water tank cold storage and heat storage system. The two power transmission lines are electrically connected to the fan input terminals on the wind-solar hybrid controller 4, and the positive and negative power transmission wires of the solar photovoltaic power generation component 2 are electrically connected to the photovoltaic input terminals on the wind-solar hybrid controller 4, and the wind-solar hybrid controller 4 is electrically connected. The battery output terminals on 4 are electrically connected with the positive and negative poles of the battery pack 5, and the inverter output terminals on the wind-solar hybrid controller 4 are electrically connected with the positive and negative poles of the inverter 6 to form a wind-solar hybrid power generation system. And the wind-solar hybrid controller 4 can adjust and control the electric energy generated by the wind turbine 1 and the solar photovoltaic power generation component 2. On the one hand, the stable direct current of the wind and solar power generation is converted into alternating current through the inverter 6 and then fed into the power grid for use by the load. On the other hand, run the air source heat pump unit 7 and the water source heat pump unit 12 with the surplus power that cannot be integrated into the power grid through the inverter 6, and at the same time charge the battery pack 5 according to the characteristic curve of the battery pack 5 for use by the load; the solar photovoltaic power generation module It includes: a photovoltaic cell panel, a first glass cover, a first hot water pipe, and a first water collection pipe; the first hot water pipe is evenly distributed on the back of the solar photovoltaic cell panel, and both ends of the first hot water pipe are connected to the first water collection pipe , the solar collector 3 includes: a frame, a second glass cover, a heat sink, a second hot water pipe, a thermal insulation layer, and a second water collection pipe. In the above embodiment, the first water collection pipe and the second water collection pipe Both are connected with water-water heat exchanger I8.

The hot water storage tank 9, its left inlet and outlet are connected to the right inlet and outlet of the water-water heat exchanger I8 respectively, and are powered by a circulating water pump; its right inlet and outlet are respectively connected to the water-water exchange The left inlet and outlet of Heater II11 are connected, and the power is provided by the circulating water pump; the right inlet and outlet of the water-water heat exchanger II11 are respectively connected with the building hot water pipe, and the power is provided by the circulating water pump; the air source heat pump unit 7 and the water source heat pump unit 12 are respectively electrically connected to the inverter 6; the water inlet and outlet of the air source heat pump unit 7 extend into the cold storage/hot water tank 10 through water pipes; the water source side water inlet and outlet of the water source heat pump unit 12 are connected to the cold storage/heat storage In the water tank 10, the user-side water inlet and outlet are connected to the building's cold and hot water pipes, and the power is provided by the circulating water pump. Valves 13 and 14 are respectively installed on the heating and heating return pipes, and the cooling and cooling return pipes are respectively installed. Install valve 15 and valve 16 to switch the water source heat pump unit to produce cold and hot water to provide cooling and heating loads for the building.

Referring to Figure 2, in the cooling season, valve I13 and valve II14 are closed, the intensity of solar radiation is strong, and the heat in the hot water storage tank is relatively high. The water-water heat exchanger 11 is directly used to extract the heat in the hot water storage tank 9. It is used for building domestic hot water. The cold storage/hot water tank 10 is used to store the high temperature cold water of about 15°C produced by the air source heat pump unit 7. The high temperature cold water is used as cooling water to prepare chilled water for building refrigeration;

Referring to Figure 3, in the non-cooling season, valve III15 and valve IV16 are closed, valve I13 and valve II14 are open, the solar radiation intensity is low, and the collected solar heat is small, the heat in the hot water storage tank 9 is low, and the air source heat pump unit 7. Prepare low-temperature hot water at about 35°C and store it in the cold storage/hot water tank 10, and transfer the heat in the water tank to the building through the water source heat pump unit 12 as domestic hot water or heating;

The domestic hot water pipe is connected to the hot water inlet and outlet of the indoor shower hot and cold faucet, the cold and hot water faucet of the wash basin, and the cold and hot water faucet of the vegetable basin. Tube.

To sum up, a wind-photoelectric-thermal complementary cold and hot water dual supply system in the present invention combines the advantages of solar photovoltaic, solar-thermal, wind power, heat pump and water tank to complement each system, make up for the defects of each system, and make the system It can simultaneously generate domestic hot water while satisfying refrigeration, and the COP value of the heat pump unit is also high, which greatly improves the energy utilization efficiency of the system. By combining heat pump technology with renewable energy utilization technology and energy storage and heat storage technology, it can provide electricity, domestic hot water, heating and cooling for buildings at the same time, and use renewable energy for large-scale energy storage and heat storage in areas with hot summer and cold winter. New ways to build low-carbon communities.

The above-mentioned embodiments merely describe the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Under the premise of not departing from the design concept of the present invention, various modifications and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention, and the technology claimed by the present invention shall be protected. The content has been fully described in the claims.

Claims (10)

1. The utility model provides a complementary formula hot and cold water dual supply system of scene electric heat which characterized in that: the solar photovoltaic photo-thermal system comprises a solar photovoltaic photo-thermal system, a wind-light complementary power generation system and a heat pump-water tank cold and heat storage system, wherein the solar photovoltaic photo-thermal system comprises a solar thermal collector (3), a solar photovoltaic power generation assembly (2) and a photo-thermal module arranged on the back of the photovoltaic power generation assembly (2);

the wind-solar complementary power generation system regulates and controls the electric energy generated by the wind driven generator (1) and the solar photovoltaic power generation assembly (2), and comprises the wind driven generator (1), the solar photovoltaic power generation assembly (2), a wind-solar complementary controller (4), a storage battery pack (5) and an inverter (6);

the heat pump-water tank cold and heat accumulation system is used for preparing high-temperature cold water as cooling water to transfer cold energy in a water tank to a building for cold supply or preparing low-temperature hot water to be stored in a cold and heat accumulation/hot water tank to transfer heat in the water tank to the building as domestic hot water or heat supply, and comprises an air source heat pump unit (7), a water-water heat exchanger I (8), a heat accumulation water tank (9), a cold and heat accumulation/hot water tank (10), a water-water heat exchanger II (11) and a water source heat pump unit (12).

2. The wind-solar-electric-heating complementary cold-hot water dual-supply system according to claim 1, wherein positive and negative two power transmission lines of the wind-driven generator (1) and positive and negative two power transmission lines of the solar photovoltaic power generation assembly (2) are respectively electrically connected with a fan input terminal and a photovoltaic input terminal on the wind-solar complementary controller (4), a storage battery output terminal on the wind-solar complementary controller (4) is electrically connected with a positive electrode and a negative electrode of the storage battery pack (5), an inverter output terminal is electrically connected with a positive electrode and a negative electrode of the inverter (6), and the wind-solar complementary controller (4) can regulate and control electric energy generated by the wind-driven generator (1) and the solar photovoltaic power generation assembly (2).

3. The wind, light and electricity complementary cold and hot water dual supply system according to claim 1, wherein the solar photovoltaic power generation assembly (2) comprises: the photovoltaic cell panel, the first glass cover plate and the photo-thermal module comprise a first hot water pipe and a first water collecting pipe; first hot-water line evenly distributed is at solar photovoltaic cell panel's back, and first collector pipe is connected at first hot-water line both ends, and two first collector pipes are connected with water-water heat exchanger I (8), provide power through circulating water pump.

4. A wind, light and electricity complementary cold and hot water dual supply system according to claim 1, wherein the solar heat collector (3) comprises: the frame, second glass apron, heat-absorbing body, second hot-water line, heat preservation, second collector pipe is connected at second hot-water line both ends, and two second collector pipes also are connected with water-water heat exchanger I (8), provide power through circulating water pump.

5. The wind, light and electric heating complementary type cold and hot water dual-supply system as claimed in claim 1, wherein the left side and the water outlet of the heat storage water tank (9) are respectively connected with the right side and the water outlet of the water-water heat exchanger I (8) and are powered by a circulating water pump; the right side inlet and the right side outlet of the water-water heat exchanger are respectively connected with the left side inlet and the left side outlet of a water-water heat exchanger II (11) and provide power through a circulating water pump; the right water inlet and the right water outlet of the water-water heat exchanger II (11) are respectively connected with a hot water main pipe of the building and provide power through a circulating water pump.

6. The wind, light and electricity and heat complementary type cold and hot water dual-supply system according to claim 1, wherein the air source heat pump unit (7) is electrically connected with the inverter (6); and the water inlet and the water outlet of the air source heat pump unit (7) extend into the cold/hot water tank (10) through a water pipe.

7. The wind-solar-electric-heat complementary cold-hot water dual supply system is characterized in that the water source heat pump unit (12) is electrically connected with the inverter (6); the water source side water inlet and outlet of the water source heat pump unit (12) is connected into the cold accumulation/hot water tank (10), the side water inlet and outlet of a user is connected into a cold water pipe and a hot water pipe of a building, power is provided through a circulating water pump, wherein a valve I (13) and a valve II (14) are respectively arranged on a heat supply water return pipe and a heat supply water return pipe, and a valve III (15) and a valve IV (16) are respectively arranged on the cold supply water return pipe and are used for switching the water source heat pump unit to prepare cold water and hot water to provide cold and hot loads for the building.

8. The wind, solar and electric heating complementary cold and hot water dual-supply system is characterized in that in a cooling season, a valve I (13) and a valve II (14) are closed, heat in a heat storage water tank (9) is directly extracted by a water-water heat exchanger II (11) to be used as hot water for life of a building, a cold/hot water tank (10) is used for storing high-temperature cold water generated by an air source heat pump unit (7), a valve III (15) and a valve IV (16) are opened, and a water source heat pump unit (12) takes the high-temperature cold water in the cold/hot water tank (10) as cooling water to prepare chilled water for refrigerating the building.

9. The wind, light and electricity and heat complementary type cold and hot water dual-supply system is characterized in that in non-refrigeration seasons, the valve III (15) and the valve IV (16) are closed, the valve I (13) and the valve II (14) are opened, the air source heat pump unit (7) is used for preparing low-temperature hot water and storing the low-temperature hot water in the cold storage/hot water tank (10), and heat in the water tank is transferred to a building through the water source heat pump unit (12) to be used as domestic hot water or for heating.

10. The wind, light and electricity and heat complementary type cold and hot water dual-supply system as claimed in claim 9, wherein the domestic hot water is connected with hot water inlet and outlet ports of an indoor shower cold and hot water faucet, a wash basin cold and hot water faucet and a wash basin cold and hot water faucet, the heating terminal is a radiator heating system or a low-temperature floor radiation heating system, and the building cooling terminal is a fan coil.

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