Energy storage type multi-energy cooling, heating and power system

Abstract

The utility model discloses an energy storage type multi-energy cooling, heating and power system, and relates to the technical field of cooling, heating and power supply. The energy storage type multi-energy cooling, heating and power system comprises a centrifugal screw unit, a cooling water pump, a chilled water pump, a heat exchange unit, a constant-pressure water replenishing unit, a water treater, an expansion water tank, a boiler of an underground station building, a primary circulating pump and a high-level water tank, the system comprises a roof PV / T photovoltaic, a ground source heat pump unit, a ground source side water pump, a user side water pump, a constant-pressure water supplementing unit, a water processor, an expansion water tank, a hot water storage device, a roof solar photovoltaic PV / T, a solar heat pump and a water storage tank. The conventional field construction and installation are improved into a modularized and integrated system which can be prefabricated in a factory, so that the system is efficient, energy-saving, time-saving and labor-saving, the utilization of a single energy source is changed into the energy storage and supply of multiple energy sources, and the stepped utilization of clean energy sources is completed by utilizing the most efficient control technical strategy and the refined management of use functions.

Description

Technical Field

[0001] The utility model relates to the technical fields of cooling, heating and power supply, and particularly relates to an energy storage type multi - energy cooling, heating and power generation system. Background Art

[0002] In the traditional cooling, heating and power supply system, the main equipment of the cooling and heat source system is purchased by the construction unit according to the preliminary design of the design institute. There is no specific targeting for the effective utilization of energy. The application of solar thermal / heat, photovoltaic technology, and ground - source heat pump technology in buildings is one of the important technical ways to promote the "dual - carbon action" in the current construction field, reduce the dependence on traditional fossil energy, and reduce carbon emissions. The renewable energy system puts forward clear indicators and requirements for solar energy utilization, ground - source heat pumps, etc. The combination of solar energy and buildings can not only reduce the energy consumption load of buildings, but also realize the transformation of buildings from a simple energy - consuming place to a "production - consumption" place, which has very practical significance for promoting low - carbon, carbon reduction, and achieving carbon neutrality. The actual operation of the traditional cooling and heat source and power supply systems shows that the traditional cooling and heat source and power supply systems have the following aspects:

[0003] 1. The traditional cooling and heat source and power supply systems have a large number of equipment, scattered yard layouts, and a large floor area;

[0004] 2. The traditional cooling and heat source and power supply systems are installed with equipment and pipelines on - site by different construction teams, with a long construction period, and the construction standards vary due to the inconsistent quality of construction personnel;

[0005] 3. The traditional cooling and heat source and power supply systems are designed once by each professional for the equipment, and the equipment selection is completed in different fields without fully considering the mutual matching of the equipment of each manufacturer. Therefore, the overall performance of the product cannot reach the best.

[0006] 4. There is no specific measurement for the energy demand of the community, and it is impossible to truly achieve the balance between supply and demand. Content of the Utility Model

[0007] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide an energy storage type multi - energy cooling, heating and power generation system, which can solve the problems that its installation is relatively troublesome when all installed on - site, and the energy use is not intelligent enough.

[0008] To achieve the above object, the utility model provides the following technical solutions: A storage-type multi-energy cold, heat and power system, including a ground source heating and cooling unit, a condensing module boiler heating unit, a centrifugal screw chiller unit, a solar power supply and heating unit, a heat storage and energy storage unit, and a user power consumption unit. The user power consumption unit is connected to the solar power supply and heating unit through the heat storage and energy storage unit, the user power consumption unit is connected to the ground source heating and cooling unit, the user power consumption unit is connected to the condensing module boiler heating unit, and the user power consumption unit is connected to the centrifugal screw chiller unit;

[0009] The centrifugal screw chiller, cooling water pump, chilled water pump, heat exchange unit, constant pressure make-up water unit, water treatment unit and expansion tank arranged in the steel structure, the boiler, primary circulation pump, high-level water tank in the underground substation; the ground source heat pump unit, ground source side water pump, user side water pump, constant pressure make-up water unit, water treatment unit and expansion tank, hot water storage device, rooftop solar PV / T, solar heat pump, water storage tank;

[0010] Among them, the centrifugal screw chiller is respectively connected to the cooling water pump and the chilled water pump through pipelines;

[0011] Among them, the heat exchange unit is connected to the water inlet of the primary circulation water pump in the boiler room, and is respectively connected to the water treatment unit, expansion tank and constant pressure make-up water unit through pipelines;

[0012] Among them, the centrifugal screw chiller and the heat exchange unit are respectively arranged at both ends of the steel structure frame, the cooling water pump and the chilled water pump are placed between the chiller and the heat exchange unit, a constant pressure make-up water unit and a water treatment unit are arranged between the expansion tank and the heat exchange unit, and the hot and cold are supplied through a manifold inside the steel structure;

[0013] Among them, the boiler room is located on the first basement floor, and is connected through pipelines. Heat is generated by the boiler combustion and sent to the first side of the plate heat exchanger through the primary circulation water pump;

[0014] Among them, the rooftop PV / T photovoltaic supplies power and heat;

[0015] Among them, the ground source heat pump unit is located on the first basement floor, supplies both heat and cold through the shallow ground source, and completes the comprehensive utilization of low, valley and peak electricity through the heat storage and cold storage water tank.

[0016] Preferably, the steel structure frame is composed of multiple sections of steel structure members assembled and connected.

[0017] Preferably, the cooling water pump and the chilled water pump are both connected to the steel structure frame by hoisting, and are connected to the pipeline by steel-to-steel connection.

[0018] Preferably, the solar power supply and heat, ground source heating and cooling, natural gas heating, and electric cooling are completed according to the actual environment of the project to complete the energy ratio distribution and achieve the hierarchical utilization of energy.

[0019] Preferably, the valley value of the residential building is utilized by solar power supply; by utilizing the valley value electricity, cold and heat storage is realized through electric refrigeration or ground source heating and cooling, and the peak electricity price function is provided to the end users.

[0020] Preferably, natural gas heating or electric refrigeration is used to realize the energy supply in harsh environments, completing the most stable foundation of multiple energy sources.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. The energy storage type multi - energy cold, heat and power system is improved from the previous on - site construction and installation to a modular and integrated system that can be pre - fabricated in the factory. It is energy - efficient, time - saving and labor - saving, and changes the utilization of single energy source to multi - energy storage and energy supply. It completes the hierarchical utilization of clean energy by using the most efficient control technology strategy and the refined management of the usage function. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present utility model will be further described below with reference to the drawings and embodiments:

[0024] Figure 1 It is a schematic plan view of the overall structure of the present utility model.

[0025] Reference numerals: 1. Ground source heating and cooling unit; 2. Condensing module boiler heating unit; 3. Centrifugal screw chiller unit; 4. Solar power supply and heating unit; 5. Heat storage and energy storage unit; 6. User electricity consumption unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] This part will describe the specific embodiments of the present utility model in detail. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present utility model.

[0028] In the description of the present utility model, terms such as "greater than", "less than", "exceeding", etc. are understood not to include the corresponding number, while terms such as "above", "below", "within", etc. are understood to include the corresponding number. If the terms "first" and "second" are described, they are only used to distinguish technical features and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or the sequence of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0030] Please refer to Figure 1 , the present utility model provides a technical solution: a storage-type multi-energy cooling, heating and power system, including a ground source heating and cooling unit 1, a condensing module boiler heating unit 2, a centrifugal screw chiller unit 3, a solar power supply and heating unit 4, a heat storage and energy storage unit 5, and a user power consumption unit 6. The user power consumption unit 6 is connected to the solar power supply and heating unit 4 through the heat storage and energy storage unit 5, the user power consumption unit 6 is connected to the ground source heating and cooling unit 1, the user power consumption unit 6 is connected to the condensing module boiler heating unit 2, and the user power consumption unit 6 is connected to the centrifugal screw chiller unit 3.

[0031] The module integration is to fix all devices on a steel structure frame with length and width limitations. The steel structure frame can bear the weight of each component; the steel structure frame can be divided into multiple sections for assembly connection, reducing the problem of equipment entry caused by the small entrance of the pump room; the entire unit of the steel structure frame forms an integrated module, and can fix the position of the pipeline and support the weight of the pipeline, reducing the production of fixed brackets for the pipeline in the entire pump room.

[0032] Based on the module integration, two-dimensional layout is used to reasonably layout each device to make rational use of the machine room space. All devices are compactly and reasonably arranged within the frame:

[0033] The present utility model forms a prefabricable ground source heat pump machine room through integration and modularization, customized boiler room design, integrated cold and heat source structure, and integrated solar photovoltaic unit. Compared with the traditional design, it can save one-third of the floor area, space and materials; and due to the compact structure, the unit is also convenient for installation and overall management.

[0034] Technical analysis of solar power supply and heating

[0035] The annual solar radiation in Xi'an is 5016 - 5852 MJ / ㎡·year, 1393 - 1625 kwh / ㎡·year, the annual sunshine hours are 2200 - 3000, and the average annual sunshine time (hours) under standard sunlight is 3.8 - 4.45 / d. The annual solar radiation is 4190 - 5016 MJ / ㎡·year, 1163 - 1393 kwh / ㎡·year, the annual sunshine hours are 1400 - 2200, and the average annual sunshine time (hours) under standard sunlight is 3.1 - 3.8 / d.

[0036] Calculated according to the design manual:

[0037] The requirement for domestic hot water consumption: 60-degree hot water, 80L per person per day, about 250L per household.

[0038] The maximum electrical load per household in the residence: for a household building area less than 120㎡, 8KW; for a household building area of 120 - 150㎡, 12KW; for a household building area of 150 - 200㎡, 16KW. The electricity consumption per household per month in Jiangsu Province: 100w.

[0039] The electrical load of public areas: 5kw for the public lighting of each unit, 12kw for the elevator, 5kw for the floodlighting of each building, and the daily electricity consumption is about 32.5KWh. The annual electricity consumption required for the public parts of three units is 35587.5KWh.

[0040] The satisfaction degree of solar thermal energy can meet 75% of the hot water demand. The annual energy savings can be: 2200KWh, and the required daylighting area is: 4 square meters.

[0041] The energy supply capacity of the rooftop PV system: in addition to meeting the daily normal electricity consumption of each household, the surplus electricity is stored and sold to the urban grid.

[0042] Example: There are 54 households in the slab building. According to the average of 100KWh per household per month, the annual electricity consumption required per household is 1200KWh, and the total annual electricity consumption of 54 households is 64800KWh.

[0043] The public lighting of each unit is 5kw, the elevator is 12kw, and the floodlighting of each building is 5kw. The daily electricity consumption is about 32.5KWh. The annual electricity consumption required for the public parts of three units is 35587.5KWh.

[0044] The annual electricity consumption of 54 households and the public lighting of three units is 100387.5KWh.

[0045] 54 households each install 2 pieces of 600Wp photovoltaic modules, with a total of 108 pieces of 600Wp photovoltaic modules installed, and the installed capacity is 64.8KWp. A total of 57 pieces of 600Wp photovoltaic modules are installed in 3 public units, with an installed capacity of 34.2KWp. A total of 165 photovoltaic modules are installed on the roof of the model building, with a total installed capacity of 99KWp of photovoltaic. The first-year power generation of 99KWp of photovoltaic is 111,957KWh, and the average annual power generation in 25 years is 104,568KWh, which meets the demand for the annual electricity consumption of 100,387.5KWh of the model building and can achieve "electricity balance".

[0046] Since photovoltaic power generation is during the day and residential electricity consumption is mostly at night, a 3KW / 5KW household energy storage system is equipped, and the "photovoltaic + energy storage" mode is adopted. All residential electricity consumption uses the green energy generated by the photovoltaic system (photovoltaic self-generation and self-use), realizing carbon neutrality for residential electricity consumption.

[0047] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A storage-type multi-energy cooling, heating and power system, characterized in that Including: A soil source heating and cooling unit (1), a condensing module boiler heating unit (2), a centrifugal screw unit cooling unit (3), a solar power supply and heating unit (4), a heat storage and energy storage unit (5), and a user power consumption unit (6). The user power consumption unit (6) is connected to the solar power supply and heating unit (4) through the heat storage and energy storage unit (5), the user power consumption unit (6) is connected to the soil source heating and cooling unit (1), the user power consumption unit (6) is connected to the condensing module boiler heating unit (2), and the user power consumption unit (6) is connected to the centrifugal screw unit cooling unit (3); A centrifugal screw unit, a cooling water pump, a chilled water pump, a heat exchange unit, a constant pressure make-up water unit, a water treatment unit, and an expansion tank arranged in a steel structure, a boiler, a primary circulation pump, and a high-level water tank in an underground station building; a ground source heat pump unit, a ground source measuring water pump, a user-side water pump, a constant pressure make-up water unit, a water treatment unit, an expansion tank, and a hot water storage device, a rooftop solar PV / T, a solar heat pump, and a water storage tank; Among them, the centrifugal screw unit is connected to the cooling water pump and the chilled water pump through pipelines respectively; Among them, the heat exchange unit is connected to the water inlet of the primary circulation water pump in the boiler room and is connected to the water treatment unit, the expansion tank, and the constant pressure make-up water unit through pipelines respectively; Among them, the centrifugal screw unit and the heat exchange unit are respectively arranged at both ends of the steel structure frame, the cooling water pump and the chilled water pump are placed between the chiller and the heat exchange unit, a constant pressure make-up water unit and a water treatment unit are arranged between the expansion tank and the heat exchange unit, and the hot and cold are supplied through a manifold inside the steel structure; Among them, the boiler room is located on the first basement floor and is connected through pipelines. Heat is generated by the boiler combustion and is sent to the primary side of the plate heat exchanger through the primary circulation water pump; Among them, the rooftop PV / T photovoltaic generates power and heat; Among them, the ground source heat pump unit is located on the first basement floor, provides both heating and cooling through the shallow soil source, and completes the comprehensive utilization of low, valley, and peak electricity through the heat storage and cold storage water tank.

2. The energy storage type multi - energy cooling, heating and power system according to claim 1, wherein: The steel structure frame is composed of multiple sections of steel structure members assembled and connected.

3. The energy storage type multi - energy cooling, heating and power system according to claim 1, characterized in that: Both the cooling water pump and the chilled water pump are connected to the steel structure frame in a hoisting manner and are connected to the pipelines in a steel-to-steel connection manner.

4. A multi - energy cold, heat and power storage system according to claim 1, characterized in that: According to the actual environment of the project, complete the energy ratio distribution of solar power supply and heating, soil source heating and cooling, natural gas heating, and electric cooling, and realize the echelon utilization of energy.

5. The energy storage type multi - energy cooling, heating and power system according to claim 4, wherein: Use solar power supply to complete the valley electricity consumption of residential buildings; use valley electricity, and realize the storage of heat and cold through electric refrigeration or soil source heating and cooling, and supply it to end users during peak electricity price periods.

6. A multi - energy cold - heat - power storage system according to claim 4, characterized in that: Use natural gas heating or electric refrigeration to realize the energy supply in harsh environments and complete the most stable foundation of multiple energies.

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