CN218455287U - Step heat energy utilization device - Google Patents
Step heat energy utilization device Download PDFInfo
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- CN218455287U CN218455287U CN202222498103.8U CN202222498103U CN218455287U CN 218455287 U CN218455287 U CN 218455287U CN 202222498103 U CN202222498103 U CN 202222498103U CN 218455287 U CN218455287 U CN 218455287U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The application relates to a step heat energy utilization device, which comprises a shell, a heat exchanger and a heat exchanger, wherein the shell is provided with an installation space; the step heat storage section is provided with a plurality of heat storage sections, is arranged in the installation space of the shell and is used for storing water with different temperatures; the photovoltaic electric heating system comprises a photovoltaic power generation system and an electric heater, wherein the electric heater is arranged in the heat storage section and is connected with the photovoltaic power generation system; and the air source heat pump unit is communicated with the at least one heat storage section. The utility model discloses based on photovoltaic power generation system coupling heat pump heats, realized can improving heat energy utilization efficiency at renewable energy's step utilization.
Description
Technical Field
The utility model relates to a heat-retaining equipment technical field, concretely relates to step heat utilization equipment.
Background
At present, the supply of concentrated domestic hot water emphasizes the comfort, stability, reliability and continuity of water supply; meanwhile, energy conservation, greenness and low carbon are also required to be considered; the traditional solar water heating system adopts a photo-thermal system, the system needs to overcome the series problems of pressure bearing, overheating, pipe explosion, freezing prevention, scaling and the like of the liquid of a heat collecting pipe, the management cost is high, the design life cannot be reached far, and the building engineering generally contradicts solar photo-thermal utilization.
The existing centralized domestic hot water heating needs renewable energy sources such as solar energy, a heat pump and the like, and due to the characteristics of instability, low density and the like of the renewable energy sources, a heat storage box with large volume is usually adopted to store the heat energy of the renewable energy sources so as to meet the requirement of supplying hot water at night or in a peak period. The following problems exist in the engineering application of the heating and heat storage system:
1. the existing centralized solar hot water heating system needs a huge heat storage box; the system needs to be prevented from overheating, freezing in cold regions needs to be prevented, safety measures such as explosion prevention and the like need to be set, the system is complex, and maintenance and management costs are high.
2. The open type heat storage box body has hidden danger of water pollution, the open type box body can not fully utilize the water pressure of primary cold water, hot water needs to be pressurized again, great energy waste exists, and meanwhile, the cold water pressure and the hot water pressure are different, so that the open type heat storage box body has the problem that the open type heat storage box body is not beneficial to pressure balance.
3. If the closed heat storage box is adopted, the heat storage box is large in size and bulky, occupies a large space of a machine room, and has the phenomena of water stagnation of cold water and warm water and bacterial growth. The engineering installation is difficult, and the maintenance and management cost is higher.
4. In order to ensure the stability of heat supply, the temperature of the stored water in the heat storage tank needs to be kept above 50 ℃ for a long time. The general solar photo-thermal system and the heat pump system are in parallel connection, are interfered with each other, have low utilization rate and are particularly obvious in winter.
5. The solar photo-thermal system is complex, the engineering difficulty of overheat prevention, solarization prevention, freezing prevention and the like is high, and the management cost is high.
6. Conventional heat storage tanks are highly constrained and cannot effectively utilize temperature stratification. Under low-load working conditions such as night, the heat storage system still keeps a high-temperature state, and large heat dissipation loss exists.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing, the present invention is directed to a step heat energy utilization device for solving one or more of the above problems in the prior art.
The purpose of the utility model is realized like this:
a stepped thermal energy utilization device, comprising:
a housing having an installation space;
the step heat storage section is provided with a plurality of heat storage sections, is arranged in the installation space of the shell and is used for storing water with different temperatures;
the photovoltaic electric heating system comprises a photovoltaic power generation system and an electric heater, wherein the electric heater is arranged in the heat storage section and is connected with the photovoltaic power generation system;
and the air source heat pump unit is communicated with the at least one heat storage section.
The solar water heater further comprises a central controller, wherein the central controller is used for controlling the photovoltaic power generation system and municipal power to heat water in the heat storage sections and controlling each heat storage section to provide hot water for the load heat utilization mechanism.
Furthermore, a heat insulation layer is arranged in the installation space of the shell and surrounds the step heat storage section.
Further, the photovoltaic power generation system comprises a solar photovoltaic panel, and the solar photovoltaic panel is arranged at the top of the shell.
Further, the electric heater is a 24V direct current heating rod and is connected with the solar photovoltaic panel through a lead.
Further, the heater is also connected to municipal power via a transformer.
Furthermore, the step heat storage section comprises a high-temperature heat storage section, a medium-temperature heat storage section and a low-temperature heat storage section which are sequentially communicated, the high-temperature heat storage section, the medium-temperature heat storage section and the low-temperature heat storage section respectively comprise a plurality of independent and communicated heat storage tanks, and the heat storage tanks are communicated through connecting pipes.
Furthermore, the device also comprises a high-temperature disinfection pipeline, and a disinfection device is arranged on the disinfection pipeline; one end of the high-temperature disinfection pipeline is connected with the high-temperature heat storage section, and the other end of the high-temperature disinfection pipeline is connected with the low-temperature heat storage section; when high-temperature disinfection is needed, a fluid circulation path is formed by the high-temperature heat storage section, the medium-temperature heat storage section, the low-temperature heat storage section and the high-temperature disinfection pipeline, and the temperature of hot water in the system is raised to be above 60 ℃ by using an air source heat pump unit or photovoltaic electric heating; the fluid circulation path is provided with a hot water circulation pump for providing power for the fluid circulation.
Furthermore, the shell is provided with a first installation space and a second installation space, and the high-temperature heat storage section, the medium-temperature heat storage section and the low-temperature heat storage section are integrally arranged in the first installation space; and the second installation space is internally provided with an external pipeline network, an air source heat pump unit, a hot water circulating pump, a central controller and a disinfection device.
Furthermore, a constant-temperature water mixing valve and a heat meter are also arranged on the pipeline network.
Furthermore, an expansion tank is further installed in the second installation space and connected to the pipeline network.
Compared with the prior art, the utility model provides a step heat utilization equipment has replaced the solar photothermal system by photovoltaic electric heating system, heats based on photovoltaic power generation system coupling heat pump, has not only overcome the problem of traditional photothermal system and heat pump system interference of each other, has realized the step utilization of photovoltaic power generation heating with the heat pump heating, improves the heat energy utilization efficiency of heat storage system moreover to reduce heat loss, the reduction engineering combined cost of heat storage system.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic control logic diagram of the step heat energy utilization device of the present invention;
FIG. 2 is a schematic structural view of the step heat energy utilization device of the present invention
Fig. 3 is a schematic layout view of the internal heat storage tank of the step heat energy utilization device of the present invention.
Reference numerals:
1-a photovoltaic power generation system; 2-municipal power; 3-heat pump circulation pump; 4-high temperature heat storage section; 5-medium temperature heat storage section; 6-low temperature heat storage section; 7-air source heat pump unit; 8-hot water circulating pump; 9-a central controller; 10-a sterilizing device; 11-a constant temperature water mixing valve; 12-a heat meter; 13-an expansion tank; 14-a sewage draining outlet; 15-a housing; 16-an insulating layer; 17-mounting a base; 18-a heat storage tank; 19-a connecting tube; 20-cold water supply.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The terms "top," "bottom," "at 8230; \8230; above," "below," and "at 8230; above" are used throughout the description to refer to the relative positions of the components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, independent of their orientation in space.
The utility model discloses a concrete embodiment, as shown in fig. 1 to fig. 2, discloses a step heat utilization equipment, include:
a housing 15 having an installation space;
a stepped heat storage section having a plurality of heat storage sections integrally provided in an installation space of the housing 15 for storing water of different temperatures;
the photovoltaic electric heating system comprises a photovoltaic power generation system 1 and an electric heater, wherein the electric heater is arranged in the heat storage section and is connected with the photovoltaic power generation system 1;
and the air source heat pump unit 7 is communicated with at least one heat storage section through the heat pump circulating pump 3 and is used for heating hot water in the heat storage section.
In this embodiment, the step heat storage section includes a high temperature heat storage section 4, a medium temperature heat storage section 5, and a low temperature heat storage section 6, which are sequentially connected, the high temperature heat storage section 4, the medium temperature heat storage section 5, and the low temperature heat storage section 6 are connected by a connection pipe 19, and a plurality of valves are disposed on the connection pipe 19 to control the connection state of different positions on the connection pipe 19, as shown in fig. 3. The high-temperature heat storage section 4, the medium-temperature heat storage section 5 and the low-temperature heat storage section 6 respectively comprise a plurality of independent and communicated heat storage tanks 18, the heat storage tanks 18 are communicated through connecting pipes 19, the plurality of heat storage tanks are divided into high-temperature heat storage sections, medium-temperature heat storage sections and low-temperature heat storage sections which are communicated with one another to form a step heat storage tank, the heat storage tanks realize step energy storage of heat energy by utilizing gradient change of water temperature, and hot water in the high-temperature heat storage sections is preferentially utilized. The step water storage space is constructed by adopting a plurality of independently arranged heat storage tanks, and the heat storage tanks are small in size and easy to produce, install and maintain. Illustratively, the high temperature heat storage section 4 includes two heat storage tanks 18, the medium temperature heat storage section 5 includes three heat storage tanks 18, and the low temperature heat storage section 6 includes two heat storage tanks 18, each having a volume of 1 to 2m 3 。
In this embodiment, the step heat energy device further comprises a high temperature disinfection pipeline, a disinfection device is arranged on the disinfection pipeline, optionally, the disinfection device is an AOT hot water disinfection device, one end of the high temperature disinfection pipeline is connected with the high temperature heat storage section 4, and the other end of the high temperature disinfection pipeline is connected with the low temperature heat storage section 6; when high-temperature disinfection is needed, a fluid circulation path is formed by the high-temperature heat storage section 4, the medium-temperature heat storage section 5, the low-temperature heat storage section 6 and the high-temperature disinfection pipeline, and the temperature of hot water in the system is raised to be above 60 ℃ by using the air source heat pump unit 7 and/or photovoltaic electric heating, so that the technical requirement of high-temperature disinfection is met; a hot water circulation pump 8 is provided in the fluid circulation path to provide power for the fluid circulation. Wherein, hot water circulating pump 8 has the vent that is used for the heat dissipation, is equipped with the filter screen on the vent to prevent that the mosquito from getting into. Under the high-temperature disinfection state, the commercial power heat source is communicated with the low-temperature heat storage section to heat water in the low-temperature heat storage section, the low-temperature heat storage section is sequentially communicated with the medium-temperature heat storage section and the high-temperature heat storage section, and hot water in the system circularly flows through the disinfection pipeline, so that circular disinfection is realized.
In this embodiment, the shape of the housing 15 may be a regular shape, such as a square shape, a trapezoid shape, or the like, and the housing 15 may also be designed to be an irregular shape according to actual site conditions.
In one of the alternative embodiments, the housing 15 has a first installation space and a second installation space, and the high-temperature heat storage section 4, the medium-temperature heat storage section 5 and the low-temperature heat storage section 6 are integrally arranged in the first installation space; an external pipeline network, an air source heat pump unit 7, a hot water circulating pump 8 and a disinfection device 10 are arranged in the second installation space. The water outlet arranged on the pipeline network is communicated with the heat mechanism for the load through a water return pipeline.
Further, an insulating layer is arranged in the installation space of the shell 15, and the insulating layer is arranged around the step heat storage section. Specifically, the heat insulation layer 16 is arranged outside the first installation space of the shell 15, the heat insulation layer 16 is formed between the heat storage tank and the inner wall of the shell 15 through a rubber foaming process, and the thickness of the heat insulation layer is not less than 50mm.
In one of the alternative embodiments, the heat storage tanks 18 are arranged vertically on the mounting base 17, and the axes of the heat storage tanks 18 are parallel to each other. By adopting the structural arrangement mode, the structures of the plurality of heat storage tanks 18 are more compact, and the whole volume of the device is reduced.
In this embodiment, the pipeline network is provided with a thermostatic mixing valve 11 and a heat meter 12, the pipeline network is provided with cold water supply 20, the thermostatic mixing valve 11 can adjust the temperature of the cold and hot water mixing water as required, and the heat meter 12 is used for recording heat data.
Furthermore, an expansion tank 13 is further installed in the second installation space, and a water outlet of the expansion tank 13 is connected to a pipeline network so as to ensure that the pressure of fluid in the system is stable.
In this embodiment, the step heat energy device is further provided with a drain outlet 14, and the drain outlet 14 is connected to the pipeline network through a drain pipeline. The internal pipeline and the heat storage tank of the step heat energy device are cleaned regularly, and sewage is discharged through a sewage discharge outlet.
In the embodiment, the electric related equipment and the wire and cable joint adopt sealing waterproof measures, and the waterproof performance grade is not lower than IP55.
In this embodiment, the step heat energy utilization device further comprises a central controller 9, the central controller 9 is installed in the second installation space of the housing, and the central controller 9 is used for controlling the photovoltaic power generation system and the municipal power to heat water in the heat storage sections and controlling each heat storage section to provide hot water for the load heat mechanism. Wherein, the electric energy that preferentially adopts photovoltaic power generation system 1 to provide heats the water in the step heat storage section, and preferentially provides the hot water of high temperature to the heat mechanism for the load.
In this embodiment, temperature probes are arranged in the high-temperature heat storage section 4, the medium-temperature heat storage section 5 and the low-temperature heat storage section 6, and the temperature probes are connected with the central controller 9. The central controller 9 detects the temperatures of the high, medium and low temperature heat storage sections respectively in real time through temperature probes; the central controller monitors the temperature of a water return pipeline of the load heat utilization mechanism in real time through the temperature probe, the load heat utilization mechanism is communicated with the medium-temperature heat storage section 5 through the water return pipeline, and the central controller detects the temperature of the position of the water outlet of the system in real time through the temperature probe.
In the embodiment, the temperature of the high-temperature water stored in the high-temperature heat storage section 4 is 50-65 ℃, the temperature of the medium-temperature water stored in the medium-temperature heat storage section 5 is 45-50 ℃, and the temperature of the low-temperature water stored in the low-temperature heat storage section 6 is 40-45 ℃; when the hot water in the heat storage tank at the temperature of less than 45 ℃ is heated by the air source heat pump unit, the hot water at the temperature of more than 45 ℃ is heated by photovoltaic electricity, so that the gradient utilization of the heat energy of the renewable energy sources is realized. Gradient change of water temperature of different heat storage sections is utilized to realize gradient energy storage of heat energy, high-temperature hot water is preferentially utilized, and the water temperature difference between the high-temperature heat storage section and the low-temperature heat storage section is about 10 ℃.
Optionally, the air source heat pump unit 7 is further connected with municipal power. The start and stop of the air source heat pump unit 7 are controlled by the temperature of the heat storage tank and the management time, the air source heat pump unit is started at regular time, and when the temperature of the heat storage tank is more than or equal to 50 ℃, the air source heat pump unit stops running.
In the embodiment, the photovoltaic power generation system 1 comprises various photovoltaic systems suitable for being installed on the roof and the ground of a building, and the photovoltaic system is adopted to directly drive the air source heat pump unit in hot summer and warm winter to prepare domestic hot water; other building climate partitions adopt photovoltaic direct heating and are coupled with a heat pump to heat hot water in a stepped mode. The photovoltaic power generation system comprises a solar photovoltaic panel, and the solar photovoltaic panel is arranged at the top of the shell.
In the embodiment, the electric heater is a 24V direct current heating rod, and the heater is connected with the solar photovoltaic panel through a lead and is heated by direct current; further, the municipal power 2 is connected with at least one electric heater through a transformer, and the transformer can be used for transforming the municipal power into 24V to supply power for the direct current heating rod for heating.
In the running process of the device, the heat storage tank is controlled by the central controller and is preferentially heated by solar power generation; when the temperature of the heat storage tank is more than or equal to 50 ℃, the air source heat pump unit stops running; when the temperature of the heat storage tank is less than 50 ℃ and other signals are received at the same time, the central controller controls the air source heat pump unit to be started. When the voltage that photovoltaic power generation system 1 provided is not enough, in time put through the municipal power 2 after the pressure regulating, utilize photovoltaic power generation system 1 and municipal power guarantee the continuous reliability of power supply to this normal operating of guaranteeing the device.
In one optional embodiment, the photovoltaic electric heating system is directly connected with the heat storage tank of one medium-temperature heat storage section connected with the high-temperature heat storage section; the municipal power is directly connected with the heat storage tank of one of the medium-temperature heat storage sections connected with the low-temperature heat storage section, and the municipal power is directly connected with the low-temperature heat storage section through the switch control valve; the low-temperature heat storage section is communicated with the air source heat pump unit through a heat pump circulating pump 3.
In an optional implementation manner, the cascade heat energy utilization device of the embodiment further includes an outdoor temperature sensor and a dc voltage identification device, the outdoor temperature sensor is used for monitoring outdoor temperature and transmitting real-time monitored temperature data to the central controller, and the dc voltage identification device is used for identifying and judging whether the voltage provided by the photovoltaic power generation system 1 reaches the required 24V voltage. Illustratively, the required 24V voltage can not be met within a certain time (such as 10 minutes), and when the outdoor temperature is more than or equal to 20 ℃, the central controller 9 controls the air source heat pump to continuously heat the water to 55 ℃; when the outdoor temperature is 20 ℃ lower, the central controller 9 controls the air source heat pump to continuously heat the water to 45 ℃ and then switches the municipal heating to 60 ℃.
For example, the operation states of the step thermal energy device can be set differently for different regions, which is as follows: for areas hot in summer and warm in winter, such as Guangzhou and Guangxi, the photovoltaic power generation system 1 is adopted to directly drive the air source heat pump unit 7 to heat hot water, and if the photovoltaic power generation system 1 is insufficient, municipal power is adopted for supplement; domestic hot water heating comes from an air source heat pump unit; for areas which are not hot in summer and warm in winter, such as Shanghai and Beijing, a photovoltaic electric heating system is adopted to directly heat hot water, and the municipal electric power drives the air source heat pump unit 7 to heat the hot water, so that photovoltaic heating and heat pump cascade energy utilization are realized.
For example, the operation states of the step thermal energy device can be set differently for different seasons, which is as follows: the combined heating can be realized in winter, and the heating can be realized only by the air source heat pump in summer.
The lowest COP (coefficient of performance) of the photovoltaic power generation system 1 in the hot-summer and warm-winter areas, which directly drives the air source heat pump unit 7, is not less than 2.0;
the air source heat pump unit 7 in the non-summer-hot and winter-warm area heats the highest temperature of 50 ℃, the photovoltaic heating system is adopted to heat the hot water in the heat storage tank 18 to 60-65 ℃ in the daytime, the stepped utilization of different energy sources is realized, and the utilization rate of new energy sources is improved to the maximum extent.
It should be noted that, the central controller 9 of this embodiment is used for controlling the operation process of the whole step heat energy device, and can implement intelligent automatic control and intelligent remote control. The central controller 9 includes at least the following control contents: controlling the photovoltaic power supply to be preferentially utilized, and cutting off the photovoltaic power supply when the temperature of the heat storage tank exceeds 95 ℃; controlling the starting and stopping of the air source heat pump according to the temperature and the timer; controlling the starting and stopping of the hot water circulating pump according to the temperature; controlling the municipal electric heating water temperature to 65-70 ℃, and starting a hot water circulating pump to realize high-temperature disinfection of the system; the system also comprises a valve on a control pipeline network, and the communication state of different branch pipelines is controlled.
Compared with the prior art, the step heat energy utilization device provided by the embodiment has at least one of the following beneficial effects:
1. the solar energy and air energy are utilized for heating, a photovoltaic electric heating system replaces a solar energy photo-thermal system, a solar photovoltaic panel generates electricity and is connected with a direct current electric heater in a heat storage tank through a lead, the direct current electric heater heats water stored inside, and the heat storage tank is utilized for storing heat energy converted from electric energy to hot water; the unit heat storage tank is simultaneously connected with the air source heat pump unit and heated by the air source heat pump unit, the air source heat pump unit is started when the temperature of water in the heat storage tank is less than or equal to 50 ℃, the COP value of the heat pump is convenient to improve, the photovoltaic power generation is used for heating hot water at the stage of 50-65 ℃, the cascade utilization of renewable energy is realized, and the utilization efficiency of new energy is improved.
2. The heat storage tank, the pipeline, the circulating pump, the heat insulation material, the shell and other accessories are integrally processed into a whole through prefabrication, and the assembly type process of factory prefabrication and field cold connection is adopted, so that the integration, standardization and assembly of heating equipment are realized, the transportation and installation are convenient, the special-shaped space is effectively utilized, the heat storage tank can be directly placed on a roof and an outdoor ground, and an indoor machine room is not needed, so that the occupied area of a step heat energy utilization device is saved, the civil engineering cost is obviously saved, the investment is reduced, the energy and carbon can be saved, the dual-carbon target is realized, the design difference caused by different type selection parameters of a designer can be effectively avoided, and the engineering technology and the economic rationality are greatly improved.
3. Can realize high-temperature sterilization, only need store the hot section with the low temperature and heat to the high temperature state after to carry out systemic circulation through the circulating pump and can wholly circulate the disinfection, the systematic sterilization mode is more energy-conserving effective. The requirement of the sanitary and safe water quality of hot water is met, and the management cost and the accident safety risk of the disinfection equipment are reduced.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.
Claims (10)
1. A stepped thermal energy utilization device, comprising:
a housing having an installation space;
the step heat storage section is provided with a plurality of heat storage sections, is arranged in the installation space of the shell and is used for storing water with different temperatures;
the photovoltaic electric heating system comprises a photovoltaic power generation system and an electric heater, wherein the electric heater is arranged in the heat storage section and is connected with the photovoltaic power generation system;
and the air source heat pump unit is communicated with at least one heat storage section.
2. The stepped heat energy utilization device according to claim 1, wherein an insulating layer is further disposed in the installation space of the housing, and the insulating layer is disposed around the stepped heat storage section.
3. The cascade heat energy utilization device of claim 1, wherein the photovoltaic power generation system comprises a solar photovoltaic panel disposed on a top of the housing.
4. The stepped heat energy utilization device according to claim 3, wherein the electric heater is a 24V direct current heating rod, and the heater is connected with the solar photovoltaic panel through a lead.
5. The stepped heat energy utilization device of claim 4, wherein the heater is further connected to municipal power via a transformer.
6. The step heat energy utilization device according to any one of claims 1 to 5, wherein the step heat storage section comprises a high temperature heat storage section, a medium temperature heat storage section and a low temperature heat storage section which are communicated in sequence, the high temperature heat storage section, the medium temperature heat storage section and the low temperature heat storage section respectively comprise a plurality of independent and communicated heat storage tanks, and the heat storage tanks are communicated with one another through connecting pipes.
7. The cascade heat energy utilization device of claim 6, further comprising a high temperature disinfection circuit, wherein a disinfection device is disposed on the disinfection circuit;
one end of the high-temperature disinfection pipeline is connected with the high-temperature heat storage section, and the other end of the high-temperature disinfection pipeline is connected with the low-temperature heat storage section; when high-temperature disinfection is needed, a fluid circulation path is formed by the high-temperature heat storage section, the medium-temperature heat storage section, the low-temperature heat storage section and the high-temperature disinfection pipeline, and the temperature of hot water in the system is raised to be above 60 ℃ by using an air source heat pump unit or photovoltaic electric heating; the fluid circulation path is provided with a hot water circulation pump for providing power for the fluid circulation.
8. The stepped heat energy utilization device according to claim 7, wherein the housing has a first installation space and a second installation space, and the high-temperature heat storage section, the medium-temperature heat storage section and the low-temperature heat storage section are integrally arranged in the first installation space;
and the second installation space is internally provided with an external pipeline network, an air source heat pump unit, a hot water circulating pump and a disinfection device.
9. The stepped heat energy utilization device according to claim 8, wherein a thermostatic water mixing valve and a heat meter are further arranged on the pipeline network.
10. The stepped heat energy utilization device of claim 8, further comprising an expansion tank mounted in the second mounting space, the expansion tank connected to a pipeline network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222498103.8U CN218455287U (en) | 2022-09-21 | 2022-09-21 | Step heat energy utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222498103.8U CN218455287U (en) | 2022-09-21 | 2022-09-21 | Step heat energy utilization device |
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| Publication Number | Publication Date |
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| CN218455287U true CN218455287U (en) | 2023-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222498103.8U Active CN218455287U (en) | 2022-09-21 | 2022-09-21 | Step heat energy utilization device |
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- 2022-09-21 CN CN202222498103.8U patent/CN218455287U/en active Active
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