CN116839402A - New system solar heating soil heat accumulation and temperature increase system - Google Patents

New system solar heating soil heat accumulation and temperature increase system Download PDF

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Publication number
CN116839402A
CN116839402A CN202310048864.XA CN202310048864A CN116839402A CN 116839402 A CN116839402 A CN 116839402A CN 202310048864 A CN202310048864 A CN 202310048864A CN 116839402 A CN116839402 A CN 116839402A
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heat
collector
case
buried
solar
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CN202310048864.XA
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请求不公布姓名
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Xi Suying
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Xi Suying
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0052Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/30Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T10/10Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078Heat exchanger arrangements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Greenhouses (AREA)
  • Central Heating Systems (AREA)

Abstract

The utility model provides a new system solar heating soil heat accumulation heating system, including collector (1), bury case (2), water level guarantee case (3), heat collection pump (4), collector (1) adopts the intelligent multi-functional solar collector that has heat collection, heat accumulation buffering, freeze proof, prevent overheated, comprehensive measurement and control function, bury case (2) and adopt stainless steel water tank, bury in the underground depths, water level guarantee case (3) adopt unpressurized water tank, install in the position that is higher than collector (1), the interface communicates with water level guarantee case (3) lower interface, bury case (2) input interface under heat collector (1), bury case (2) output interface and collector (1) lower interface intercommunication, the circulation heat collection of constant temperature, through heat collection pump (4) drive collector (1) and bury in case (2) hydrologic cycle, solar energy that collector (1) were collected is imported into buried case (2), bury case (2) and pour solar energy into and store in soil and groundwater through burying case (2).

Description

New system solar heating soil heat accumulation and temperature increase system
Disclosure of Invention
The invention relates to a solar heating soil heat storage and warming system which is used for heating indoor and outdoor soil and underground water and utilizes soil heat storage to improve ground temperature and water temperature.
Background
The solar energy is inexhaustible, the solar energy can be developed and utilized globally with maximum potential and cleanest energy, the photo-thermal conversion efficiency of solar energy heat utilization is more than 90%, the photo-thermal conversion efficiency of photovoltaic power generation is lower than 20%, the photo-thermal conversion efficiency is more than 3 times higher than that of photovoltaic power generation, the solar energy which can be collected and utilized by a 1 square meter solar collector is more than 4 square meters photovoltaic panel, and the solar hot water heat energy can be stored and directly utilized in situ for heating household and commercial hot water and heating, so that the solar energy heat collector has the natural advantages that the practical use value is more than 3 times higher than that of photovoltaic power generation and cannot be replaced.
In the field of solar heat utilization, global related scientific research institutions, universities and enterprise scientific personnel struggle for hundreds of years, so far, two solar heat utilization technologies and product systems of flat plate heat collectors and vacuum tubes with relatively high use value are only built, long-term large-scale use practices prove that the conventional flat plate heat collector and vacuum tube solar heat utilization products have congenital defects and a series of unresolved problems, the natural advantages of solar heat utilization cannot be converted into product advantages, and the development of the solar heat utilization industry is severely restricted.
Solar heat utilization technology and product system constructed by taking an omnibearing original intelligent multifunctional solar heat collector as a core are called: intelligent multifunctional solar heat collector technology and product system, which are called: the new system is a brand new technical route, can be realized by products, is particularly important, cannot be realized by the existing flat-plate heat collector type and vacuum tube type solar heat utilization technology and products, and is a solar heat utilization technology and product system with all-around absolute advantages.
The solar heating soil heat storage and warming system consisting of intelligent multifunctional solar collectors is one of a series of products of a new system, and is named as follows in order to be conveniently distinguished from the solar heating soil heat storage and warming systems in the existing flat-plate heat collector and vacuum tube technical systems: the novel system solar heating soil heat accumulation and temperature increase system.
Solar energy is available nearby, if inexhaustible solar energy can be injected into soil and underground water by a simple, efficient and low-cost method, the soil and underground water are utilized for heat accumulation and temperature rise in a long period, the ground temperature water temperature can be continuously increased, the ecological environment of greenhouse greenhouses and open-air soil of hundreds of millions of hectares can be improved, the ecological environment of the soil is continuously increased by 3-10 ℃, the unsuitable planting and raising land can be changed into suitable planting and raising land according to market demands, the suitable planting and raising land can be planted in advance or after the market demands, the snow melting and anti-skid effects can be realized even if the highway is used, the livestock and poultry houses are heated, the solar energy which is equivalent to hundreds of millions of degrees of electricity can be injected into the underground every year in a single engineering, the places which need to increase the soil and underground water temperature can be realized, the solar energy can be utilized only for low cost and no-ratio energy demand for heat accumulation and temperature rise of the soil and underground water can be met, and the market potential can be hardly expanded in the world.
The existing vacuum tube type and flat plate collector type solar water heating system is used for heating and warming soil and underground water, and has the common problems that:
1. the heat collector is difficult to freeze, and is antifreezing by adopting an antifreezing solution, firstly, a complex antifreezing system, an isolated heat exchange system and a related measurement and control system are required to be configured, and the heat collector relates to various equipment, a large number of equipment and a large number of fault factors; secondly, the anti-aging and periodic liquid replacement problems of the anti-freezing liquid exist, thirdly, the anti-freezing liquid belongs to chemical materials, and a large amount of waste liquid is discharged to pollute soil and groundwater.
2. The heat collector is difficult to prevent overheating, and when the power is cut off or the power is stopped due to faults and the sunlight is strong, the heat collector is overheated, the overheating accelerates corrosion, scaling and tube explosion of all parts, and the heat collecting efficiency and the service life are affected.
3. The heat energy of the heat collector is led out with low efficiency, and the solar heating soil heat storage and heating system is formed, and most of the heat collecting pump is in a low temperature difference running state of 3-5 ℃.
4. A large amount of water is arranged in the vacuum tube, a large amount of heat energy is stored in the water, and the heat energy is lost through the header and the connector day and night.
5. The solar heating soil heat accumulation and temperature increase system has large heat collection and electricity consumption, and the field power supply is difficult.
6. The U-shaped buried pipe is adopted to inject heat into the underground with low efficiency, and the injected heat energy is easy to flow out through the U-shaped buried pipe and the soil with incompact periphery.
7. The comprehensive cost is high, the operation, maintenance and management costs are high, and the due benefit is difficult to create for users.
Disclosure of Invention
The invention provides a novel system solar heating soil heat accumulation and temperature increase system, which can comprehensively and systematically solve the problems, and the technical scheme for solving the problems is as follows:
1. the intelligent multifunctional solar heat collector is adopted for heat collection, so that the problem that the existing vacuum tube type and flat plate type solar heat collectors cannot be solved can be comprehensively and systematically solved.
The solar heat collector is the most core component of the solar heating soil heat storage and warming system, is the structure, the function and the usage of the solar heat collector, determines the combination mode, the heat collection operation method, the heat exchange method, the antifreezing method, the overheat prevention method and the measurement and control method of the solar heating soil heat storage and warming system, determines the safety, the reliability, the convenience of installation, use and maintenance and the compatibility with a heat collection site of the solar heating soil heat storage and warming system, and determines the comprehensive cost, the operation cost and the actual use value of the solar heating soil heat storage and warming system.
The existing vacuum tube type and flat plate type heat collectors have only a single heat collecting function, are difficult to prevent freezing and overheat, have low circulating heat collecting efficiency, are large in number of related equipment types and fault factors, and have high heat collecting and underground heat injection energy consumption, so that the practical use value of the formed solar heating soil heat storage and heating system is low.
The intelligent multifunctional solar heat collector has the advantages that the intelligent multifunctional solar heat collector has heat collection, heat storage temporary storage buffering, freezing resistance, overheat resistance, scale resistance and comprehensive measurement and control functions, and the intelligent multifunctional solar heat collector has the heat collection effects that:
1. the heat collector is freeze-proof, antifreezing fluid is not needed, and a complex antifreezing system, an isolated heat exchange system and a related measurement and control system are not needed.
2. The heat collector is not too high, and the heat collecting system is not damaged by overheat.
3. The heat collector can accumulate solar energy which is strong, weak and sometimes none, has high heat energy leading-out efficiency and low power consumption, and is suitable for photovoltaic power supply.
The intelligent multifunctional solar heat collector has been reported in a patent document.
2. The buried box (2) is adopted as the soil heat exchanger, and the buried box (2) has the beneficial effects that:
1. the buried box (2) has large water content and large heat storage capacity, and solar energy collected by the heat collector (1) can be temporarily stored in the buried box (2) and continuously exchanges heat with surrounding soil in an isolated manner, so that the underground heat injection duration is long and the efficiency is high.
2. The buried box (2) is buried deep underground, only 2 tiny plastic pipes are communicated with the heat collector, and the temperature of the buried box (2) is easy to keep.
3. The heat energy in the buried box (2) is far diffused to the periphery, and the heat accumulation and temperature increase requirements of the soil in 40 square meters can be met by only the buried box (2).
3. The water level guaranteeing box (3) is used for storing and supplementing heat conducting working media, and necessary water level conditions are created for circulating heat collection.
The water level guarantee box (3) is arranged at a position higher than the heat collector, circulating heat collection is conducted below the water level guarantee box (3), the circulating heat collection is equivalent to circulating heat collection under the water surface, circulating resistance is small, required circulating heat collection pump power is extremely low, power consumption is low, photovoltaic power supply is achieved, commercial power can not be received, and the water level guarantee box (3) can be used for manually or automatically feeding water and supplementing water.
4. Clean water and distilled water are used as heat conducting working medium.
The ratio of clean water, distilled water and antifreeze solution has the advantages that: the heat conduction efficiency is higher, the cost is close to zero, the problems of aging and deterioration and periodic liquid exchange are avoided, and the pollution to soil and underground water is avoided.
5. By adopting a constant temperature circulation heat collection method, the heat collector (1) and the buried box (2) are driven to circulate through the heat collection pump (4), and solar energy collected by the heat collector (1) is led into the buried box (2).
The constant temperature circulation heat collection method is a high-efficiency heat collection method which is adaptive to the structure and the function of a heat collector, and the difficulty of adopting the constant temperature circulation heat collection method is as follows: the heat collector has the functions of heat accumulation temporary storage buffer and high-efficiency lead-out, and can accumulate the solar energy which is strong, weak and sometimes none, the existing vacuum tube type and flat plate type solar heat collectors have no functions and do not have the condition of constant temperature circulation heat collection, and the invention has the beneficial effects that: the heat collection temperature difference is large, the required circulating heat collection pump has small power and small power consumption, is suitable for photovoltaic power supply, and can not be connected with the mains supply.
The invention comprises a heat collector (1), a buried tank (2), a water level guarantee tank (3) and a heat collecting pump (4), and is characterized in that: the intelligent solar heat collector with the functions of heat collection, heat accumulation temporary storage, buffer freezing resistance, overheat prevention, scale resistance and comprehensive measurement and control is arranged on the ground, a roof or a wall, the buried tank (2) is a cylindrical stainless steel water tank and buried in the deep ground, the water level guaranteeing tank (3) is a non-pressure-bearing water tank and is arranged at a position higher than the heat collector (1), an upper interface of the heat collector (1) is communicated with a lower interface of the water level guaranteeing tank (3) and an input interface of the buried tank (2), an output interface of the buried tank (2) is communicated with the lower interface of the heat collector (1) through a heat collecting pump (4), constant temperature circulation heat collection is carried out, the heat collector (1) and the water in the buried tank (2) are driven through the heat collecting pump (4), solar energy collected by the heat collector (1) is guided into the buried tank (2), and the solar energy can be injected and stored in soil and underground water through the outer wall in the buried tank (2).
The working principle of the invention is as follows:
the water level guarantee box (3) is arranged at a position higher than the heat collector (1), clean water is manually or automatically filled until the heat collector (1) and the water level guarantee box (3) are filled with water, when the temperature in the heat collector (1) rises to a set value, the heat collecting pump (4) is started, low-temperature water at the bottom in the buried box (2) is pumped, the low-temperature water enters the heat collector (1) from a lower interface of the heat collector (1), high-temperature water output from an upper interface of the heat collector (1) enters the buried box (2) from an upper input interface of the buried box (2), heat exchange is performed between the outer wall of the buried box (2) and surrounding soil and water, heat energy is stored in the soil and the underground water, when the temperature of water at an outlet of the heat collector (1) falls to a reset value set by a measurement and control system, the heat collecting pump (4) is closed, and the temperature in the heat collector (1) rises to be higher than the set value again, and the process is repeated.
The heat energy stored in the soil continuously increases the temperature of the ground temperature through slow release, achieves the purposes of heat accumulation and temperature increase of the soil, improvement of the ecology of the soil, out-of-season planting and raising and the like, the heat accumulation capacity and the heat accumulation period of the soil are in direct proportion to the burial depth of the buried box (2), and the heat accumulation range of the soil is in direct proportion to the area of the configured heat collector (1).
The invention has the advantages that compared with the similar products consisting of the prior vacuum tube and the flat plate collector, the invention has the following advantages:
1. the intelligent multifunctional solar heat collector has more than 5 times of bearing particularly important functions, can comprehensively and systematically solve the problem that the existing vacuum tube type and flat plate type solar heat collectors cannot solve, and the formed solar heating soil heat storage and warming system relates to less equipment types.
2. The heat collector (1) is not afraid of freezing, does not use antifreeze solution, has no emission of waste antifreeze solution, and has no pollution to soil and groundwater.
3. The heat collector (1) is not overheated and is not damaged by overheat.
4. The day and night heat loss of the heat collector (1) is only about one fifth of that of a full-glass vacuum tube heat collector, and more utilized sun can be collected.
5. The heat collectors (1) can be connected in parallel in a seamless way, the parallel connection part does not occupy lighting area, the image is good, and the installation is extremely simple.
6. The buried box (2) is buried in the ground deeply, and solar energy can be temporarily stored in the buried box (2), so that the heat injection efficiency into the ground is high.
7. The connecting pipe diameter between the buried box (2) and the heat collector (1) is extremely small, the plugging and the heat preservation are easy, and the heat energy in the buried box (2) is not easy to lose.
8. The constant temperature circulation heat collection temperature difference is large, the efficiency is high, the required pump power is extremely small, and the power consumption is low.
9. No matter how large the heat collection scale is, the utility power can be not connected, the problem of difficult power supply is avoided, and the potential safety hazards such as leakage electricity hurting people are avoided.
10. The independent solar heating soil heat storage and heating system is formed, the maximum heat collection area is within 20 square meters, multiple sets of systems can be used together, and the solar heating soil heat storage and heating system with any scale can be formed.
11. The heat quantity is large, the heat energy which is equivalent to 600 ℃ electricity is injected into the underground every year according to the heat collecting area of each square meter, and each set of solar energy heating soil heat storage and heating system of 20 square meters can inject the solar energy which is equivalent to 1.2 ten thousand ℃ electricity into deep soil every year.
12. The comprehensive cost is low, the operation cost is close to zero, and the generated benefit is high.
13. The greenhouse has wide application range, is suitable for warming greenhouse soil, heating pig, cattle, sheep, house and poultry houses, outdoor soil and Tian Chizeng temperature, can be used for artificial geothermal heat and hot springs, can be used for ice melting, snow melting, skid prevention and the like of roads and various courts, and is suitable for places needing to improve the temperature of the ground temperature.
Drawings
Fig. 1: the basic principle diagram of the invention.
Fig. 2: the invention discloses an intelligent multifunctional solar heat collector appearance schematic diagram
The numbers in fig. 1 to 2 are: 1. the heat collector, 2, the buried tank, 3, the water level guarantee tank and 4, the heat collecting pump.
Detailed Description
The heat collector (1) adopts an intelligent multifunctional solar heat collector, and the size of the heat collector is in the range of 2-20 square meters, so that users can adapt to the size.
The buried box (2) is made of stainless steel, the buried box (2) with small diameter is selected as far as possible in order to facilitate mechanical punching of holes of the buried box (2) and reduce punching difficulty and cost, the volume of the buried box is selected according to the use requirements of different occasions, and the soil heater suitable for the invention comprises the buried box, a U-shaped buried pipe and a horizontal buried pipe, and a user can select the soil heater according to the soil heating depth and the heat consumption requirements.
The water level guarantee box (3) is arranged for providing a required water level for circulating heat collection, the water level guarantee box (3) can adopt plastic heat preservation water tanks and metal heat preservation water tanks, heat conduction working media in the water level guarantee box (3) are clean water and distilled water, and the water level guarantee box (3) manually or automatically supplements the heat conduction working media according to site conditions.
The heat collecting pump (4) adopts a water pump resistant to water temperature of more than 100 ℃, and the alternating current and direct current pumps are all applicable, and the low-power direct current pump is preferred so as to be beneficial to photovoltaic power supply.
The invention has simple measurement and control, and a plurality of circuits and methods for realizing the measurement and control function, and is applicable to all circuits and methods for realizing the measurement and control.

Claims (1)

1. The novel system solar heating soil heat accumulation and temperature increase system comprises a heat collector (1), a buried box (2), a water level guarantee box (3) and a heat collection pump (4), and is characterized in that: the intelligent solar heat collector with the functions of heat collection, heat accumulation temporary storage, buffer freezing resistance, overheat prevention, scale resistance and comprehensive measurement and control is arranged on the ground, a roof or a wall, the buried tank (2) is a cylindrical stainless steel water tank and buried in the deep ground, the water level guaranteeing tank (3) is a non-pressure-bearing water tank and is arranged at a position higher than the heat collector (1), an upper interface of the heat collector (1) is communicated with a lower interface of the water level guaranteeing tank (3) and an input interface of the buried tank (2), an output interface of the buried tank (2) is communicated with the lower interface of the heat collector (1) through a heat collecting pump (4), constant temperature circulation heat collection is carried out, the heat collector (1) and the water in the buried tank (2) are driven through the heat collecting pump (4), solar energy collected by the heat collector (1) is guided into the buried tank (2), and the solar energy can be injected and stored in soil and underground water through the outer wall in the buried tank (2).
CN202310048864.XA 2022-02-17 2023-01-17 New system solar heating soil heat accumulation and temperature increase system Pending CN116839402A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210148967.9A CN115451588A (en) 2022-02-17 2022-02-17 New system solar heating soil heat storage and warming system
CN2022101489679 2022-02-17

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Publication Number Publication Date
CN116839402A true CN116839402A (en) 2023-10-03

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CN202210148967.9A Pending CN115451588A (en) 2022-02-17 2022-02-17 New system solar heating soil heat storage and warming system
CN202310048864.XA Pending CN116839402A (en) 2022-02-17 2023-01-17 New system solar heating soil heat accumulation and temperature increase system

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