Solar energy-ground source heat pump road ice and snow melting and high temperature lowering system

Abstract

The invention discloses a solar energy-ground source heat pump road ice and snow melting and high temperature reducing system which is mainly applied to practical application of a shallow geothermal technology. The system is installed according to on-site environment and construction drawing design, and the solar heat pump system supplies power to the whole system. The intelligent temperature control box adjusts the operation state of the equipment by detecting the environment temperature in real time. Firstly, a first circulating pump conveys a heat exchange medium to a heat pump unit for refrigeration in summer and ice and snow melting in winter; the solar heat pump system further assists the ground source heat pump in working, and high-temperature water is conveyed to the heat pump unit through the cold and heat storage device and then stored in the device for use in summer. And the second circulating pump conveys the heat exchange medium to the cold and hot water pipe, so that the water flow is in full contact with the road to achieve the purpose of heating or cooling. The problem of soil heat balance caused by long-term use of geothermal energy can be effectively solved, the cooling and heating efficiency is improved, and stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of shallow geothermal application, in particular to a solar energy-ground source heat pump road ice and snow melting and temperature reduction system based on green buildings. Background Art

[0004] Ground source heat pump technology is a renewable energy utilization technology. Ground source heat pump is a heating (or cooling) system that uses shallow geothermal resources on the ground as a cold and hot source for energy conversion. During the operation of the ground source heat pump system, it does not consume water or pollute water, and has significant environmental benefits. However, the biggest drawback of the current ground source heat pump technology is the problem of "soil thermal imbalance". Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a solar-ground source heat pump road ice and snow melting and temperature reduction system to solve the problems of snow and ice on roads in winter and high ground temperature in summer. The present invention actively heats or cools the road, which can achieve the effect of preventing problems before they occur. The road will not be iced or snowed, and the temperature will not be too high. At the same time, solar energy can provide electricity for the entire ground source heat pump system, saving electricity. The setting of the heat storage device and the solar heat pump system solves the problem of "soil thermal imbalance", avoids soil temperature imbalance, and protects the surrounding ecological environment.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a solar energy-ground source heat pump road ice melting and snow lowering temperature system, including a ground source side circulation pipeline, a ground source well, shallow rock and soil, a first water collector, a first water distributor, a first control valve, a first circulation pump, an intelligent temperature control box, a heat pump unit, a second circulation pump, a second control valve, a second water collector, a second water distributor, hot and cold water inlet pipes, roads, hot and cold water return pipes, cold and heat storage devices, a third control valve, a solar heat pump system, and a fourth control valve. The ground source well is opened in the shallow rock and soil, and the ground source side circulation pipeline is connected between the ground source well, the first water collector, and the first water distributor. The first water collector and the first water distributor are respectively connected to the heat pump unit. The heat pump unit is also connected to the cold and heat storage device, the solar heat pump system, the second water collector and the second water distributor. The second water distributor is connected to the hot and cold water inlet The first water collector is connected to the hot and cold water return pipe, the hot and cold water inlet pipe and the hot and cold water return pipe are arranged under the road, a first circulation pump is arranged between the first water distributor and the heat pump unit, a first control valve is arranged between the first water distributor and the heat pump unit, a fourth control valve is arranged between the heat pump unit and the solar heat pump system, a third control valve is arranged between the cold and heat storage device and the solar heat pump system, a second circulation pump is arranged between the second water collector and the hot and cold water return pipe, the heat pump unit and the second water distributor, the intelligent temperature control box is respectively connected to the first water collector, the first water distributor, the first control valve, the first circulation pump, the intelligent temperature control box, the heat pump unit, the second circulation pump, the second control valve, the second water collector, the second water distributor, the third control valve, the solar heat pump system, and the fourth control valve through wired or wireless connection. A solar-ground source heat pump road ice and snow melting and temperature reduction system according to claim 1, characterized in that: the solar heat pump system supplies power to the entire system.

[0009] Preferably, an intelligent temperature control box is installed in the system, which can intelligently control whether electrical appliances are working and switch the working mode of the heat pump unit by measuring the outdoor temperature. When it is monitored that the temperature is too low in winter or too high in summer, the above electrical appliances are automatically controlled to work and the circulating water of the heat pump unit is chilled water for cooling in summer and hot water for melting ice and snow for heating in winter. When the outdoor temperature does not reach the range of road icing or the surface temperature is too high, the second control valve, the second circulation pump, the second water collector, and the second water distributor are automatically controlled to be closed, and other devices are operated. The solar heat pump system is used to supplement heat for shallow rock and soil to improve the thermal imbalance problem of the ground source heat pump soil.

[0010] Preferably, the first circulation pump is used to transport the heat exchange medium with the shallow rock and soil through the first water collector to the heat pump unit.

[0011] Preferably, the heat pump unit is used to convert the circulating water after operation into chilled water for cooling in summer and hot water for melting ice and snow for heating in winter, which is used for removing ice and snow from road surfaces in winter and cooling in summer. The solar-ground source heat pump road ice and snow melting and temperature reduction system according to claim 1 is characterized in that: the cold and heat storage device is used to flow the high-temperature water flowing through the heat pump unit from the ground source heat pump in summer into the cold and heat storage device, store the heat in the cold and heat storage device, and use it for heating in winter; at the same time, flow the low-temperature water flowing through the heat pump unit from the ground source heat pump in winter into the cold and heat storage device, store the cold in the cold and heat storage device, and use it for cooling in summer, so as to solve the problem of soil thermal imbalance and low cooling and heating efficiency after long-term use of geothermal energy.

[0012] The steps of using a solar-ground source heat pump road ice and snow melting and temperature reduction system are as follows:

[0013] Step 1: Install the solar-ground source heat pump road ice and snow melting and temperature reduction system according to the site conditions and construction drawings;

[0014] Step 2: The solar heat pump system provides power for the entire system;

[0015] Step 3: The intelligent temperature control box determines the operation status of the equipment by measuring the outdoor temperature;

[0016] Step 4: The first circulation pump transports the heat exchange medium to the heat pump unit through the first water collector;

[0017] Step 5: The circulating water of the heat pump unit is chilled water for cooling in summer and hot water for melting ice and snow for heating in winter. The solar heat pump system also assists the ground source heat pump;

[0018] Step 6: Cold and heat storage device, through the third control valve, the high-temperature water from the ground source heat pump flowing through the heat pump unit in summer flows into the cold and heat storage device, and the energy is stored in the cold and heat storage device for cooling in summer, which can solve the problem of soil thermal imbalance and low cooling and heating efficiency after long-term use of geothermal energy;

[0019] Step 7: The second circulation pump transports the heat exchange medium to the cold and hot water inlet pipes through the second water distributor.

[0020] Step 8: The heat exchange medium in the hot and cold water inlet pipes is in full contact with the road to achieve a heating or cooling effect;

[0021] Step nine: The heat exchange medium that has undergone heat exchange is circulated back to the ground source well through the second water collector, the heat pump unit, and the first water distributor to repeat step four.

[0022] Preferably, in step three, when the temperature is too low in winter or too high in summer, the intelligent temperature control box controls all systems to start working. When the temperature is moderate in spring and autumn, the second control valve, the second circulation pump, the second water collector, and the second water distributor are closed, and other devices are operated, which reduces the operating cost. At the same time, the solar heat pump system can be intelligently controlled to heat the shallow rock and soil, improve the thermal imbalance problem of the ground source heat pump soil. When the shallow rock and soil heating reaches a balance, all electrical appliances are intelligently controlled to stop running;

[0023] Preferably, the first water collector and the first water distributor can better collect the heat exchange medium output from the ground source side circulation pipeline and input it into the heat pump unit, and can better transport the heat exchange medium back to the ground source well for heat exchange again;

[0024] Preferably, the second water collector and the second water distributor can better collect the heat exchange medium in the cold and hot water return pipes and input it into the heat pump unit, and can better transport the heat exchange medium to the cold and hot water inlet pipes for heat exchange with the road;

[0025] Preferably, the ground source side circulation pipe, hot and cold water inlet pipe and hot and cold water return pipe are buried pipes, which are bent into a U-shape and laid flat under the road to be heated or cooled. The depth direction of the U-shape of the buried pipe is arranged along the width direction of the road, so that heating or cooling can be better achieved, and the geothermal energy consumption is low, the operating cost is low and it is environmentally friendly.

[0026] (III) Beneficial effects

[0027] The present invention provides a solar-ground source heat pump road ice and snow melting and temperature reduction system. It has the following beneficial effects:

[0028] 1. The road ice and snow melting and temperature reduction system of the present invention can heat or cool the road by exchanging heat with shallow rock and soil. It is low-cost and energy-saving and environmentally friendly compared with manual ice and snow removal, mechanical removal and salting removal, and saves water resources compared with road watering and cooling;

[0029] 2. The heat storage device and solar heat pump system of the road ice and snow melting and high temperature reduction system of the present invention solve the problem of "soil thermal imbalance", avoid soil temperature imbalance, and protect the surrounding ecological environment;

[0030] 3. The intelligent temperature control box of the road ice and snow melting and temperature reduction system of the present invention can accurately control the operation status of the equipment, save resources, and reduce costs;

[0031] 4. The road ice-melting and snow-reducing system of the present invention will operate immediately when a temperature warning is detected. In winter, the fallen snowflakes can be melted in time without snow accumulation and road ice formation. In summer, if high temperatures occur, the road temperature will not be too high. This proactive method has the effect of preventing problems before they occur, compared with the traditional passive method. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the attached figure, 1, ground source side circulation pipeline, 2, ground source well, 3, shallow rock and soil, 4, first water collector, 5, first water distributor, 6, first control valve, 7, first circulation pump, 8, intelligent temperature control box, 9, heat pump unit, 10, second circulation pump, 11, second control valve, 12, second water collector, 13, second water distributor, 14, hot and cold water inlet pipes, 15, road, 16, hot and cold water return pipes, 17, thermal energy storage device, 18, third control valve, 19, solar heat pump system, 20, fourth control valve.

[0033] Figure 1 It is a structural schematic diagram of a solar energy-ground source heat pump road ice and snow melting and temperature lowering system of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Reference Figure 1 As shown, the use method of the solar-ground source heat pump road ice and snow melting and temperature reduction system of the present invention includes the following steps:

[0036] Step 1: Install the solar-ground source heat pump road snow melting and high temperature reduction system according to the site conditions and construction drawings; the number of circulating pipe groups on the ground source side is configured according to the actual site survey, and four groups are used as an illustration in the attached figure;

[0037] Step 2: The solar heat pump system 19 supplies power to the entire system;

[0038] Step 3: The intelligent temperature control box 8 determines the operation status of the equipment by measuring the outdoor temperature;

[0039] Step 4: The first circulation pump 6 transports the heat exchange medium to the heat pump unit 9 through the first water collector 4;

[0040] Step 5: The circulating water of the heat pump unit 9 is chilled water for cooling in summer and hot water for melting ice and snow for heating in winter. The solar heat pump system 19 also assists the ground source heat pump in working;

[0041] Step 6: The cold and heat storage device 17, through the third control valve 18, flows the high-temperature and low-temperature water of the ground source heat pump in summer and winter through the heat pump unit 9 into the cold and heat storage device 17, and stores the energy in the cold and heat storage device 17 for cooling in summer and heating in winter, which can solve the problem of soil thermal imbalance and low cooling and heating efficiency after long-term use of geothermal energy;

[0042] Step 7: The second circulation pump 11 transports the heat exchange medium to the cold and hot water inlet pipe 14 through the second water distributor 13;

[0043] Step 8: The heat exchange medium in the hot and cold water inlet pipe 14 is in full contact with the road 15 to achieve a heating or cooling effect;

[0044] Step nine: The heat exchange medium that has undergone heat exchange is circulated back to the ground source well 2 through the second water collector 12, the heat pump unit 9, and the first water distributor 5 to repeat step four;

[0045] The intelligent temperature control box 8 controls all systems to start working when the temperature is too low in winter or too high in summer. When the temperature is moderate in spring and autumn, the second control valve 10, the second circulation pump 11, the second water collector 12, and the second water distributor 13 are closed, and other devices are operated, which reduces the operating cost. At the same time, the solar heat pump system 19 can be intelligently controlled to heat the shallow rock and soil 3 to improve the thermal imbalance of the ground source heat pump. When the shallow rock and soil 3 reaches a balance, all electrical appliances are intelligently controlled to stop running;

[0046] The first water collector 4 and the first water distributor 5 can better collect the heat exchange medium output from the ground source side circulation pipeline 1 and input it into the heat pump unit 9, and can better transport the heat exchange medium back to the ground source well 2 for heat exchange again;

[0047] The second water collector 12 and the second water distributor 13 can better collect the heat exchange medium in the cold and hot water return pipe 16 and input it into the heat pump unit 9, and can better transport the heat exchange medium to the cold and hot water inlet pipe 14 to exchange heat with the road 15;

[0048] The ground source side circulation pipeline 1, the hot and cold water inlet pipe 14 and the hot and cold water return pipe 16 are buried pipes. The buried pipes are bent into a U-shape and laid flat under the road to be heated or cooled. The depth direction of the U-shape of the buried pipes is arranged along the width direction of the road, so that heating or cooling can be better achieved, and the geothermal energy consumption is low, the operating cost is low and it is environmentally friendly.

Claims

1. A solar-ground source heat pump road ice-melting and snow-reducing system, comprising a ground source side circulation pipeline (1), a ground source well (2), shallow rock and soil (3), a first water collector (4), a first water distributor (5), a first control valve (6), a first circulation pump (7), an intelligent temperature control box (8), a heat pump unit (9), a second circulation pump (10), a second control valve (11), a second water collector (12), a second water distributor (13), a cold and hot water inlet pipe (14), a road (15), a cold and hot water return pipe (16), a cold and heat storage device (17), a third control valve (18), a solar heat pump unit (9), a second circulation pump (10), a second control valve (11), a second water collector (12), a second water distributor (13), a cold and hot water inlet pipe (14), a road (15), a cold and hot water return pipe (16), a cold and heat storage device (17), a third control valve (18), The ground source well (2) is provided in a shallow rock and soil (3); the ground source side circulation pipeline (1) is connected between the ground source well (2), the first water collector (4), and the first water distributor (5); the first water collector (4) and the first water distributor (5) are respectively connected to the heat pump unit (9); the heat pump unit (9) is also connected to a cold and heat storage device (17), a solar heat pump system (19), a second water collector (12), and a second water distributor (13); the second water distributor (13) is connected to a cold and hot water inlet pipe (14); the second water collector (1 2) is connected to the cold and hot water return pipe (16), the cold and hot water inlet pipe (14) and the cold and hot water return pipe (16) are arranged below the road (15), a first circulation pump (7) is arranged between the first water distributor (5) and the heat pump unit (9), a first control valve (6) is arranged between the first water collector (4) and the heat pump unit (9), a fourth control valve (20) is arranged between the heat pump unit (9) and the solar heat pump system (19), a third control valve (18) is arranged between the cold and heat storage device (17) and the solar heat pump system (19), and the second water collector ( A second circulation pump (10) is arranged between the heat pump unit (9) and the second water distributor (13), and the intelligent temperature control box (8) is respectively connected to the first water collector (4), the first water distributor (5), the first control valve (6), the first circulation pump (7), the intelligent temperature control box (8), the heat pump unit (9), the second circulation pump (10), the second control valve (11), the second water collector (12), the second water distributor (13), the third control valve (18), the solar heat pump system (19), and the fourth control valve (20) through wired or wireless connections.

2. A solar-ground source heat pump road ice-melting and snow-reducing system according to claim 1, characterized in that: The solar heat pump system (19) provides power for the entire system.

3. The solar-ground source heat pump road ice-melting and snow-reducing system according to claim 1, characterized in that: An intelligent temperature control box (8) is installed in the system, which can intelligently control whether electrical appliances are working and switch the working mode of the heat pump unit by measuring the outdoor temperature. When it is monitored that the temperature is too low in winter or too high in summer, the above electrical appliances are automatically controlled to work and the circulating water of the heat pump unit is chilled water for cooling in summer and hot water for melting ice and snow for heating in winter. When the outdoor temperature does not reach the range of road icing or the surface temperature is too high, the second control valve (10), the second circulation pump (11), the second water collector (12) and the second water distributor (13) are automatically controlled to be closed, and other devices are operated. The solar heat pump system (19) is used to supplement the heat of the shallow rock and soil (3) to improve the thermal imbalance problem of the ground source heat pump soil.

4. The solar-ground source heat pump road ice-melting and snow-reducing system according to claim 1, characterized in that: The first circulation pump (6) is used to transport the heat exchange medium with the shallow rock and soil (3) through the first water collector (4) to the heat pump unit (9).

5. The solar-ground source heat pump road ice-melting and snow-reducing system according to claim 1, characterized in that: The heat pump unit (9) is used to convert the circulating water after operation into chilled water for cooling in summer and hot water for melting ice and snow for heating in winter, and is used for removing ice and snow from the road surface (15) in winter and cooling in summer.

6. The solar-ground source heat pump road ice-melting and snow-reducing system according to claim 1, characterized in that: The cold and heat storage device (17) is used to allow high-temperature water flowing through the heat pump unit (9) from the ground source heat pump in summer to flow into the cold and heat storage device (17), store heat in the cold and heat storage device (17) and use it for heating in winter. At the same time, low-temperature water flowing through the heat pump unit (9) from the ground source heat pump in winter to flow into the cold and heat storage device (17), store the cold in the cold and heat storage device (17) and use it for cooling in summer, so as to solve the problem of soil thermal imbalance and low cooling and heating efficiency after long-term use of geothermal energy.

7. A method for using a solar-ground source heat pump road ice and snow melting and temperature reduction system, characterized in that: Here are the steps: Step 1: Install the solar-ground source heat pump road ice and snow melting and temperature reduction system according to the site conditions and construction drawings; Step 2: The solar heat pump system (19) supplies power to the entire system; Step 3: The intelligent temperature control box (8) determines the equipment operation status by measuring the outdoor temperature; Step 4: The first circulation pump (6) transports the heat exchange medium to the heat pump unit (9) via the first water collector (4); Step 5: The circulating water of the heat pump unit (9) is chilled water for cooling in summer and hot water for melting ice and snow for heating in winter. The solar heat pump system (19) also assists the ground source heat pump in working; Step 6: The cold and heat storage device (17) flows the high-temperature / low-temperature water flowing through the heat pump unit (9) of the ground source heat pump in summer / winter into the cold and heat storage device (17) through the third control valve (18), and the energy is stored in the cold and heat storage device (17) for cooling in summer / heating in winter, which can solve the problem of soil thermal imbalance and low cooling and heating efficiency after long-term use of geothermal energy; Step 7: The second circulation pump (11) transports the heat exchange medium to the cold and hot water inlet pipes (14) via the second water distributor (13). Step 8: The heat exchange medium in the hot and cold water inlet pipe (14) is in full contact with the road (15) to achieve a heating or cooling effect; Step nine: The heat exchange medium that has undergone heat exchange is circulated back to the ground source well (2) through the second water collector (12), the heat pump unit (9), and the first water distributor (5) to repeat step four.

8. The method for using the solar-ground source heat pump road ice-melting and snow-reducing system according to claim 7, characterized in that: In step three, when the temperature is too low in winter or too high in summer, the intelligent temperature control box (8) controls all systems to start working. When the temperature is moderate in spring and autumn, the second control valve (10), the second circulation pump (11), the second water collector (12), and the second water distributor (13) are closed, and other devices are operated, thereby reducing the operating cost. At the same time, the solar heat pump system (19) can be intelligently controlled to supplement heat for the shallow rock and soil (3), thereby improving the thermal imbalance problem of the ground source heat pump soil. When the heat supplement for the shallow rock and soil (3) reaches a balance, all electrical appliances are intelligently controlled to stop operating.

9. The method for using the solar-ground source heat pump road ice and snow melting and temperature reduction system according to claim 8, characterized in that: The first water collector (4) and the first water distributor (5) can collect the heat exchange medium output from the ground source side circulation pipeline (1) and input it into the heat pump unit (9), and transport the heat exchange medium back to the ground source well (2) for heat exchange again. The second water collector (12) and the second water distributor (13) can collect the heat exchange medium in the cold and hot water return pipes (16) and input them into the heat pump unit (9), and can transport the heat exchange medium to the cold and hot water inlet pipes (14) to perform heat exchange with the road (15).

10. The method for using the solar-ground source heat pump road ice-melting and snow-reducing system according to claim 9, characterized in that: The ground source side circulation pipeline (1), the hot and cold water inlet pipe (14) and the hot and cold water return pipe (16) are underground pipes. The underground pipes are bent into a U-shape and laid flat under the road to be heated or cooled. The depth direction of the U-shape of the underground pipe is arranged along the width direction of the road, so that heating or cooling can be better achieved. The geothermal energy consumption is low, the operating cost is low, and the environment is environmentally friendly.

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