JPH0776649B2 - Cooling and heating snow-collecting method and device by using heat storage in aquifer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cooling and heating snow melting by utilizing heat storage in an aquifer and a device therefor, and particularly artificially collecting solar heat in the summer and storing it in an underground aquifer.
We take it out in the winter months after half a year and use it for heating and snow removal.
The present invention relates to a cooling and heating snow melting heat collecting method and apparatus for collecting solar heat by collecting low temperature in winter and storing it in an aquifer underground and using it for cooling in the summer after six months.

[0002]

2. Description of the Related Art Conventionally, according to the method of utilizing groundwater disclosed in Japanese Examined Patent Publication No. 58-11529, in the summer, groundwater at a low temperature (7 to 10 ° C.) is pumped up from a pumping well provided in a cold water zone by a pumping pump, Through the heat exchanger to the indoor heat exchanger, and the cooling fan circulates the indoor air through the heat exchanger, and the water temperature is about 2
The warm water of 0 ℃ is used, and the final water after cooling is carried to the rooftop by pipes and sprinkled on the roof with a sprinkling nozzle, and the outside air temperature is 30
In the case of ° C, the solar heat is absorbed by raising the water temperature to 27 to 29 ° C. The hot water heated in this way is guided to the injection well by a pipe and is injected deep into the ground to heat the underground layers, and at the same time, the injected hot water creates a warm water zone.

Further, in the winter, high-temperature (23 to 25 ° C.) ground water is pumped up from a pumping well provided in a warm water zone through a pumping pipe and is sent to a heating heat exchanger in a room by a heating fan. By circulating air over this heat exchanger, heating with hot water is carried out, and the final water after heating is carried to the rooftop and the site by piping, and water is sprayed from the watering nozzle so that snow on the roof can be removed. use. As a result, the water temperature is much lower than the room temperature of the groundwater, and reaches a temperature of 5 to 7 ° C, which is close to the outside air temperature. This temperature-reduced terminal water is piped back into the underground,
Inject deep into the ground with an injection well to create a cold water zone in the aquifer.

Further, in the groundwater artificial reduction device in the cooling and heating equipment described in Japanese Utility Model Publication No. 63-25466, one is a hot water well and the other is a cold water well, and a pair of recharge wells each having a pumping pump, It has a refrigeration unit and a conduit that connects the recharge wells and distributes well water from the hot water well to the cold water well or from the cold water well to the hot water well, and this refrigeration unit has an evaporator when one functions as a condenser. The first and second pipelines that connect the first and second condensers / evaporators and the condensers / evaporators communicating with each other to form a refrigerant circulation pipeline, and the first and second pipelines. And a switching valve provided respectively for switching the flow direction of the refrigerant in the circulation pipe, and in the first condenser / evaporator, the well water in the conduit and the refrigerant in the circulation pipe exchange heat, Flow in the pipeline on the load side in the condenser / evaporator And the refrigerant in the circulation pipe line has been known one that is adapted to heat exchange.

[0005]

However, the conventional technique has many problems. That is, in Japanese Patent Publication No. 58-11529, the hot water or cold water after being used for cooling or heating a building was sprayed on the rooftop to collect solar heat or let it cool naturally and then directly injected into the groundwater zone. There was a problem that the dust and dirt of the groundwater would be introduced into the groundwater zone and cause underground pollution. Also, even if hot water is sprinkled in the summer to collect solar heat, the water temperature does not rise above the outside temperature, so even if this hot water is stored underground, the groundwater temperature pumped in winter is slightly higher than the normal groundwater temperature. However, there is a drawback that it cannot be used for heating as it is.

[0006] In Japanese Utility Model Publication No. 63-25466, there is a hot water well and a cold water well, which is a single use of heat for cooling the building in the summer through a refrigeration unit, and a heat for heating the building even in the winter. However, there was a drawback that heat was not effectively used from the viewpoint of resource and energy saving.

The present invention has been completed in view of the above circumstances, and stores heat in summer in an aquifer underground to be used for heating and snow removal in winter after half a year, and cold in winter is also used underground. It can be stored in the aquifer and used for cooling and heat collection in the summer after half a year, and in winter operation, the temperature of the groundwater finally returned to the ground can be artificially controlled and efficient, and fire An object of the present invention is to provide a cooling and heating snow melting heat collecting method and device by utilizing heat storage of an aquifer, which is not dangerous and is safe and does not generate combustion gas, which is useful for preventing air pollution.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention draws warm groundwater stored in an underground aquifer in summer from a hot water well in winter and guides it to the evaporator of the first heat pump. In the pavement, cold groundwater that has passed through the evaporator of the first heat pump is heated by absorbing heat in the refrigeration cycle of the first heat pump to create hot water, guiding the hot water to the building to heat the inside of the building, It melts the snow that falls on the paved surface by passing water through the pipe embedded in the pipe, guides cold water from the end of the pipe to the evaporator of the second heat pump, and absorbs heat in the refrigeration cycle of the second heat pump. The temperature is raised to produce hot water, which is introduced into the building together with the hot water produced by the first heat pump to heat the inside of the building, passes through the evaporator of the second heat pump, and cools the groundwater. One Cold water is stored in the aquifer by returning from the water well to the underground aquifer, and in the next summer, the cold water in the aquifer is pumped from the cold well and sent to the building to absorb heat from the inside of the building. To generate hot water, send the hot water into a pipe embedded in the pavement to collect solar heat into hot water, and return the hot water from the hot water well to an underground aquifer to heat it into the aquifer. Is stored, and the operations of pumping and reducing are repeated alternately every year, which is a method for collecting and cooling snow and snow by utilizing heat storage in an aquifer.

Further, it has a hot water well and a cold water well, a first pumping pump and a first injection pipe are provided in the hot water well, and an upper part of the first pumping pump is connected by a pumping pipe to the evaporator of the first heat pump. The first injection pipe connected to the inlet part, and another pipe line from the outlet part of the evaporator is connected to the small diameter pipe embedded in the pavement body through the first switching valve and extends into the water in the warm water well. On the other hand, the end of the small-diameter pipe is connected to the inlet of the evaporator of the second heat pump through the third switching valve by a pipe line, and the outlet of the evaporator of the second heat pump is connected to the fourth switching valve and the first switching valve. The pipe line is connected to the second injection pipe through the two switching valves and extends to the water in the cold water well, and the second switching valve and the third switching valve are connected by a pipe line, Moreover, the fourth switching valve is connected via the radiator and heat collector installed in the building. It is connected to the second pumping pipe and the second pumping pump installed in the water in the water well, and the inlet and outlet of the condenser of the first heat pump is circulated between the hot water storage tank and the first circulating pump. A pipe is formed, and a circulation pipe is formed between the inlet and outlet of the condenser of the second heat pump and the hot water storage tank via a third circulation pump,
The hot water storage tank is characterized in that another circulation pipe is formed between the radiator and the heat collector inside the building through the second circulation pump, thereby cooling and heating snow by using heat storage in the aquifer. It is a heat collecting device.

[0010]

Next, the operation of the present invention will be described. The method and apparatus for cooling and heating snow-melting and heat collection using the aquifer heat storage of the present invention is a method for pumping warm groundwater stored in an underground aquifer in the summer from the warm water well with the first pump in the winter. It guides to the evaporator, heats up in the refrigeration cycle of the first heat pump to make hot water in the hot water storage tank, and guides this hot water to the radiator and collector inside the building to heat the inside of the building. The cold groundwater that has passed through the evaporator of the first heat pump is passed through a pipe embedded in the pavement to store heat in the pavement, and the heat released dissipates the snow that falls on the pavement surface to create the pavement. In addition to preventing the surface from freezing, it also allows water to pass through even when there is no snowfall and radiates heat from the pavement surface, and guides cold water from the end of the pipe to the evaporator of the second heat pump to absorb heat in the refrigeration cycle of the second heat pump Before warming and making warm water It guides the inside of the building together with the hot water created by the first heat pump to heat the inside of the building and allows it to pass through the evaporator of the second heat pump, after which the colder and colder groundwater is submerged in the water in the cold well. The cold water is stored in the aquifer by reducing it from the inside of the other cold water well to the underground aquifer via the second injection pipe.

In the next summer, the cold water in the aquifer is pumped from the cold water well by the second pump and sent to the radiator / collector inside the building to absorb heat from the inside of the building to produce hot water. To the hot water by collecting the solar heat received by the pavement surface into high temperature water by sending it to the pipe embedded in the pavement, and the high temperature water is passed through the first injection pipe provided with the lower end immersed in the water in the hot water well. To return to the underground aquifer to store heat in the aquifer, and the actions of pumping and reducing are repeated alternately every year.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a cooling and heating snow melting heat collecting method and apparatus using aquifer heat storage according to the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in which the cooling and heating snow-melting and heat collecting apparatus using the aquifer heat storage of the present invention is applied to a building. As shown in the drawing, a hot water well 1 and a cold water well 2 for implementing the cooling and heating snow melting heat collecting apparatus of the present invention have a depth of 100 m to 300 m.
Is deeply drilled deep underground, and the first pumping pump 3 and the first injection pipe 5 are installed in the water of the warm water well 1, and the pumping pipe 7a is connected to the upper part of the first pumping pump 3 and installed on the ground. The first heat pump 8 is connected to the inlet of the evaporator 10a, and another pipe extends from the outlet of the evaporator 10a through the first three-way switching valve 12 and preferably has a black color such as asphalt. Small diameter pipe 17 embedded in pavement 16
The first switching valve 12 is connected to the first injection pipe 5 whose lower end is immersed in the water in the hot water well 1, and the end of the small diameter pipe 17 is connected to the first three-way switching valve 14 through the third three-way switching valve 14. The two heat pumps 9 are connected to the inlet of the evaporator 10b by a pipe line,
The outlet of the evaporator 10b of the second heat pump 9 is connected to the second injection pipe 6 through the fourth three-way switching valve 15 and the second three-way switching valve 13 and extends to the water in the cold water well 2. Installed.

The second switching valve 13 and the third switching valve 14 are connected by a pipe line. The fourth switching valve 15 is connected to the second pumping pipe 7b and the second pumping pump 4 through a radiator / collector 19a provided in the building 18 and installed in the water in a cold water well. At the inlet / outlet of the condenser 11a of the first heat pump 8, a circulation conduit is formed between the condenser 11a of the first heat pump 8 and the hot water storage tank 23, and the inlet / outlet of the condenser 11b of the second heat pump 9 is provided. A circulation line is formed between the part and the hot water storage tank 23 via a third circulation pump 22, and the hot water storage tank 23 also includes a radiator / heat collector 19 inside the building 18 via a second circulation pump 21.
Another circulation line is formed with b.

Therefore, in this embodiment having the above-mentioned structure, the water stored in the aquifer 24 under the ground is stored in the summer.
Warm groundwater at 5 ° C to 30 ° C is pumped from the warm water well 1 by the first pumping pump 3 in winter and the evaporator 1 of the first heat pump 8 is pumped.
0a, the endothermic temperature rises in the refrigeration cycle of the first heat pump 8 and 45 ° C to 50 ° C in the hot water storage tank 23.
Hot water is made, and this hot water is used as a radiator and heat collector inside the building 1
Lead to 9b to heat the inside of the building. On the other hand, cold ground water of 15 ° C to 20 ° C that has passed through the evaporator 10a of the heat pump 8 is passed through a pipe 17 made of steel pipe having a diameter of 15 mm embedded in the pavement 16 to store heat in the pavement 16, This heat dissipation melts the snow falling on the pavement to prevent the pavement from freezing. During heating operation, water is passed even when there is no snowfall to radiate heat from the pavement, and then cool down.
℃ ~ 7 ℃ groundwater again the evaporator 2 of the second heat pump 9
0b, and further cool the groundwater controlled to 3 ° C to 4 ° C through the second injection pipe 6 whose lower end is submerged in the water of the cold water well to provide an underground aquifer from the cold water well 2 Two
Reduce to 4 and store cold heat in the aquifer. Further, heating is performed with hot water of 45 ° C. to 50 ° C. obtained by endothermic heating in the refrigeration cycle of the second heat pump 9 as in the case of the first heat pump.

In the next summer, the cold water well 2 to the aquifer 24
The cold water of 5 ° C to 7 ° C inside is pumped up by the second pump 4 and sent to the radiator / collector 19a inside the building to absorb the heat from the inside of the building into groundwater at 10 ° C to 15 ° C, and the groundwater is paved. First, the solar heat received by the paved surface is collected in the pipe 17 embedded in the body 16 to obtain high-temperature water of 30 to 40 ° C., and the lower end of this high-temperature water is submerged in the water in the hot water well 1. The water is returned from the warm water well 1 to the underground aquifer 24 via the injection pipe 5 to store heat in the aquifer, and the pumping operation and the reducing operation are repeated alternately every year. .

In this embodiment, hot water wells and cold water wells are provided to alternately perform pumping and reduction. Groundwater flow velocity and flow direction, water consumption, aquifer thickness and aquifer porosity. Etc., the distance and depth of the two wells are obtained, and a pumping well is installed on the downstream side and a reduction well is installed on the upstream side so that the hot water collected in the summer is underground from the reduction well on the upstream side. When returned to the aquifer, the warm water in this aquifer reaches the vicinity of the pumping well on the downstream side in the next winter, so in the winter, warm water is pumped from the pumping well to heat or remove snow. It is also possible to return the cold water that has been used for the first time to the return well on the upstream side to prepare for use in the next summer.

Further, in the summer use of the present embodiment, although the operation of the first and second heat pumps is stopped, another heat pipe (not shown) is provided to switch the heat pump to the cooling operation depending on the air conditioning condition inside the building. You may cool the inside of the building.

[0018]

Since the present invention has the structure as described above, it has the following effects. The cooling and heating snow melting heat collection method by using heat storage of the aquifer according to the present invention greatly contributes to energy saving because the summer heat is stored in the underground aquifer and used for heating and snow removal in the winter after half a year. In addition, the cold energy in winter is stored in the aquifer underground, and is used for the two stages of air conditioning and heat collection in the summer after half a year.

Also, in the winter operation, from the warm water of the underground aquifer stored in the summer, in the first stage, heat is taken by the heat pump and used for heating, and from the pipe buried in the road surface in the second stage. In the third stage, heat is taken from the cold water after the snow is removed and used for heating, and finally the temperature of the cold water is artificially controlled. Since it is stored in the underground aquifer, the groundwater pumped in the next summer can be kept much lower than the normal temperature of the groundwater, which makes it easy to manage the cooling of the building with a small amount of pumping, which is effective.

In heating in winter, there is no risk of fire because it does not involve burning of fossil fuel, and it is safe and does not generate combustion gas, which helps prevent air pollution. Also,
Unlike the conventional cooling method in the summer cooling, the heat inside the building is not discharged to the atmosphere as waste and is highly effective in preventing global warming.

[0021] Further, the hot drainage water after cooling in the summer is passed through a pipe buried in the road surface of the parking lot to collect solar heat, which helps prevent softening of the pavement material and the solar heat received by the road surface of the parking lot is underground. Since it is stored in the aquifer, it is very effective in preventing global warming.

[Brief description of drawings]

FIG. 1 is a partial perspective sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Hot Water Well 2 Cold Water Well 3 1st Pumping Pump 4 2nd Pumping Pump 5 1st Injection Pipe 6 2nd Injection Pipe 7 Pumping Pipe 8 1st Heat Pump 9 2nd Heat Pump 10 Evaporator 11 Condenser 12 1st Switching Valve 13 13th Two-way switching valve 14 Third-way switching valve 15 Fourth-way switching valve 16 Pavement body 17 Small-diameter pipe 18 Building 19 Radiator and heat collector 20 First circulation pump 21 Second circulation pump 22 Third circulation pump 23 Hot water storage tank 24 Aquifer

Claims (2)

[Claims] 1. The warm groundwater stored in an underground aquifer in the summer is pumped from a warm water well in the winter to be guided to the evaporator of the first heat pump, and the endothermic temperature rise in the refrigeration cycle of the first heat pump. To produce hot water, heat the water inside the building to heat the inside of the building, and pass the cold groundwater that has passed through the evaporator of the first heat pump into the pipe embedded in the pavement, and then on the pavement surface. Melts the snow falling on the pipe, introduces cold water from the end of the pipe to the evaporator of the second heat pump, heats up the endothermic heat in the refrigeration cycle of the second heat pump, and creates hot water by the first heat pump. The interior of the building is heated by introducing it to the building together with the warm water supplied, and passes through the evaporator of the second heat pump to return the colder and colder groundwater from the other cold water well to the underground aquifer. Cold in the aquifer Stores heat, and in the next summer, pumps the cold water in the aquifer from the cold water well and sends it into the building to absorb heat from the inside of the building to make hot water, and send the hot water into the pipe embedded in the pavement. Collecting solar heat into high-temperature water, reducing the high-temperature water from the hot water well to an underground aquifer to store heat in the aquifer, and repeating the pumping and reducing operations repeatedly every year. A method for collecting and cooling snow and snow by using heat storage in an aquifer. 2. A hot water well and a cold water well are provided, a first pumping pump and a first injection pipe are provided in the hot water well, and an upper part of the first pumping pump is provided with a pumping pipe of the evaporator of the first heat pump. The first injection pipe connected to the inlet part, and another pipe line from the outlet part of the evaporator is connected to the small diameter pipe embedded in the pavement body through the first switching valve and extends into the water in the warm water well. On the other hand, the end of the small-diameter pipe is connected to the inlet of the evaporator of the second heat pump through the third switching valve by a pipe line, and the outlet of the evaporator of the second heat pump is connected to the fourth switching valve and the first switching valve. The pipe line is connected to the second injection pipe through the two switching valves and extends to the water in the cold water well, and the second switching valve and the third switching valve are connected by a pipe line, Moreover, the fourth switching valve is installed in the building via a radiator and heat collector, Is connected to a second pumping pipe and a second pumping pump installed in the water inside, and the inlet / outlet part of the condenser of the first heat pump is a circulating pipe between the hot water storage tank and the first circulating pump. A passage is formed, a circulation pipe is formed between the inlet and outlet of the condenser of the second heat pump and the hot water storage tank via a third circulation pump, and the hot water storage tank is inside the building via the second circulation pump. A cooling and heating snow-melting and heat-collecting device that utilizes the heat storage of the aquifer, characterized in that another circulation pipe is formed between the radiator and the heat collector.