KR20120137743A - Apparatus for using remainder heat in cooling/heating system - Google Patents

Abstract

PURPOSE: An apparatus for utilizing surplus heat in an air conditioning and heating system is provided to save electric energy by collecting surplus heat from an air conditioning device with air conditioning. CONSTITUTION: An apparatus for utilizing surplus heat in an air conditioning and heating system comprises a heat pump(10), a hot water tank(20), a cold water tank(30), a radiant unit(40), and a heat exchanger(60). The heat pump cools and compresses refrigerant, and continually vaporizes the refrigerant. The hot and cold water tanks are separately placed from the heat pump at a constant distance. The hot water tank is connected to a first pump(22) through a first circulation line(21). The hot water tank circulates the hot water from a condenser by the first pump. The cold water tank is connected to the first pump(32) through a second circulation line(31). The radiant unit is connected to the hot water tank and air-conditioning and heating facility(50), and linked to a third pump(42) through a third circulation line(41). The radiant unit emits hot air by circulating the hot water in the hot water tank by the third pump. The heat exchanger is connected to the cold water tank through a fourth circulation line(61), and absorbs geothermal heat, seawater heat, or waste heat.

Description

Apparatus for using remainder Heat in cooling / heating system}

The present invention relates to an apparatus for utilizing excess heat in a cooling and heating system, and more particularly, to store cold and hot water in a cold water and a hot water tank using a water heat exchange type heat pump, and to use a cold and hot water in the cold and hot water tanks. Cooling or heating can be carried out at a temperature suitable for the growth conditions of the crops, and the cold water tank can be used as an excellent tank, but the heat of rainwater in summer and heat exchanger (geothermal heat, seawater heat waste heat, etc.). It recovers the heat recovered from the heat and the excess heat of the heating and cooling facilities, maintains and stores the water temperature of the cold water tank at 10 ~ 30 ℃ and supplies it to the evaporator of the heat pump to improve the operating efficiency of the bottom pump and used for the operation of the heat pump The present invention relates to an apparatus for utilizing excess heat in a cooling and heating system that can save electric energy.

In general, all crop cultivation, including fruits and vegetables, is grown in houses to improve productivity. In order to cultivate crops in the house like this, it is always important to maintain the conditions suitable for the growth conditions of the crops (especially temperature and humidity).

For this reason, a heat pump that cools when the outside temperature is hot and heats when the outside temperature is low is installed and used. The heat pump is basically composed of a compressor, a condenser, an expansion valve, and an evaporator as a normal cooling cycle, and the refrigerant discharged from the compressor in the flow path between the compressor, the condenser, and the evaporator is discharged from the condenser and the evaporator. It may be provided with a four-way valve for switching to either side.

The heat pump is mainly air-cooled when the internal temperature of the heating and cooling facilities above a certain temperature (about 27 ℃) and heating when the internal temperature of the heating and cooling facilities is lower than a predetermined temperature (about 20 ℃), the heat pump The condenser and evaporator of the water is adopted by the heat exchange method, the heat obtained by heat exchange through the condenser and the evaporator is stored in the heat storage tank, that is, the hot water tank and the cold water tank, and is utilized by supplying and circulating the cooling and heating facilities. It wasn't.

In the existing air-conditioning system using the heat pump as described above, simply cooling and heating by heat obtained by exchanging heat through the condenser and evaporator, which are heat exchangers of the heat pump, or cold water or hot water obtained by the water heat exchange method, There is no problem that the use of excess heat to utilize the heat of the rain falling on the excess heat or cooling and heating facilities are not provided at all, thereby reducing the utilization efficiency of the heat pump and consequently increases the electrical energy loss excessively.

The present invention has been researched and developed in order to solve the above-mentioned wastes and problems, the cold and hot water obtained by heat exchange of the evaporator and condenser of the heat pump by the water heat exchange method is stored in the hot and cold water tank and the hot water and the hot water of the cold water tank and It provides a device for utilizing excess heat in a cooling and heating system that cools or heats the cooling and heating facilities for growing crops to a temperature suitable for the growth conditions of the crops by circulating cold water to the heating and cooling facilities and radiates or absorbs heat. have.

In particular, the cold water tank is connected to a rain tank to receive rainwater, and connected to a heat exchanger such as geothermal or seawater heat, as well as circulating the cold water of the cold water tank when the temperature of the air-conditioning facility is increased during the daylight At the same time, by recovering the excess heat of the heating and cooling facilities, the water temperature of the cold water tank can be maintained and stored at 10 ~ 30 ℃ at all times, and then supplied to the evaporator of the heat pump, thereby improving the operating efficiency of the heat pump and operating the heat pump. To save electrical energy.

In order to achieve the above object, the present invention provides a heat pump including a compressor, a condenser, an expansion valve, and an evaporator configured to continuously perform a process in which a refrigerant is compressed and cooled to become a liquid and then vaporized; A hot water tank provided at a position spaced apart from the heat pump at a predetermined distance and connected to the hot water pump through a first circulation line to store or circulate the hot water obtained by the water heat exchange method by the first pump; A cold water tank provided at a position spaced apart from the heat pump at a predetermined distance and connected through a second circulation line to store or circulate the cold water obtained by the water heat exchange method in the evaporator by a second pump; A radiating unit connected to the heating and cooling facility spaced apart from the hot water tank and connected to a third circulation line to circulate hot water in the hot water tank by a third pump to radiate warmth; A third circulation line connected between the hot water tank and the radiation unit includes a first conversion line connected to circulate cold water of the cold water tank to a radiation unit in a cooling and heating facility; A heat exchanger connected to the cold water tank through a fourth circulation line to absorb geothermal heat, sea water heat or waste heat; A rainwater line connected from a cooling and heating facility to a cold water tank to store rainwater falling on the cooling and heating facility in a cold water tank; And a control unit.

In the apparatus for utilizing excess heat in the cooling and heating system according to the present invention, a fourth circulation line connected between the cold water tank and the heat exchanger is further connected to a second conversion line for circulating the hot water of the hot water tank to the heat exchanger. It is done.

In the apparatus for utilizing excess heat in the cooling and heating system according to the present invention, the second and fourth to allow the cold water flowing along the second circulation line bypasses the cold water tank is supplied to the heat exchanger and then circulated through the process of returning to the evaporator The circulation line is characterized in that connected to the bypass line.

In the apparatus for utilizing excess heat in the cooling and heating system according to the present invention, the second and fourth circulation lines are heat passing through the cold water tank while forming each closed circuit in which the cold water of the cold water tank is heat exchanged by indirect water heat exchange. It is characterized in that the exchange coil is provided.

Various auxiliary heat sources such as an oil boiler, a solar boiler, an electric boiler, a firewood boiler, and the like may be added to the first circulation line to replace the deterioration of the efficiency of the heat pump and to handle insufficient heating load.

In addition, in the apparatus for utilizing excess heat in the air conditioning and heating apparatus according to the present invention, an underground air blower tube including a blowing fan is embedded in the portion of the heat exchanger so that heat exchange is performed by flowing underground air.

The present invention provides a cooling and heating facility for cultivating crops by storing and discharging cold and hot water obtained by heat-exchanging the evaporator and condenser of a heat pump in a cold / hot water tank and circulating the hot and cold water of the hot and cold water tanks to the air-conditioning facility. The temperature of has the effect of cooling or heating to a temperature suitable for the growing conditions of the crop.

In particular, the cold water tank is connected to a rain tank to receive rainwater, and connected to a heat exchanger such as geothermal or seawater heat, as well as circulating the cold water of the cold water tank when the temperature of the air-conditioning facility is increased during the daylight At the same time, by recovering the excess heat of the heating and cooling facilities, the water temperature of the cold water tank can be maintained and stored at 10 ~ 30 ℃ at all times, and then supplied to the evaporator of the heat pump, thereby improving the operating efficiency of the heat pump and operating the heat pump. It has a useful effect such as saving electric energy.

1 is a view showing a device for utilizing excess heat in a heating and cooling system according to an embodiment of the present invention.
FIG. 2 is a schematic view showing an extract of the heat pump cycle of FIG. 1.
3 is a view illustrating a normal operating state when the heat pump is in the heating mode of the apparatus of FIG.
4 and 5 are diagrams for explaining the state of recovering excess heat in the heating mode of FIG.
6 is a view showing the apparatus for utilizing excess heat in another heating and cooling system according to an embodiment of the present invention.
7 is a view illustrating a normal operating state when the heat pump is in the cooling mode in the apparatus of FIG.
FIG. 8 is a view illustrating a cooling process when the heat pump is stopped in the apparatus of FIG. 6.
9 and 10 are views for explaining a state of recovering excess heat in the cooling mode of the heat pump.
11 to 13 are views showing an apparatus for utilizing excess heat in a heating and cooling system according to another embodiment of the present invention.

Hereinafter, the apparatus for utilizing excess heat in the present air conditioning and heating system will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 5, the preferred excess heat utilization apparatus of the present invention is a heat pump 10 for obtaining hot water and cold water, and a hot water tank 20 for storing the hot water obtained from the heat pump 10 and In order to perform cooling and heating by supplying cold water tank 30 storing cold water obtained from the heat pump 10 and hot water or cold water stored in the hot water and cold water tanks 20 and 30 up to a cooling and heating facility 50. It comprises a radiation unit 40 for.

The heat pump 10 has a compressor 11, a condenser 12, an expansion valve 13 and an evaporator 14 so that the refrigerant is compressed and cooled to become a liquid and then vaporized as shown in FIG. It consists of one cycle. Between the compressor 11, the condenser 12, and the evaporator 14, a four-way valve (not shown) for converting the refrigerant discharged from the compressor 11 into either the condenser 12 or the evaporator 14 is provided. Can be added.

The hot water tank 20 is provided at a position spaced apart from the heat pump 10 at a predetermined distance, it is sufficient to be able to store the hot water obtained by the water heat exchange method in the condenser 12. The outer surface of the hot water tank 20 is preferably provided with a heat insulating material so that the insulation and heat insulation. The hot water tank 20 and the condenser 12 store the hot water obtained through the condenser 12 by the first pump 22 to the hot water tank 20 or store hot water in the hot water tank 20 by the condenser 12. The first circulation line 21 is connected to circulate through.

The cold water tank 30 is provided at a position spaced apart from the heat pump 10 at a predetermined distance, it is sufficient that it can store the cold water obtained by the water heat exchange method in the evaporator (14). Like the cold water tank 30 also the hot water tank 20, the outer surface is preferably provided with a heat insulating material so that the insulation and heat insulation. The cold water tank 30 and the evaporator 14 stores the cold water obtained through the evaporator 14 as the cold water tank 30 by the second pump 32 or stores the cold water in the cold water tank 30 as the evaporator 14. The second circulation line 31 is connected to circulate through.

The radiating unit 40 is provided in the cooling and heating facility 50 at a position spaced apart from the hot water tank 20, and radiates the warm air by circulating the hot water in the hot water tank 20 by the third pump 42. It is connected to the third circulation line 41 so as to. The radiating unit 40 may be a fan coil unit or an air conditioner capable of radiating cold or warm air to a fan when hot water of the hot water tank 20 passes through the radiating unit 40.

First conversion to the third circulation line 41 connected between the hot water tank 20 and the spinning unit 40 to circulate the cold water of the cold water tank 30 to the spinning unit 40 in the air-conditioning facility 50. The line 51 is connected, and the third circulation line 41 and the first switching line 51 of the portion where the third circulation line 41 and the first switching line 51 are connected to each other are heated in these lines. First and second open / close valves 41a and 51a are provided for selectively opening and closing the flow of cold water.

A heat exchanger 60 for absorbing geothermal heat, seawater heat or waste heat is provided at a position spaced apart from the cold water tank 30 at a predetermined distance, but the heat exchanger 60 is a cold water tank 30 and a fourth circulation line. And a fourth pump connected to the fourth circulation line 61 to allow the cold water of the cold water tank 30 to return to the cold water tank 30 through the heat exchanger 60 and to continuously circulate. 62 is provided.

The rainwater line 55 is connected from the cooling and heating facilities 50 to the cold water tank 30 so that rainwater falling on the cooling and heating facilities 50 can be stored in the cold water tank 30, and foreign matters in the rainwater are cold water tanks. It is preferable that a filter or a filtration device is provided so as not to flow into (30).

In addition, a water supply line 56 having a fifth pump 57 is provided at a lower end of the cold water tank 30 to supply the cold water of the cold water tank 30 to the fruit water or the crop.

The present invention will be described in detail the process that is operated when the heat pump is operated in the cooling and heating mode in the apparatus for utilizing excess heat in the present invention.

When the outside air temperature is low, such as in winter, the heat pump 10 is usually set to operate in a heating mode, and when the outside air temperature is high, such as in summer, the heat pump 10 is set to operate in a cooling mode.

Thus, when the heat pump 10 is operated regardless of setting the heat pump 10 to the heating mode or the cooling mode, the compressor 11 of the heat pump 10 is operated and thus the compressor 11 is operated so that the evaporator is operated. The refrigerant is sucked from (14) and compressed into a gas refrigerant having a high temperature and high pressure, and the compressed refrigerant is compressed into a condenser 12 and heat exchanged through heat exchange (heat dissipation) while passing through the condenser 12. Condensed into a high pressure liquid refrigerant.

The liquid refrigerant of the high temperature and high pressure condensed in this way is transformed into a low pressure state in the expansion valve 13 to be evaporated in the evaporator 14, so as to absorb the vaporization heat of the refrigerant required for vaporization from the outside to cool the surroundings of the evaporator 14.

The low temperature and low pressure gas refrigerant passing through the evaporator 14 is sucked and compressed by the compressor 11 to repeatedly circulate the above-mentioned process, so that continuous heat exchange in the condenser 12 and the evaporator 14 is performed. It is done.

As mentioned above, while the heat pump 10 is operating, the high heat of the refrigerant continuously pumped from the compressor 11 of the heat pump 10 is transferred to the condenser 12 through water heat exchange.

As described above, when the first pump 22 on the first circulation line 21 is operated in the heating mode or the cooling mode of the heat pump 10, the water of the hot water tank 20 is sucked in. The hot water tank 20 is discharged through the condenser 12. In other words, a process of sucking the lower water in the hot water tank 20 and discharging it to the upper side of the hot water tank 20 through the condenser 12 is continuously performed.

At this time, the high-temperature, high-pressure gas refrigerant in the condenser 12 and the water flowing along the first circulation line 21 having a lower temperature than the gas refrigerant are heat exchanged with each other. Therefore, the high-temperature, high-pressure gas refrigerant passing through the condenser 12 is condensed into the liquid phase, and the water flowing along the first circulation line 21 passes through the condenser 12 to become hot water (45-50 ° C.), thereby providing a hot water tank ( 20) Since the water is circulated continuously continuously, the water in the hot water tank 20 becomes hot water (about 50 ℃).

At the same time, when the third pump 42 installed in the third circulation line 41 is operated, the hot water in the upper portion of the hot water tank 20 is sucked through the third circulation line 41 to be supplied to the spinning unit 40, and the spinning The unit 40 is returned to the lower portion of the hot water tank 20 through the third circulation line 41. Thus, the process of returning back to the hot water tank 20 through the third circulation line 41 in the hot water tank 20 continuously circulates, thereby dissipating heat from the radiating unit 40 in the air conditioning and heating facility 50. Heating (20 ~ 25 ℃) is done.

Since the hot water is dropped to the lower temperature of the hot water tank 20 is supplied to the lower portion of the hot water tank 20, the temperature is lower than the upper portion, which is the same as the natural convection phenomenon, so the water above and below the hot water tank 20 does not flow. .

Therefore, the hot water in the hot water tank 20 is supplied with high temperature and suctioned through the first and third circulation lines 21 and 41, so that the fluid flow can be stabilized as if the natural convection phenomenon was intended. As a result, the heat loss of the heating can be minimized and efficient heating can be achieved.

While the heat pump 10 is operating as described above, the high pressure refrigerant condensed by the condenser 12 of the heat pump 10 becomes low pressure through the expansion valve 13 so that the evaporator 14 is evaporated and vaporized. Due to the heat transfer from the evaporator 14 through a water heat exchange method.

In this state, when the second pump 32 of the second circulation line 31 is operated, the water in the upper portion of the cold water tank 30 is sucked and the sucked water passes through the evaporator 14 to the cold water tank 30. It will be discharged. In other words, a process of sucking the upper water in the cold water tank 30 and discharging it to the lower side of the cold water tank 30 through the evaporator 14 is continuously performed.

At this time, in the evaporator 14, the low temperature and low pressure gas refrigerant and the cold water flowing along the second circulation line 31 having a higher temperature than the gas refrigerant are exchanged with each other. Accordingly, the low-temperature low-pressure gas refrigerant passing through the evaporator 14 is evaporated and vaporized into gas, and the cold water flowing along the second circulation line 31 passes through the evaporator 14 to become cold water (10-15 ° C.) to form a cold water tank. (30) Since the water is circulated continuously, the water in the cold water tank 30 becomes cold water (about 10 ℃).

At the same time, when the fourth pump 62 on the fourth circulation line 61 is operated, the lower cold water in the cold water tank 30 is sucked, and the cold water thus sucked is discharged to the cold water tank 30 through the heat exchanger 60. The process is performed continuously. At this time, since the cold water (10 ° C.) introduced into the heat exchanger (60) is lower than the geothermal heat (about 16 to 17 ° C.), the cold water tank (30) takes the heat from the geothermal heat while passing through the heat exchanger (60). To be discharged.

As described above, in the state where the heat pump 10 is operated, the evaporator 14 and the heat exchanger 60 are formed by the second and fourth pumps 32 and 62 on the second and fourth lines 31 and 61. Cold water of the cold water tank circulated by heat exchange with is maintained at 10 ℃ or more. When the cold water of the cold water tank 30 is above the set temperature (about 15 ℃) or more temporarily stops the fourth pump 62 on the fourth circulation line 61 to maintain a constant temperature of the cold water tank 30 at all times Let's do it.

As the heat pump 10 operates in the heating mode as described above, the internal temperature of the air conditioning and heating facility 50 is increased during the day when the sun shines, so the damage of the crops may occur, as shown in FIG. 4, the heating mode of the heat pump 10. Cooling can also be performed at. In this case, when the temperature in the house, which is the air conditioning and heating facility 50, is higher than or equal to the set value (about 30 ° C), the first opening / closing valve 41a on the third circulation line 41 is blocked and the first on the first switching line 51 is closed. Open the two open / close valves 51a. At this time, the fourth pump 62 on the fourth circulation line 61 is preferably stopped.

In this state, when the third pump 42 on the third circulation line 41 is operated, the lower cold water in the cold water tank 30 is sucked through the first switching line 51 and the third on the third circulation line 41. The discharge process to the cold water tank 30 through the pump 42 and the spinning unit 40 is made continuously. At this time, since the hot water is stored in the hot water tank 20 even when the heat pump 10 is operating, the excess heat of the heating / heating facility 50 may be recovered and used without being affected by the operation of the heat pump 10.

Therefore, the cold water passing through the radiating unit 40 absorbs the heat of the air in the cooling and heating facility 50 from the radiating unit 40 in the cooling and heating facility 50, and is then heated and discharged to the cold water tank 30. Cold water in the tank 30 is gradually raised to 20 ~ 30 ℃. In this way, as the cold water of the cold water tank 30 is heated, the air in the cooling and heating facility 50 is cooled, and thus cooling can be performed at a temperature suitable for growing crops by using the excess heat in the heating mode.

Unlike this, when the heat pump 10 is in a stopped state regardless of the heating / heating mode of the heat pump 10, if the internal temperature of the cooling / heating facility 50 is high and cooling is required, as shown in FIG. 5, the third circulation line ( The first opening / closing valve 41a on 41 is shut off and the second opening / closing valve 51a on the first switching line 51 is opened, and then the third pump 42 on the third circulation line 41 is operated. Lower cold water in the cold water tank 30 is sucked through the first switching line 51 and discharged to the cold water tank 30 through the third pump 42 and the radiating unit 40 on the third circulation line 41. The process of doing so will continue.

At this time, the cold water flowing along the third circulation line 41 continuously takes away heat from the air in the air conditioning and heating facility 50 while passing through the radiating unit 40, so that cooling is achieved and thus the temperature suitable for farming crops. It can be maintained as.

In the state where the heat pump 10 is continuously operated as described above, the cold water temperature of the cold water tank 30 is about 10 ° C., but the cold water of the cold water tank 30 is stopped while the heat pump 10 is stopped. Since cooling is performed by using the cold water temperature of the cold water tank 30 is gradually raised to 20 ~ 30 ℃.

At the same time, when the fourth pump 62 on the fourth circulation line 61 is operated, the lower cold water in the cold water tank 30 is sucked, and the cold water thus sucked is discharged to the cold water tank 30 through the heat exchanger 60. The process is performed continuously. At this time, the heat exchanger 60 and its surroundings are at a temperature (about 10 ° C.) lower than the geothermal heat by depriving heat as the heat pump 10 is continuously operated in the heating mode.

In this state, since the cold water introduced into the heat exchanger 60 from the cold water tank 30 is 20 to 30 ° C., heat having 20 to 30 ° C. of cold water during the passage of the heat exchanger 60 is taken away from the ground or underground air. As a result, as the ground or underground air is warmed, the cold water is cooled and cooled, and the ground or underground air around the heat exchanger 60 is restored to its original temperature.

In other words, when used in the heating mode, the temperature of the air conditioning and heating facility 50 temporarily increases during the day when the sun shines, by using the excess heat having the cold water of the cold water tank 30 at the same time to stop the heat pump 10 The cooling and heating facilities 50 may be cooled, and conversely, the ground or underground air around the heat exchanger 60 cooled below the geothermal temperature also has excess heat having the cold water of the cold water tank 30 raised through cooling. By using the ground and underground air around the heat exchanger 60 can be restored to the original temperature.

When rain falls, rainwater (excellent) collected through the drip tray provided on the roof of the air conditioning and heating facility 50 is supplied to the cold water tank 30 through the rainwater line 55, and the rainwater supplied to the cold water tank 30 in this season is Although there is a difference depending on the temperature is higher than the cold water (about 10 ℃) in the cold water tank 30, except in winter, it can be used as a heat source for heat exchange with the evaporator (14).

Figure 6 is a view showing another embodiment of the apparatus for utilizing excess heat in the present air conditioning heating system. Here, a second conversion line 52 may be added to the fourth circulation line 61 connected between the cold water tank 30 and the heat exchanger 60 to circulate the hot water of the hot water tank 20 to the heat exchanger 60. Except that connected is the same as the configuration of one embodiment. At this time, the fourth circulation line 61 and the second switching line 52 of the portion where the fourth circulation line 61 and the second switching line 52 are connected to each other selectively flows hot or cold water to these lines. Third and fourth opening and closing valves 61a and 52a for opening and closing should be provided.

According to the present invention in which the second conversion line 52 is added as described above, when the outside air temperature is high, such as in summer, the heat pump 10 is usually set to use the cooling mode, which is mostly outside temperature at night. This is because it is higher than the temperature suitable for growing crops. In particular, in the daytime when the sunlight heating and heating facilities (50) is a house for growing crops to prevent the damage to the crops is too high temperature.

As such, even when the heat pump 10 is selected as the cooling mode, the hot water and the cold water tank (not shown) may be operated through the condenser 12 and the evaporator 14 of the heat pump 10 as well as the operation of the heat pump 10. 20, 30, the water is circulated through the water heat exchange method is stored in the predetermined hot water and cold water is the same as described above, so the detailed description thereof will be omitted.

In the state where the heat pump 10 is operating as described above, as shown in FIG. 7, the first opening / closing valve 41a on the third circulation line 41 is closed and the second opening / closing valve 51a on the first switching line 51 is closed. Is opened, the third open / close valve 61a on the fourth circulation line 61 should be closed and the fourth open / close valve 52a on the second switching line 52 should be opened.

In this state, as the third pump 42 on the third circulation line 41 operates, the water in the lower portion of the cold water tank 30 is sucked through the first switching line 51, and the cold water sucked in the third It is supplied to the spinning unit 40 on the circulation line 41 and is returned to the upper portion of the cold water tank 30 through the third circulation line 41 and the first switching line 51 in the spinning unit 40.

Since the air in the air conditioning unit 50 takes away the heat of the air-conditioning unit 50 in this way, the air temperature in the air-conditioning unit 50 is lowered, so that the air is cooled to a temperature suitable for crop growth, and the air-conditioning unit 50 The cold water warmed by the heat absorbed by the air is discharged to the upper portion of the cold water tank (30). At this time, since the cold water of the cold water tank 30 has a relatively higher temperature than the lower portion, as the natural convection occurs, water in the upper and lower parts of the cold water tank 30 does not flow.

At the same time, since the fourth pump 62 on the fourth circulation line 61 operates the hot water in the hot water tank 20, the hot water in the hot water tank 20 sucks the upper hot water in the hot water tank 20. 52), the fourth circulation line 61, the heat exchanger 60, the fourth circulation line 61, and the second conversion line 52 are continuously discharged to the hot water tank 20.

At this time, since the hot water introduced into the heat exchanger 60 is about 40 to 50 ° C. higher than geothermal heat (about 16 to 17 ° C.), the hot water tank 20 is cooled to some extent by dissipating heat while passing through the heat exchanger 60. To be discharged. Therefore, the hot water in the hot water tank 20 is maintained as hot water at a predetermined temperature without being overheated, but the ground or underground air around the heat exchanger 60 and its surroundings is heated.

In addition, when the heat pump 10 is used in the cooling mode as described above, but only the third pump 42 on the third circulation line 41 is operated while the heat pump 10 is stopped as shown in FIG. 8, the cold water tank ( It is possible to perform cooling of the air conditioning facilities 50 for a predetermined time using the cold water of the cold water tank 30 until the cold water temperature of 30) becomes almost the same as the room temperature of the air conditioning facilities 50.

In addition, when the heat pump 10 is operated in the cooling mode at night, heating is required as the outside temperature is lowered. In this case, as shown in FIG. 9, excess heat of the hot water of the hot water tank 20 is provided. Heating can be carried out using.

The heating is performed by using the excess heat of the hot water tank 20, in the state of closing the on-off valves 51a, 52a, 61a except for the first open / close valve 41a on the third circulation line 41. When the third pump 42 is operated, the hot water in the upper portion of the hot water tank 20 is sucked through the third circulation line 41 to be supplied to the spinning unit 40, and the third circulation line (from the spinning unit 40). 41) is returned to the lower portion of the hot water tank 20. Thus, the process of returning back to the hot water tank 20 through the third circulation line 41 in the hot water tank 20 continuously circulates, thereby dissipating heat from the radiating unit 40 in the air conditioning and heating facility 50. Heating (20 ~ 25 ℃) is done at a temperature suitable for crop growth.

When the heating is performed in the cooling mode of the heat pump 10 as described above, as shown in FIG. 10, after stopping the heat pump 10, the fourth opening / closing valve 61a on the fourth circulation line 61 is closed and the second is closed. After opening the third open / close valve 52a on the switching line 52 and operating the fourth pump 62 on the fourth circulation line 61, the excess heat of the hot water tank 20 at night in the summer when the outside air temperature drops. The heating and heating facility 50 can be heated.

The excess heat of the hot water tank 20 is omitted because the used heating is the same as described above, and at this time, the fourth pump 62 on the fourth circulation line 61 is also operated, so that the upper hot water in the hot water tank 20 The suctioned hot water is continuously discharged to the hot water tank 20 via the heat exchanger 60.

At this time, the temperature of the ground and underground air around the heat exchanger 60 is the hot water of the hot water tank 20 is continuously circulated through the heat exchanger 60 when the heat pump 10 is operated in the daylight Therefore, it is in the state heated to 40-50 degreeC. Therefore, the hot water introduced into the heat exchanger 60 is lower than the temperature of the ground and underground air around the heat exchanger 60 by being kept in a heat dissipation state in the radiating unit 40 for heating the air conditioning and heating facility 50. As a result, while passing through the heat exchanger 60, the heat is taken out of the ground and underground air around the heat exchanger 60 and discharged to the hot water tank 20 in a warmed state.

11 is a view showing another embodiment of the apparatus for utilizing excess heat in the present air conditioning and heating system. Here, the second and fourth circulation lines 31 and 61 are supplied to the heat exchanger 60 after bypassing the cold water tank 30 by the cold water flowing along the second circulation line 31 to the evaporator 14. It is the same as the configuration of the embodiment except that it is connected to the bypass line 33 to be circulated through the return process.

According to the configuration of another embodiment as described above, the cold water cooled by the water heat exchange method through the evaporator 14 immediately without passing through the cold water tank 30, the radiating unit 40 or the heat exchanger 60 in the air conditioning facility 50 It can be supplied as.

12 is a view showing another embodiment of the apparatus for utilizing excess heat in the air conditioning and heating system according to the present invention. Here, the second circulation line 31 and the fourth circulation line 61 passes through the cold water tank 30 while forming each closed circuit in which the cold water of the cold water tank 30 is heat-exchanged by indirect water heat exchange. Except that heat exchange coils 34 and 63 are provided, the configuration is the same as that of the exemplary embodiment.

According to another embodiment configured as described above, even if rainwater collected from the roof of the air conditioning and heating facility 50 is introduced into the cold water tank 30, the third, fourth circulation line (31, 61) and the first due to the foreign matter in the rainwater The switching line 51 can prevent clogging.

13 is a view showing another embodiment of the apparatus for utilizing excess heat in the air conditioning and heating system according to the present invention. In this case, an auxiliary heat source 23 including an oil boiler, a solar boiler, an electric boiler, a firewood boiler, and the like is added to the first circulation line 21 so as to replace the deterioration of the efficiency of the heat pump 10 and to cope with insufficient heating load. In the heat exchanger 60, the underground air blower tube 65 including the blower fan 66 is embedded in the heat exchanger 60 so as to exchange heat well.

According to still another embodiment configured as described above, the heat source insufficient heat only by the condenser 12 and the hot water tank 20 of the heat pump 10 can be supplemented with the auxiliary heat source 23 to ensure a stable heat supply, It is possible to improve the heat exchange efficiency in the heat exchanger 60 by flowing the underground air around the heat exchanger 60 to the blowing fan 66 on the underground air blower tube 65.

The present invention is carried out by heating and cooling with hot water and cold water obtained by the water heat exchange through the condenser and the evaporator of the heat pump in the air conditioning system of a large heating and cooling facility that is a large house for cultivating crops and the surplus obtained when operating the heat pump in heating mode or cooling mode Cooling or heating is performed using heat as well as rainwater can be used as a heat source for heat exchange with the evaporator.

10: heat pump 11: compressor 12: condenser
13: expansion valve 14: evaporator 20: hot water tank
21: first circulation line 22: first pump 23: auxiliary heat source
30: cold water tank 31: the second circulation line 32: the second pump
33: bypass line 34, 63: heat exchange coil 40: spinning unit
41: third circulation line 42: third pump 50: heating and cooling facilities
51: first conversion line 52: second conversion line 55: storm line
60: heat exchanger 61: fourth circulation line 62: fourth pump
65: underground air blowing pipe 66: blowing fan

Claims (6)

A heat pump, in which a compressor, a condenser, an expansion valve, and an evaporator form a cycle so that the refrigerant is compressed, cooled, and then vaporized into a liquid;
A hot water tank provided at a position spaced apart from the heat pump at a predetermined distance and connected to the hot water pump through a first circulation line to store or circulate the hot water obtained by the water heat exchange method by the first pump;
A cold water tank provided at a position spaced apart from the heat pump at a predetermined distance and connected through a second circulation line to store or circulate the cold water obtained by the water heat exchange method in the evaporator by a second pump;
A radiating unit connected to the heating and cooling facility spaced apart from the hot water tank and connected to a third circulation line to circulate hot water in the hot water tank by a third pump to radiate warmth;
A third circulation line connected between the hot water tank and the radiation unit includes a first conversion line connected to circulate cold water of the cold water tank to a radiation unit in a cooling and heating facility;
A heat exchanger connected to the cold water tank through a fourth circulation line to absorb any one of geothermal heat, seawater heat, and waste heat;
A rainwater line connected from a cooling and heating facility to a cold water tank to store rainwater falling on the cooling and heating facility in a cold water tank; Surplus heat utilization apparatus in the heating and cooling system, characterized in that configured to include. The method of claim 1,
The fourth circulation line connected between the cold water tank and the heat exchanger is connected to the second conversion line for circulating the hot water of the hot water tank to the heat exchanger is further utilized in the heating and cooling system. The method of claim 1,
In the cooling and heating system, the second and fourth circulation lines for circulating the cold water flowing along the second circulation line bypasses the cold water tank and is supplied to the heat exchanger and then returned to the evaporator. Excess heat utilization device. The method of claim 1,
The second and fourth circulation lines utilize a surplus heat in a cooling and heating system, comprising heat exchange coils passing through the cold water tank while forming each closed circuit in which the cold water of the cold water tank is heat exchanged by indirect water heat exchange. Device. The method of claim 1,
An apparatus for utilizing excess heat in an air conditioning and heating system, wherein an auxiliary heat source of an oil boiler, a solar boiler, an electric boiler, and a firewood boiler is added to the first circulation line to replace the deterioration of the efficiency of the heat pump and to cope with insufficient heating load. . The method according to claim 1 or 2,
Excess heat utilization apparatus in the air-conditioning system, characterized in that the underground air blower pipe including a blowing fan is buried in the heat exchanger so that the heat exchange is performed by flowing underground air.

Images