KR101571695B1 - A system suppling renewable energy for realization of the zero energy house and controlling method thereof - Google Patents

Abstract

The present invention provides a renewable energy supply system for realization of a zero energy house, comprising: a light collection type-solar light generating device; a hot water heater supply device; and a cooling and heating energy supply device. The light collection type-solar light generating device amplifies a light source with a lens or a reflecting mirror to convert solar energy to electric energy. The hot water heater supply device includes a solar energy collecting device having a heat medium allowing a heat exchange with the light collection type-solar light generating device and a first geothermal heat pump device supplying heating energy or cooling energy with a heat source or a heat sink to supply energy for heating. The cooling and heating energy supply device includes a second geothermal heat pump device supplying heating energy or cooling energy with the heat source or the heat sink. According to the present invention, the zero energy house can be realized as a multi-family house.

Description

Field of the Invention < RTI ID = 0.0 > [0001] < / RTI > A renewable energy supply system for zero-

The present invention relates to a new and renewable energy supply system for realizing a zero energy building, and more particularly to a new and renewable energy supply system and a control method thereof for realizing a zero energy building even in a high- will be.

Looking at the energy environment in Korea, energy consumption in 2011 is 271 million tons, ranking 10th in the world, 9th in petroleum consumption and 9th in power consumption, which is higher than the 15th largest economy in the world. Domestic energy supply and demand conditions depend on overseas imports of 96.5% of the supplied energy, and domestic production energy such as renewable energy (2.61%) is weak and energy security is very weak.

In particular, the energy consumption of the building is high in Korea, which accounts for 21.2% of the final energy consumption. For this reason, the government recommends Passive House and Zero Energy House.

Passive House is a name given to mean passive in energy use. It is used by inserting indoor or outdoor air, or recycling it by using waste heat. A house built to enable heating. For this purpose, passive houses are constructed with thick insulation materials for building roofs, walls and floors, and glass windows are made of triple glazed glass containing gas to block the heat inside and outside as much as possible. In the winter, we do not use petroleum, natural gas, electricity, etc., but use heat from solar and electronic products and warmth from people's bodies. This is a way to keep the heat out of the house from coming out and to block out cold air.

Zero Energy House refers to a house that uses renewable energy in addition to passive houses and does not use fossil energy at all for heating, cooling, and hot water.

The energy used in a zero energy house can be roughly classified into thermal energy and electric energy. The heat energy can be divided into energy required for hot water supply and energy required for cooling and heating. Electric energy can be divided into energy for lighting and energy for ventilation.

However, in the case of apartment houses with large numbers of households, it is difficult to solve the thermal energy and the electric energy by themselves, and therefore, it is difficult to implement the zero energy house.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a renewable energy supply system and a control method thereof that can realize a zero energy house even in a multi-family house.

According to an aspect of the present invention, there is provided a new and renewable energy supply system for realizing a zero energy building. The system includes a lens or a reflector to amplify a light source, To a light-converging-type solar cell; A solar thermal collector having a heat medium to be heat-exchanged with the condensing solar power generator, and a first geothermal heat pump device for supplying heat or cold energy using a geothermal heat source or a heat sink, A hot water supply device for supplying hot water energy; And a second geothermal heat pump device for supplying hot or cold energy using a geothermal heat source or a heat sink to supply energy for cooling and heating for supplying cooling and heating energy .

The hot water supply device may further include a low-temperature tank for storing the heat generated by the solar heat collection device and the first geothermal heat pump device.

The energy supply device for cooling / heating may further include a heat storage tank for storing the hot or cold energy generated by the second geothermal heat pump device.

Wherein the first geothermal heat pump device and the second geothermal heat pump device each have a plurality of drilling pipes and the plurality of drilling pipes are connected to each other by selecting one drilling pipe among the plurality of drilling pipes so as to be circulated and operated, It is possible to further include a device.

According to another aspect of the present invention, there is provided a method of controlling a renewable energy supply system, the method comprising: Heating the water in the low-temperature bath by flowing heat medium into the low-temperature bath; A step of generating photovoltaic power using a light-collecting solar power generation device; Heating the water in the low-temperature bath by flowing the heating medium of the solar heat collecting apparatus heated while cooling the condensing-type solar power generation apparatus into the low-temperature bath; Supplying heated water stored in the low-temperature bath to the water supply facility; And supplying electricity generated by the condensing type solar cell generator to the electric apparatus.

Determining whether to supply energy for cooling or heating or energy for heating when supplying energy for cooling and heating; A second heat pump provided in the second geothermal heat pump unit for switching the four-way valve of the second heat pump to change the circulation direction of the refrigerant; and a heating medium, which is heat-exchanged with the condenser of the second heat pump, And heating the inside of the heat storage tank; A step of supplying the heating medium of the heated thermal storage tank to a cooling / heating device, and cooling the inside of the storage tank by flowing a heating medium heat-exchanged with the evaporator of the second heat pump into the storage tank during cooling; And supplying the cooled heat medium of the thermal storage tank to the cooling / heating device.

According to one aspect of the present invention, a new and renewable energy supply system and a control method thereof for realizing a zero energy building can supply a thermal energy and an electric energy even in a multi- do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a renewable energy supply system for zero energy building according to an embodiment of the present invention; FIG.
Fig. 2 is a detailed view of the renewable energy supply system shown in Fig. 1. Fig.
3 is a flowchart illustrating a method of controlling a hot water supply device in a new and renewable energy supply system for implementing a zero energy building according to an embodiment of the present invention.
4 is a flowchart showing a control method of an energy supply device for cooling and heating in a renewable energy supply system for implementing a zero energy building according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings.

FIG. 1 is a view showing a schematic configuration of a renewable energy supply system according to an embodiment of the present invention, and FIG. 2 is a detailed view of the renewable energy supply system shown in FIG.

1 and 2, a renewable energy supply system for implementing a zero energy building according to an embodiment of the present invention includes a condensing solar power generation apparatus 10, a hot water supply unit 20, And an energy supply device 30 for heating.

The concentrating photovoltaic device 10 is often referred to as CPV (Concentrating Photovoltaics), and is a photovoltaic power generation device that converts solar energy into electric energy by amplifying a light source using a lens or a reflector.

The concentrating photovoltaic device 10 has a merit that it can reduce the area of a cell by using a relatively inexpensive optical material rather than using an expensive solar cell and achieve a target power at a relatively low cost . Meanwhile, a tracking device for tracking the position of the sun may be provided in order to further increase the light-condensing efficiency in the light-condensing type solar cell generator 10. It is known that the light collecting type solar cell power generation apparatus 10 easily exhibits a light conversion efficiency of 20% or more.

Electricity produced using the condensing type solar power generator 10 can be supplied as electricity used in a zero-energy building. For example, various devices, such as fans, pumps, control valves, etc., used in the electric energy used for illumination and ventilation in each home, the hot water supply device 20 to be described later, and the energy supply device 30 for cooling and heating As shown in FIG.

On the other hand, when the solar cell constituting the condensing type solar cell power generating apparatus 10 continuously receives heat, the temperature of the solar cell increases. When the temperature of the solar cell increases, the light conversion efficiency decreases. Therefore, means for cooling the solar cell constituting the condensing type solar cell generator 10 are required. As a means for cooling the solar cell, a solar heat collecting device 210 constituting a hot water supply device 20 to be described later may be used.

The hot water supply unit 20 is a unit for supplying hot water to each household of the unit housing. The hot water supply is to supply hot water to the necessary places in the building. The hot water temperature is generally 40 to 50 ℃ for the toilet, 45 ℃ for the kitchen, 35~50 ℃ for the washing and 43~45 ℃ for the bath.

In order to supply the hot water, a conventional hot water supply facility has a heating device using light oil, gas, electricity or the like as a heat source, and supplies hot water to a necessary place by heating the water. However, in the renewable energy supply system according to an embodiment of the present invention, the solar heat collection apparatus 210 and the first geothermal heat pump apparatus 220 are provided to supply hot water.

Here, the solar heat collecting device 210 heats the water using the circulating water heat-exchanged with the above-described condensing type solar cell generator 10. The solar heat collecting device 210 and the low-temperature bath 230 are connected by the circulation pipe 211 and the heat is transferred by the heat medium circulating through the circulation pipe 211 (heat source).

As described above, the photovoltaic cell in the light-convergence type solar cell power generation apparatus 10 needs to cool the solar cell because the photovoltaic cell receives heat when it receives heat. The heat medium circulating through the circulation pipe 211 absorbs heat from the solar cell at a portion contacting the solar cell, and the heat of the solar cell is absorbed by the heat medium, so that the solar cell is cooled. Thus, the photoconversion efficiency of the solar cell can be increased.

The heated heating medium passing through the solar heat collecting device 210 flows into the low-boiling tank 230 through the circulation pipe 211 to draw heat into the water stored in the low-boiling tank 230, so that the heating medium is cooled, The water stored in the water tank 230 is heated. By repeating this process, the heat of the solar collecting apparatus 210 is transferred to the low-temperature bath 230.

Meanwhile, the first geothermal heat pump device 220 is a device that uses heat in the ground as a heat source. In the summer, the first geothermal heat pump device 220 is used for cooling by using heat of low temperature in the ground as compared with the outside. It is used for heating by using high temperature heat.

To this end, the first geothermal heat pump apparatus 220 drills the drilling pipe 221 into the ground so that the geothermal heat stored at a predetermined depth in the ground can be used, and the drilling pipe 221 is connected to the first heat pump 222 And the heat of the first heat pump 222 is supplied to the low-temperature bath 230 through the circulation pipe 225 by exchanging heat between the geothermal heat and the heating medium inside the first heat pump 222.

On the other hand, the first geothermal heat pump apparatus 220 includes a plurality of drilling pipes 221. The reason why the plurality of drilling pipes 221 are provided is that the time required to continuously use the geothermal heat from one drilling pipe 221 is about 1800 hours, and it takes time to recover the geothermal heat. Therefore, in order to operate the first geothermal heat pump apparatus 220 continuously for one year, it is possible to circulate and operate the drilling pipe 221 using, for example, five drilling pipes 221.

A first heat pump 222 provided in the first geothermal heat pump apparatus 220 and an interlock device 240 interlocking the drilling pipe 221 of the plurality of drilling pipes 221 are provided. One of the plurality of drilling pipes 221 is connected to the first heat pump 222 provided in the first geothermal heat pump device 220 at a predetermined time interval, .

2, the first heat pump 222 includes a compressor 222a, a condenser 222b, an expansion valve 222c, and an evaporator 222d. This configuration is connected by the refrigerant pipe 222e and the refrigerant pipe 222e is filled with the refrigerant to form one heat pump cycle.

When the heat pump cycle is operated, heat is discharged from the condenser 222b and heat is absorbed by the evaporator 222d. Therefore, by using the heat radiated from the condenser 222b, the heating medium inside the circulation pipe 225 can be heated to heat the low temperature bath 230.

On the other hand, a water supply pipe 231 for supplying a constant water is connected to one side of the low-temperature bath 230, and a hot water supply pipe 232 for supplying hot water to the other side of the low- Therefore, the low-temperature bath 230 is supplied with the constant water from the water supply pipe 231 and stored in the low-temperature bath 230. The hot water heated by the heat stored in the low-temperature bath 230 is heated by the hot water supply pipe 232 To the water supply facility 233.

Thus, by using the solar heat collecting device 210 and the first geothermal heat pump device 220 at the same time, the hot water supply device 20 can quickly produce energy for hot water supply, and the load (load) The hot water can be supplied correspondingly.

Meanwhile, the renewable energy supply system according to an embodiment of the present invention includes an energy supply device 30 for cooling and heating for supplying energy for cooling and heating.

At this time, the circuit of the hot water supply device 20 and the circuit of the energy supply device 30 for cooling and heating are completely separated and operated. By thus completely separating the circuit of the hot water supply unit 20 from the circuit of the energy supply unit 30 for cooling and heating, the hot water supply unit 20 can be optimized for the supply of hot water, (30) can be optimized by an apparatus for cooling or heating the room.

The energy supply device 30 for cooling and heating includes a second geothermal heat pump device 320 for supplying hot or cold energy using a geothermal heat source or a heat sink, And a heat storage tank (330) for storing heat or cool air produced by the pump device (320).

That is, the second geothermal heat pump apparatus 320 also includes a plurality of drill pipes 321. For example, it is possible to circulate the plurality of drill pipes 321 by operating five drill pipes 321. The second geothermal heat pump device 320 and the second heat pump 322 and the interlock device 340 for interlocking the drilling pipe 321 of the plurality of drilling pipes 321 are provided. One of the plurality of drilling pipes 321 is connected to the second heat pump 322 provided in the second geothermal heat pump device 320 at a predetermined time interval, .

On the other hand, the second heat pump 322 is constituted of the compressor 322a, the first heat exchanger 322b, the expansion valve 322c, the second heat exchanger 322d, the refrigerant pipe 322e and the four-way valve 322f .

When indoor heating is required, the four-way valve 322f is switched so that the refrigerant flows in the order of the compressor 322a, the first heat exchanger 322b, the expansion valve 322c, and the second heat exchanger 322d. 1 heat exchanger 322b serves as a condenser and the second heat exchanger 322d serves as an evaporator.

The heat medium heated by the first heat exchanger 322b is transferred to the heat storage tank 330 through the circulation pipe 325 so that the heat storage tank 330 is heated and the heat of the heat storage tank 330 is transferred to the heating device, do.

When the indoor cooling is required, the four-way valve 322f is switched so that the refrigerant flows in the order of the compressor 322a, the second heat exchanger 322d, the expansion valve 322c and the first heat exchanger 322b. 1 heat exchanger 322b becomes an evaporator and the second heat exchanger 322d becomes a condenser.

Accordingly, the heat medium cooled through the first heat exchanger 322b is transferred to the heat storage tank 330 through the circulation pipe 325 so that the heat storage tank 330 is cooled and the cool air of the heat storage tank 330 is transferred to the cooling device, It is cooled.

Thus, the second heat pump 222 can freely adjust the cooling and heating of the room by adjusting the circulation direction of the refrigerant using the four-way valve 222f.

As described above, the energy supply device 30 for cooling and heating has a heat storage tank 330 for storing heat or cold produced by the second geothermal heat pump device 320. By providing the heat storage tank 330 in this manner, it is possible to cope with the peak of cooling / heating demand and the size of the second geothermal heat pump apparatus 320 can be reduced.

The heat storage tank 330 supplies the heating medium filled in the inside to the cooling and heating device 40 through an inflow pipe 331 formed at one side and the heating medium used (heat-exchanged) in the cooling and heating device 40 is supplied to the heat storage tank 330 Through a water-return pipe 332 formed at one end of the pipe. At this time, the cooling / heating device 40 is installed in a place requiring cooling and heating, and means a device such as a fan coil unit (FCU).

In this way, the cooling / heating water whose usage is changed according to the season is supplied through the second geothermal heat pump device 320 and filled in the interior of the thermal storage tank 330. Therefore, the heat storage tank 330 can supply the necessary heating energy in the winter season and supply the necessary cooling energy in the summer season.

Hereinafter, a control method for the above-described renewable energy supply system will be described with reference to the drawings.

FIG. 3 is a flowchart illustrating a method of controlling a hot water supply device in a new and renewable energy supply system for implementing a zero energy building according to an embodiment of the present invention. FIG. And a control method of an energy supply device for cooling and heating in a new and renewable energy supply system.

First, the operation of the hot water supply system will be described with reference to FIG.

The heat medium that has been heat-exchanged with the first heat pump 222 of the first geothermal heat pump apparatus 220 flows into the low-boiling tank 230 to heat water in the low-boiling tank 230 (S110). Since the condenser 222b of the first geothermal heat pump apparatus 220 radiates heat, the heating medium is heated, and the heated heating medium can heat the water in the low-temperature bath 230. [

On the other hand, the photovoltaic power generation device 10 is used to generate solar power (S120). The solar light power generation efficiency can be increased by using the light-condensing solar power generation device 10.

At this time, the heating medium of the solar heat collecting device 210 heated while the condensing type solar power generator 10 is cooled flows into the low-temperature bath 230 to heat water in the low-temperature bath 230 at step S130. In this way, the temperature of the low-temperature bath 230 can be raised within a short time by using the solar heat collecting apparatus 210 in addition to the first geothermal heat pump apparatus 220. The hot water inside the heated low-temperature bath 230 is supplied to the water supply facility 233 (140).

Meanwhile, the electricity produced by the light-collecting type solar cell generator 10 is supplied to the electric apparatus (S150). Therefore, a zero energy house can be realized by using the electricity generated by the light-collecting type solar power generator 10 without receiving electricity from the outside.

Next, a control method of the energy supply device for cooling and heating will be described with reference to FIG.

First, it is determined whether to supply cooling energy or heating energy (S210).

When it is determined that what type of energy should be supplied, the four-way valve 322f of the second heat pump 332 provided in the second geothermal heat pump apparatus 320 is switched to change the circulation direction of the refrigerant (S220 ). Thus, heating or cooling energy can be supplied.

When it is determined that heating is required, the heat medium that has been heat-exchanged with the condenser 322b of the second heat pump 332 flows into the heat storage tank 330 to heat the inside of the heat storage tank 330 (S310). Then, the heating medium of the heated storage tank 330 is supplied to the cooling / heating device 40 (S320).

When it is determined that cooling is required, the heating medium, which is heat-exchanged with the evaporator 322b of the second heat pump 330, flows into the storage tank 330 to cool the inside of the storage tank 330 (S410). Then, the heating medium of the cooled storage tank 330 is supplied to the cooling / heating device 40 (S420).

As described above, according to the new and renewable energy supply system and its control method for realizing the zero energy building according to the embodiment of the present invention, the hot water supply device 20 and the cooling / heating energy supply device 30 are completely It is possible to easily prepare for the peak of the hot water supply. It is also possible to implement a zero energy house in a multi-family house.

While the present invention has been described in connection with the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art, who understands the spirit of the present invention, can readily suggest other embodiments by adding, changing, deleting, adding, or the like of components within the scope of the same idea, something to do.

10: condensing type solar power generator 20: hot water supply unit
30: Energy supply device for cooling and heating 40: Heating and cooling device
210: solar collector 220: first geothermal heat pump device
230: low-temperature bath 240: interlocking device
320: second geothermal heat pump device 330: heat storage tank

Claims (6)

In a renewable energy supply system for zero energy building implementation,
A condensing type photovoltaic device for converting solar energy into electric energy by amplifying a light source using a lens or a reflector;
A solar thermal collector having a heat medium to be heat-exchanged with the condensing solar power generator, and a first geothermal heat pump device for supplying heat or cold energy using a geothermal heat source or a heat sink, A hot water supply device for supplying hot water energy; And
And a second geothermal heat pump device for supplying hot or cold energy using a geothermal heat source or a heat sink to supply energy for cooling and heating for supplying cooling and heating energy,
The first geothermal heat pump device and the second geothermal heat pump device each have a plurality of drilling pipes,
Further comprising an interlock device for selecting one of the plurality of drill tubes to be interlocked so that the plurality of drill tubes can be circulated and operated. The method according to claim 1,
Wherein the hot water supply device further comprises a low-temperature tank for storing heat generated by the solar heat collecting device and the first geothermal heat pump device. The method according to claim 1,
Wherein the energy supply device for cooling and heating further comprises a heat storage tank for storing hot or cold energy generated by the second geothermal heat pump device.


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