KR101124638B1 - Chilled water storage system for heating and cooling directly by using solar energy - Google Patents

Abstract

The present invention relates to a shrinkage heat system for directly heating and hot water using solar heat, and more particularly, to a shrinkage heat system including a heat pump and a heat storage tank, comprising: a solar heat collecting plate for collecting hot water to produce hot water; A circulation pipe connecting the inlet / outlet of the solar heat collecting plate and the upper and lower parts of the heat storage tank; A first three-way valve installed in the circulation pipe that is the upper portion of the heat storage tank; A second three-way valve installed in the circulation pipe which is a lower portion of the heat storage tank; A branch pipe connected to the first three-way valve and the second three-way valve; A circulation pump installed on the circulation pipe to circulate water in the circulation pipe; And controlling the first three-way valve, the second three-way valve and the circulating pump to turn off the driving of the heat pump during heating and to directly use the hot water inside the heat storage tank as a hot water supply and heating water. It is characterized in that it comprises a controller for supplying heat to the solar heat collecting plate through the circulation pipe and then circulated to the heat storage tank again.

According to the present invention as described above, by storing the heat source generated in the solar system at the time of heating in the heat storage tank immediately using it as a heating and hot water supply to simplify the system to increase the heating efficiency, it is possible to relatively lower the installation cost.

 Shrinkage heat, cooling, heating, hot water supply, solar heat, heat storage tank

Description

CHILELED WATER STORAGE SYSTEM FOR HEATING AND COOLING DIRECTLY BY USING SOLAR ENERGY}

The present invention relates to a shrinkage heat system, and more particularly, a shrinkage heat system that performs direct heating and hot water supply using solar heat to store a heat source generated in a solar system during heating in a heat storage tank and use it as a heating and hot water supply immediately. It is about.

Shrinkage heat systems usually use a low-cost midnight power to operate a heat pump (freezer) in the middle of the night when power demand is not high to generate cold and hot heat, and store it as cold water (hot water) in the shrinkage heat tank. It is a system to supply heating and cooling and hot water supply to a building.

Like the shrinkage heat system, there is an ice storage system that is used to reduce power consumption at a time when power consumption is high by using inexpensive late night power.

The shrinkage heat system and the ice heat storage system are similar, but the ice heat storage system literally stores and uses the cold heat generated in the freezer in an ice state, which is slightly different from the heat shrink storage system.

That is, the shrinkage heat system uses water, which is a sensible heat storage material, in the heating and cooling of a building, so it can be operated with higher efficiency of the heat pump (chiller) than the ice heat storage system. Can be replaced.

Normally, the capacity of the heat storage tank is larger than that of the ice storage system, but the heat storage efficiency of the heat storage tank is about 8 times higher than that of the ice storage system, and the water stored in the shrinkage heat tank can be used as fire water, and the heat storage system, solar heat, waste heat source, In geothermal and air heat heat pump systems, there is an applicable feature of shrinking heat tanks instead of ice heat storage tanks.

In addition, the shrinkage heat system does not use a separate low temperature solution (Brine), so it is environmentally friendly, and it accumulates about 50% of its maximum capacity at night, and during the daytime, it is possible to use the cold and hot water of the heat pump and the heat storage tank at the same time. Compared with the ice storage method, the heat pump capacity can be reduced by 50% or more.

For the same reason as above, it is a situation that a shrinkage heat system is used more recently than an ice heat storage system.

Such a shrinkage heat system has been disclosed in Korean Patent Publication No. 10-619444 (hybrid type shrinkage heat type heating and cooling system using a solar heat system).

The hybrid type contraction heat type heating and cooling system using the solar system uses a cooling tower and a solar system as a heat source of the heat pump, and stores cold air in the heat storage unit at night during the cold storage, and then uses the cooling tower and the heat pump during the daytime cooling. To perform cooling operation by shrinking heat method.

On the other hand, the solar system is used only for the purpose of heating the hot water tank by heating the hot water supply when cooling, it is used as an auxiliary heat source of the hot water supply and heat pump.

However, the hybrid type shrinkage type heating and cooling system using the solar system has a problem that the heating performance is lowered because the heat source of the solar system is used as an auxiliary heat source of the heat pump.

In addition, there is a problem in that the installation cost is increased because complicated piping and design are required to interconnect the solar system and the heat pump.

The present invention is to solve the above problems, by storing the heat source generated in the solar system during heating in the heat storage tank and immediately using it as a heating and hot water supply to simplify the system to increase the heating efficiency, and to lower the installation cost relatively It is an object of the present invention to provide a shrinkage heat system that performs direct heating and hot water using solar power.

Features of the present invention for achieving the above object,

A heat shrinkage heat system having a heat pump and a heat storage tank, comprising: a solar heat collecting plate for condensing solar heat to produce hot water; A circulation pipe connecting the inlet / outlet of the solar heat collecting plate and the upper and lower parts of the heat storage tank; A first three-way valve installed in the circulation pipe that is the upper portion of the heat storage tank; A second three-way valve installed in the circulation pipe which is a lower portion of the heat storage tank; A branch pipe connected to the first three-way valve and the second three-way valve; A circulation pump installed on the circulation pipe to circulate water in the circulation pipe; And controlling the first three-way valve, the second three-way valve and the circulating pump to turn off the driving of the heat pump during heating and to directly use the hot water inside the heat storage tank as a hot water supply and heating water. It is characterized in that it comprises a controller for supplying heat to the solar heat collecting plate through the circulation pipe and then circulated to the heat storage tank again.

Here, the heat storage tank has a first temperature sensor which is installed at the inner lower end and senses the temperature of the water in the bottom of the heat storage tank to output.

Here, the circulation pipe has a second temperature sensor installed therein for sensing and outputting the temperature of the water in the circulation pipe.

Here, the circulation pipe further includes a heater attached to the outer surface of the circulation pipe to raise the temperature of the internal water, and a scale removing device attached to the outer surface of the circulation pipe to remove the scale in the circulation pipe. do.

Here, the controller detects the temperature of the water in the heat storage tank and the circulation pump through the sensing value of the first temperature sensor, when the temperature of the water in the heat storage tank is 60 ℃ or more and the first three-way valve and the second three-way valve and Turn off the circulation pump to terminate the heating of the water, and detect the temperature of the water in the circulation pipe through the sensing value of the second temperature sensor, when the water temperature is less than 5 ℃ the first three-way valve, the second three-way valve and the circulation pump And controlling a heater to continuously circulate water in the circulation pipe through only the branch pipe and the circulation pipe, and to heat the heater.

According to the shrinkage heat system that performs direct heating and hot water using the solar heat of the present invention configured as described above, by simplifying the system by storing the heat source generated in the solar system at the time of heating in the heat storage tank and immediately using it as a heating and hot water supply There is an advantage that can increase the heating efficiency, and relatively low installation costs.

Hereinafter, with reference to the accompanying drawings, the configuration of a shrinkage heat system for performing direct heating and hot water using the solar heat according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a system diagram showing the configuration of a contraction heat system for performing direct heating and hot water supply using solar heat according to the present invention.

Referring to FIG. 1, a contraction heat system 100 for directly heating and hot water using solar heat according to the present invention includes a heat pump 110, a heat storage tank 120, a solar heat collecting plate 130, and circulation. The pipe 140, the first three-way valve 150, the second three-way valve 160, the branch pipe 170, the circulation pump 180 and the controller 190 is composed of.

First, the heat pump 110 and the heat storage tank 120 have the same configuration as the conventional shrinkage heat system, and description thereof will not be repeated. Here, the heat storage tank 120 includes a first temperature sensor 121 installed at the lower end of the heat storage tank to sense and output the temperature of the water in the bottom of the heat storage tank 120.

The solar heat collecting plate 130 condenses solar heat in a conventional structure to produce hot water. Here, the solar heat collecting plate 130 is a method of heating the hot water directly to the heat storage tank 120, rather than a heat exchange method in the heat storage tank 120 according to the refrigerant circulation is used.

In addition, the circulation pipe 140 interconnects the inlet and outlet of the solar heat collecting plate 130 and the upper and lower portions of the heat storage tank 120. Here, the circulation pipe 140 is installed inside the second temperature sensor 141 for sensing and outputting the temperature of the water in the circulation pipe 140, and the outer surface of the circulation pipe 140 to increase the temperature of the internal water And a scale removing device 145 attached to an outer surface of the circulation pipe 140 to remove the scale in the circulation pipe 140. At this time, the descaling device 145 is always operated during the operation of the circulation pump 180 under the control of the controller 190, winding the coil on the surface of the circulation pipe 140 to apply a frequency to the coil through the frequency The method of removing scale is applied.

In addition, the first three-way valve 150 is operated on the operation of the controller 190 to be described below is installed on the circulation pipe 140 that is the upper portion of the heat storage tank 120 to vary the flow path.

On the other hand, the second three-way valve 160 is operated on the operation of the controller 190 is installed on the circulation pipe 140 which is the lower portion of the heat storage tank 120 to vary the flow path.

The branch pipe 170 has one end connected to the first three-way valve 150 to the second three-way valve 160 so that the water in the circulation pipe 140 circulates without passing through the heat storage tank 120. Connected.

In addition, the circulation pump 180 is installed on the circulation pipe 140 and operated under the control of the controller 190 to circulate the water in the circulation pipe 140.

In addition, the controller 190 turns off the driving of the heat pump 110 when heating, and the first three-way valve 150 and the second three-way valve so that the user directly uses the hot water inside the heat storage tank 120 as hot water supply and heating water. By controlling the 160 and the circulation pump 180, the water in the heat storage tank 120 is supplied to the solar heat collecting plate 130 through the circulation pipe 140, heated, and then circulated back to the heat storage tank 120. Here, the controller 190 detects the temperature of the water in the heat storage tank 120 and the circulation pump 180 through the sensing value of the first temperature sensor 121, and when the temperature of the water inside the heat storage tank 120 is 60 ℃ or more The one-way valve 150, the second three-way valve 160 and the circulation pump 180 are turned off to finish the heating of water, and the temperature of the water in the circulation pipe 140 is sensed through the sensing value of the second temperature sensor 151. When the water temperature is less than 5 ° C. by detecting and controlling the first three-way valve 150, the second three-way valve 160, the circulation pump 180, and the heater 143, the water inside the circulation pipe 140 is branched ( 170 is continuously circulated through the circulation pipe 140, but is heated through the heater 143 to block the circulation pipe 140 is frozen.

Hereinafter, with reference to the accompanying drawings the operation of the contraction heat system for performing direct heating and hot water using the solar heat according to the present invention will be described in detail.

2 and 3 is a system diagram showing an operating state of the shrinkage heat system for performing direct heating and hot water using the solar heat according to the present invention.

<< cooling time >>

During cooling, the heat pump 110 is operated under the control of the controller 190 as in the related art to perform cooling.

At this time, the first three-way valve 150, the second three-way valve 160, the circulation pump 180, the heater 143 and the descaling device 145 is turned off under the control of the controller 190. Keep it.

<< heating and hot water >>

During heating, the controller 190 controls the first three-way valve 150, the second three-way valve 160, and the circulation pump 180 in a state in which the heat pump 110 is turned off as shown in FIG. 2. The water inside 120 is supplied to the solar heat collecting plate 130 through the circulation pipe 140 to be heated, and then circulated to the heat storage tank 120 again.

At this time, the water of the heat storage tank 120 is supplied to the solar heat collecting plate 130 through the second three-way valve 160 installed on the circulation pipe 140 connected to the lower portion of the heat storage tank 120, and heated in the solar heat collecting plate 130 The collected water is recovered to the heat storage tank 120 of the first three-way valve 150 installed on the circulation pipe 140.

Then, the hot water in the heat storage tank 120 is used as heating or hot water according to the user's use.

On the other hand, the controller 190 detects the temperature of the water in the heat storage tank 120 and the circulation pump 180 through the sensing value of the first temperature sensor 121, the first temperature when the temperature of the water in the heat storage tank 120 is 60 ℃ or more. The three-way valve 150, the second three-way valve 160, and the circulation pump 180 are turned off to end the heating of the water. That is, since the temperature inside the heat storage tank 120 is maintained as medium temperature water and used as heating water and hot water supply, the solar heat collecting plate 130 can be applied even if the efficiency of the solar heat collecting plate 130 is low, and a small number of solar heat collecting plates 130 are installed and used. Can be.

In addition, the controller 160 senses the sensing value of the second temperature sensor 151 as shown in FIG. 3 to prevent freezing of the circulation pipe 140 when it is impossible to produce hot water in the solar heat collecting plate 130 at night time. By detecting the temperature of the water in the circulation pipe 140 through the water temperature is less than 5 ℃ the first three-way valve 150, the second three-way valve 160, the circulation pump 180 and the heater 143 to control the circulation The water in the pipe 140 is continuously circulated through the branch pipe 170 and the circulation pipe 140 only.

At the same time, the controller 160 blocks the circulation of the circulation pipe 140 by heating and circulating water in the circulation pipe 140 through the heater 143.

In addition, the controller 160 operates the scale removing device 145 when the circulation pump 180 is operated to prevent the scale from being generated in the circulation pipe 140.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

1 is a system diagram showing the configuration of a contraction heat system for performing direct heating and hot water using the solar heat according to the present invention,

2 and 3 is a system diagram showing an operating state of the shrinkage heat system for performing direct heating and hot water using the solar heat according to the present invention.

<Explanation of symbols on main parts of the drawings>

110: heat pump 120: heat storage tank

130: solar heat collecting plate 140: circulation piping

150: first three-way valve 160: second three-way valve

170: branch piping 180: circulation pump

190 controller

Claims (5)

A shrinkage heat system having a heat pump and a heat storage tank having a first temperature sensor installed at an inner lower end and sensing and outputting a temperature of water in a lower portion, A solar heat collecting plate for condensing solar heat to produce hot water; A second temperature sensor which interconnects the inlet / outlet of the solar heat collecting plate and the upper and lower parts of the heat storage tank, is installed inside and senses and outputs the temperature of water, a heater attached to the outer surface to raise the temperature of the internal water, and an internal scale A circulation pipe having a scale removing device attached to the outer surface to remove the circulating pipe; A first three-way valve installed in the circulation pipe that is the upper portion of the heat storage tank; A second three-way valve installed in the circulation pipe which is a lower portion of the heat storage tank; A branch pipe connected to the first three-way valve and the second three-way valve; A circulation pump installed on the circulation pipe to circulate water in the circulation pipe; And When the heating is turned off, the heat pump is turned off, and the temperature of the water in the heat storage tank and the circulation pump is detected by the sensing value of the first temperature sensor. 2 off the three-way valve and the circulation pump to end the heating of the water to supply the water inside the heat storage tank to the solar heat collecting plate through the circulation pipe and to heat it, and then circulates again to the heat storage tank, and the sensing value of the second temperature sensor When the temperature of the water in the circulation pipe through the water temperature is less than 5 ℃ control the first three-way valve, the second three-way valve, the circulation pump and the heater to control the water inside the circulation pipe only the branch pipe and the circulation pipe While continuously circulating through, using a solar heat, characterized in that it comprises a controller for heating through the heater Awarded directly perform the heating and hot water thermal storage system. delete delete delete delete

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