KR20100134426A - Air handling unkt system of lowering the energy consumption using ground source heat pump and heat recovery coil - Google Patents

Abstract

PURPOSE: An energy-saving air conditioner of a heat pump using geothermal heat and waste heat is provided to collect heat energy from cold air in the summer and to collect heat energy from hot air in the winter. CONSTITUTION: An energy-saving air conditioner of a heat pump using geothermal heat and waste heat comprises an outdoor air room(100) with an outdoor air inlet(101), an air supplying room(110) with a supplied air outlet(111), an air exhaust room(130) with an air exhaust outlet(131), a ventilation room(140) with a ventilation inlet(141), a first heat exchanging unit(250) for cool/hot air, a second heat exchanging unit(340) for outdoor air, and a third heat exchanging unit(370).

Description

Energy-saving heat pump air conditioner using geothermal and waste heat {air handling unkt system of lowering the energy consumption using ground source heat pump and heat recovery coil}

The present invention relates to an energy-saving heat pump air conditioner using geothermal and waste heat, and in particular, the heating and cooling load generated in the process of ensuring that the interior space of a commercial building is always provided with a comfortable space through the introduction of external air and ventilation of indoor air discharge. To save energy.

Generally, cooling the room by a repetitive action of sucking indoor hot air and exchanging heat with a low temperature refrigerant and then discharging it to the outside is called air conditioning.

Air conditioning takes the heat from the air as the refrigerant evaporates as it passes through the evaporator coil, which is in contact with the room air, and when the cool air reaches its saturation point, moisture condenses on the fins attached to the evaporator coil. At the same time, the condensed water is discharged out of the fins, and cold and dry air is introduced into the room by the blower for cooling.

At this time, the evaporated refrigerant enters the compressor and is compressed through the condensation coil in contact with the outside air, and the absorbed heat is released during the process of condensing back into the liquid state. In order to continue, the process of circulating back to the evaporator coil is repeated.

On the other hand, some of the air conditioner is provided with a plurality of coils have been proposed in the winter, that is, a heat pump (heat pump) to heat the interior to condense the refrigerant by the internal coil has been proposed.

When the air conditioner having the cooling and heating functions is installed in the building, energy loss is generated in the ventilation process that is discharged from the room at the same time as the amount of air introduced at the same time as the amount of air is periodically introduced to improve the indoor air quality. At the same time, there was a problem that the load occurs in cooling and heating.

In the case of summer cooling, as the outside temperature is higher than the room temperature, the indoor air having a lower temperature is discharged to the outside during the ventilation process and the outdoor air having a high temperature enters the room, and thus the air conditioner is continuously In the case of winter heating, the outdoor temperature is lower than the room temperature, so that the air conditioner is continuously operated in the same manner as the air conditioner in order to increase the temperature at the same time as the outdoor air enters the room. There is a load on the heating, which caused another problem that the additional cost is consumed more energy than necessary to drive the air conditioner.

The present invention is to recover the energy contained in the cold, hot air discharged to the outside in the process of making the interior space of the commercial building to always provide a comfortable space through the introduction of the outside air and the ventilation of the indoor air discharge, by reusing, At the same time, it reduces energy consumption and prevents the heating and cooling loads generated during the ventilation process.

According to the present invention, an air supply room 110 having an air supply outlet 111 is partitioned into an air supply partition wall 120 to one side of the outdoor air room 100 having the outside air intake port 101, and exhausted to the other side of the external air room 100. An exhaust room 130 having an outlet 131 and a ventilation room 140 having a ventilation inlet 141 are partitioned by a ventilation partition 150 and generate cold temperature toward the air supply partition wall 120 of the outside air chamber 100. The cold and hot heat exchanger 250 connected to the unit 200 is coupled to the outside air heat exchanger 340 and the exhaust heat exchanger respectively connected to the geothermal heat exchanger 300 at the outside air suction port 101 and the exhaust outlet 131. In the energy-saving heat pump air conditioner (A) using geothermal heat and waste heat configured to be coupled to the unit 370, the geothermal heat exchanger 300 is a heat collecting tube inserted into the heat exchange pipe 310 inserted into the borehole 311 is fixed to the stopper 312 to be drawn out to the top, the heat collecting tub drawn through the stopper 312 One side of the 311 is connected to the discharge side of the geothermal circulation pump 320, the first switching valve 330 is connected to the other side of the collecting tube 311, the outside air to the first switching valve 330 The inflow side of the heat exchange unit 340 is connected, the discharge side of the external air heat exchange unit 340 is connected to the first switching valve 330 via the second switching valve 350, the second A condensation tube 360 connected to the inlet side of the geothermal circulation pump 320 is connected between the switching valve 350 and the first switching valve 330.

The present invention is to improve the interior space of a commercial building to recover the heat energy contained in the cold air discharged to the outside in the summer, in the summer during the introduction of outside air and ventilation of indoor air discharge, in the case of winter In addition, by recovering the heat energy contained in the warmth discharged to the outside to reuse the heat energy recovered, it is possible to reduce the load generated during cooling and heating.

In addition, through this to ensure that the interior space of the building is always maintained in a comfortable state, it is possible to obtain more effective to increase the efficiency of the work.

And it is possible to recover the heat energy contained in the cold, hot air discharged to reduce the load generated during the cooling, heating and at the same time can further obtain the effect of saving energy.

An embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of an energy-saving heat pump air conditioner using geothermal and waste heat according to the present invention, Figure 2 is a perspective view showing a part of the energy-saving heat pump air conditioner using geothermal and waste heat according to the present invention. 3 is a rear perspective view showing a part of an energy saving heat pump air conditioner using geothermal and waste heat according to the present invention, and FIG. 4 is a part of an energy saving heat pump air conditioner using geothermal and waste heat according to the present invention. It is a cross-sectional view showing the.

Heat pump air conditioner (A) according to the present invention, as shown in Figures 1 to 4, the outside air chamber 100, the air supply room 110, the exhaust room 130, the ventilation room 140, the cold temperature generation The unit 200, the cold and hot heat exchanger 250, the geothermal heat exchanger 300, the outside air heat exchanger 340, and the exhaust heat exchanger 370 are configured to be organically coupled.

Here, the outdoor air chamber 100 is configured such that the outdoor air intake port 101 through which outdoor air (OA) is sucked is coupled to a side having a predetermined space therein.

The air supply room 110 is formed on one side of the outdoor air chamber 100 to remove foreign substances such as dust contained in the outdoor air introduced into the outdoor air chamber 100, and at the same time, heat exchange is performed with cold or warm air to supply air to the indoor space ( SA: Supply Air)

 To this end, the air supply room 110 is formed to be partitioned by the air supply partition wall 120 that is provided to one side of the outside air chamber 100, the air supply outlet 111 is coupled to the side of the baking room 110 is It is configured to

The air supply partition wall 120 is formed with a first through hole 121 having a predetermined diameter so that one side of the air supply duct 122 is coupled, and the air supply blower 160 is sucked to the other side of the air supply duct 121. The side is coupled is configured to be easily introduced into the air supply blower 160, the heat exchanged outside air sucked into or introduced into the outside air chamber (100).

The filtering unit 170 is coupled to the outside air inlet side of the cold and hot heat exchanger 250 to remove foreign substances such as dust contained in the air introduced into the outside air room 100, and the ventilation partition wall 150 to be described later. The second through-hole 151 is formed to be coupled to the discharge side of the ventilation blower 180 is configured to be easily discharged through the exhaust chamber 130 and the exhaust outlet 131.

The exhaust room 130 is formed on the other side of the outside air chamber 100 as having a function of exhausting the return air (RA) or the introduced indoor air (EA) through the ventilation room 140. The exhaust outlet 131 is configured to be coupled to the side surface.

The ventilation room 140 is configured to be partitioned by the ventilation partition wall 150 provided to one side of the exhaust room 130 to directly suck the indoor air, and the ventilation suction port 141 is coupled to the side wall. Consists of.

Cold air or hot air in the process of passing the outside air introduced into the outside air room 100 by combining the cold and hot heat exchanger 250 connected to the cold temperature generating unit 200 toward the air supply partition wall 120 of the outside air room 100. Heat exchanger is coupled to the outside air inlet 101 and the exhaust outlet 131, respectively, the outside air heat exchanger 340 and the exhaust heat exchanger 370 connected to the geothermal heat exchanger 300 are respectively sucked and discharged during summer and winter Paper is constructed to recover the heat energy contained in the cold and warm air.

The cold and cold generation unit 200 is configured to be used for the purpose of cooling in the summer season and to provide a function that can be used for the heating of the winter season given a change in the refrigerant flow in the summer and winter.

The cold / warming unit 200 having such a function is coupled to a third switching valve 220 which is a multi-directional valve having a function of changing a flow of refrigerant to an inlet side and an outlet side of the compressor 210 driven by a motor. One side of the third switching valve 220 is connected to the inlet side of the condenser 230 connected to the expansion valve 240, the inlet of the cold, hot heat exchanger 250 to the expansion valve 240 The side is configured to be connected.

The other side of the third switching valve 220 is configured to be connected to the discharge side of the cold, hot heat exchange unit (250).

The condenser 230 is configured to store the moisture or water generated during the heat exchange process by inserting the condensation tube 360 into the coil wound inside, the coil of the condenser 230 wound in the coil form The outside is coupled so that the condensation cap 231 having an open top shape is wrapped.

The geothermal heat exchanger 300 allows for cooling in a state in which the compressor 210 is not operated by using the low temperature of the geothermal circulating water at the beginning of the summer season and at the same time the high temperature of the geothermal circulating water at the beginning of the winter season. By using the compressor 210 without operating the heating, and in the middle and end of the summer and winter, the heat energy contained in the cold and hot air discharged by the ventilation can be recovered and reused in the ventilation process. It is designed to provide the function to prevent the overload generated and the increase of operating cost due to the overload.

The geothermal heat exchanger 300 having such a function allows the heat collecting pipe 311 to be inserted into the heat exchange pipe 310 inserted into the borehole drilled in the ground or the ground, and the heat exchange pipe having the heat collecting tube 311 inserted thereinto ( 310, the collecting tube 311 is fixed to the cap 312 to be drawn out.

One side of the collecting tube 311 drawn out through the stopper 312 is connected to the discharge side of the geothermal circulation pump 320, and the first switching valve capable of switching in multiple directions to the other side of the collecting tube 311. 330 is connected.

The inlet side of the outside air heat exchanger 340 is connected to the first switch valve 330, and the outlet side of the outside air heat exchanger 340 is via the second switch valve 350 capable of multi-directional switching. It is connected to the first switching valve 330.

The condensation tube 360 connected to the inflow side of the geothermal circulation pump 320 is connected between the second switching valve 350 and the first switching valve 330.

The inlet side of the exhaust heat exchanger 370 coupled to the exhaust outlet 131 is connected to the second switch valve 350, and the outlet side of the exhaust heat exchanger 370 is connected to the second switch valve 350. It is connected between the first switching valve 330 is configured to be geothermal circulating water via or bypass the exhaust heat exchange unit (370).

The external air heat exchanger 340 and the exhaust heat exchanger 350 are coupled to each other so that the hollow pipes 380 are arranged in a zigzag form between the support pieces 381, and both sides of the support pieces 381 are respectively air Coupled to the inlet 101 and the exhaust outlet 131 is configured to allow heat exchange in the process of the outside air is introduced or the internal air is discharged.

The process of recovering waste heat in the process of discharging external air and internal air while cooling and heating is performed using the heat pump air conditioner A having the above configuration is as follows.

First, when the cooling air is supplied to the room during summer cooling, the supply air temperature is maintained at 15 ° C., and when the external air temperature is about 30% of the air supply air flow rate to maintain 32 ° C., the ventilation blower 180 The indoor air is introduced through the ventilation suction opening 141 by the suction force and the discharge force caused by the driving, and the introduced indoor air is formed in the discharge port of the ventilation blower 180 and the ventilation partition wall 150. After passing through the exhaust room 130 through the exhaust outlet 131 is discharged to the outside while the ventilation is made.

At the same time, the outside air is introduced into the outside air room 100 through the outside air suction port 101 provided in the outside air room 100 by the suction force and the discharge power of the air supply blower 160, and introduced into the outside air room 100. The external air is removed from the foreign matter such as dust contained in the air in the process of passing through the filtering unit 170, and the air from which the foreign matter is removed is cooled and cooled in the process of passing through the cold and hot heat exchanger 250 at a low temperature. Will be maintained.

The cooled low-temperature air passes through the first through hole 121 formed in the air supply partition wall 120, the air supply duct 122, and the air supply blower 160, and then opens the air supply outlet 111 provided in the air supply room 110. As it is discharged to the indoor space through it can be cooled.

At this time, the geothermal circulating water cooled to low temperature by the heat collecting tube 311 inserted into the heat exchange pipe 310 of the geothermal heat exchange unit 300 is the first switching valve by the suction power and the earth output of the geothermal circulation pump 320. In the process of passing through the outside air heat exchanger 340 provided at the outside air intake port 101 via 330, heat exchange with the outside air introduced into the outside air intake port 101, that is, pre-cooling is performed, and thus the air shown in FIG. As shown in the diagram, about 13% of the air conditioning energy can be saved.

Next, the temperature of the geothermal circulating water rises while the external air is precooled, but the geothermal circulating water whose temperature is increased is the exhaust heat exchanger 370 provided at the exhaust outlet 131 through the second switching valve 350. In the process of passing through), as the heat is cooled by heat exchange, the temperature of the geothermal circulating water is recovered. Thereafter, the geothermal circulating water whose temperature is restored is smoothly heat-exchanged in the condenser 230 in the process of passing through the condensation tube 360.

On the other hand, when the supply air temperature supplied to the room for the winter heating is maintained at 30 ℃, 30% of the air supply air flows to maintain the outside air temperature is -10 ℃, ventilation blower (180 The indoor air is introduced through the ventilation suction opening 141 by the suction force and the discharge force due to the driving of the air), and the introduced indoor air is formed in the discharge port of the ventilation blower 180 and the ventilation partition wall 150. After passing through the exhaust room 130 through 151, the exhaust is discharged to the outside through the exhaust outlet 131, and ventilation is performed.

At the same time, the outside air is introduced into the outside air room 100 through the outside air suction port 101 provided in the outside air room 100 by the suction force and the discharge power of the air supply blower 160, and introduced into the outside air room 100. The external air is removed from the foreign matter such as dust contained in the air in the process of passing through the filtering unit 170, the air from which the foreign matter is removed is heated in the process of passing through the cold, hot heat exchange unit 250 is a high temperature state Will be maintained.

The heated air passes through the first through hole 121 formed in the air supply partition wall 120, the air supply duct 122, and the air supply blower 160, and is then indoors through the air supply outlet 111 provided in the air supply room 110. As it is discharged into the space, it can be heated.

At this time, the geothermal circulating water heated to a high temperature by the heat collecting tube 311 inserted into the heat exchange pipe 310 of the geothermal heat exchange unit 300 is the first switching valve by the suction power and the earth output of the geothermal circulation pump 320. In the process of passing through the outside air heat exchanger 340 provided at the outside air intake port 101 via 330, heat exchange with the outside air introduced into the outside air intake port 101, that is, preheating is performed, thereby causing the air illustrated in FIG. 6. As shown in the diagram, about 33% of the air conditioning energy can be saved.

Next, in the process of preheating the external air, the temperature of the geothermal circulating water is lowered, but the geothermal circulating water having the lowered temperature is provided in the exhaust heat exchanger 370 provided in the exhaust outlet 131 through the second switching valve 350. As it is reheated by heat exchange in the course of passing through, the temperature of the geothermal circulating water is recovered. Thereafter, the geothermal circulating water whose temperature is restored is smoothly heat exchanged in the condenser 230 in the process of passing through the condensation tube 360.

On the other hand, when the temperature of the outside air rises to 27 ° C. in the afternoon, which is a season of change, and cooling is temporarily necessary, the geothermal circulation pump 320 does not operate the compressor 210 of the cold / temperature generator 200. Pre-cooling to circulate only the circulating water and at the same time to cool the supply air sucked into the outside air chamber 100 through the outside air inlet 101, and to supply the cooled supply air to the room by the air supply blower 160 ( Free cooling) can be performed. At this time, the air conditioning energy saved by the precooling may further obtain the effect as shown in FIG.

1 is a block diagram of an energy-saving heat pump air conditioner using geothermal and waste heat according to the present invention.

Figure 2 is a perspective view showing a part of the energy saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

Figure 3 is a rear perspective view showing a part of the energy saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

Figure 4 is a cross-sectional view showing a part of the energy-saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

Figure 5 is an exemplary view showing an air line at the time of cooling of the energy-saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

Figure 6 is an exemplary view showing an air line during heating of the energy-saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

Figure 7 is an exemplary view showing an air line in the air conditioner cooling state of the energy-saving heat pump air conditioner using geothermal and waste heat in accordance with the present invention.

<Brief description of symbols for the main parts of the drawings>

100: outside room 101: outside air intake

110: air supply room 111: air supply outlet

120: supply bulkhead 130: exhaust room

131: exhaust outlet 140: ventilation room

141: ventilation inlet 150: ventilation bulkhead

200: cold and hot generating unit 250: cold, hot heat exchange unit

300: geothermal heat exchanger 310: heat exchange pipe

311: collecting tube 312: stopper

320: geothermal circulation pump 330: first switching valve

340: outside air heat exchanger 350: second switching valve

360: condensation tube 370: exhaust heat exchange unit

Claims (5)

The air supply room 110 having the air supply outlet 111 to one side of the outdoor air chamber 100 having the outside air intake port 101 is partitioned into the air supply partition wall 120, and the exhaust outlet 131 is directed to the other side of the outdoor air chamber 100. Ventilation room 130 having a ventilator 130 and a ventilation inlet 141 having a ventilation inlet 141 is divided into a ventilation partition 150, the cold temperature generating unit 200 toward the air supply partition wall 120 of the outside air chamber (100). The cold and hot heat exchanger 250 connected to the outside is coupled, and the outside air heat exchanger 340 and the exhaust heat exchanger 370 connected to the geothermal heat exchanger 300 at the outside air intake 101 and the exhaust outlet 131, respectively. In the energy-saving heat pump air conditioner (A) using geothermal and waste heat configured to be coupled to, The geothermal heat exchanger 300 is fixed with a stopper 312 so that the heat collecting tube 311 inserted into the heat exchange pipe 310 inserted into the borehole is drawn out to the top, and withdrawn through the stopper 312. One side of the collecting tube 311 is connected to the discharge side of the geothermal circulation pump 320, the first switching valve 330 is connected to the other side of the collecting tube 311, the first switching valve 330 Is connected to the inlet side of the outside air heat exchanger 340, the outlet side of the outside air heat exchanger 340 is connected to the first switch valve 330 via the second switch valve 350, Energy saving type heat pump air using geothermal and waste heat, characterized in that the condensation tube 360 connected to the inlet side of the geothermal circulation pump 320 is connected between the second switching valve 350 and the first switching valve 330. Conditioner. The method of claim 1, The inlet side of the exhaust heat exchanger 370 coupled to the exhaust outlet 131 is connected to the second switch valve 350, and the outlet side of the exhaust heat exchanger 370 is connected to the second switch valve 350. Energy-saving heat pump air conditioner using geothermal and waste heat, characterized in that connected between the first switching valve (330). The method according to claim 1 or 2, The external air heat exchanger 340 and the exhaust heat exchanger 370 are coupled to each other so that the hollow pipes 380 are arranged in a zigzag form between the support pieces 381, and both sides of the support pieces 381 are respectively air Energy-saving heat pump air conditioner using geothermal and waste heat, characterized in that coupled to the inlet 101 and exhaust outlet 131. The method of claim 1, The cold / warm generator 200 has a third switch valve 220 is coupled to the inlet and discharge side of the compressor 210, one side of the third switch valve 220 is a condenser connected to the expansion valve 240 The inlet side of the 230 is connected, the inlet side of the cold, hot heat exchanger 250 is connected to the expansion valve 240, the other side of the third switching valve 220 is cold, hot heat exchanger Is connected to the discharge side of the 250, the condenser 230 is inserted into the condenser tube 360 is wound inside the coil form, the outside of the coil condenser 230 wound in the coil form Energy-saving heat pump air conditioner using geothermal and waste heat, characterized in that the condensation cap 231 having an open form is coupled to surround. The method according to claim 1 or 4, The first through hole 121 is formed in the air supply partition wall 120 so that one side of the air supply duct 122 is coupled, and the suction side of the air supply blower 160 is coupled to the other side of the air supply duct 122. The filtering unit 170 is coupled to the outside air inlet side of the cold and hot heat exchanger 250, and a second through hole 151 is formed in the ventilation partition wall 150 to discharge the ventilation blower 180. Energy-saving heat pump air conditioner using geothermal and waste heat, characterized in that combined.

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