KR102213179B1 - Multi-cycle heating and cooling system using multiple heating source - Google Patents

Abstract

According to one embodiment of the present invention, a multi-cycle cooling and heating device using a composite heat source comprises: a first heat source having a first temperature sensor and composed of geothermal heat; a second heat source having a second temperature sensor and composed of a heat source except the geothermal heat; a heat exchanging unit having an inlet side and an outlet side; and a control unit realizing a first cycle by allowing heat transfer fluid flowing from one heat source between the first heat source and the second heat source to flow to the inlet side and realizing a second cycle by allowing the heat transfer fluid flowing from the other heat source to flow to the outlet side, through relative temperature of the first heat source and the second heat source sensed through the first temperature sensor and the second temperature sensor.

Description

Multi-cycle heating and cooling system using a composite heat source{MULTI-CYCLE HEATING AND COOLING SYSTEM USING MULTIPLE HEATING SOURCE}

The present invention relates to a multi-cycle cooling and heating apparatus using a composite heat source.

Various research and development are in progress to utilize alternative energy resources, and a geothermal cooling and heating system using heat from the ground that maintains a relatively constant temperature without being greatly affected by the season is being developed.

More specifically, in order to receive cold or hot heat from an underground heat source, a heat exchange fluid must move between a load on the ground and a heat source in the ground to transfer heat. In order to receive sufficient heat from the ground, a heat exchange pipe must be buried to a depth of about 150 m to 200 m, and a facility must be provided so that the heat exchange fluid passes through the heat exchange pipe to absorb heat from the ground or release heat to the ground.

In addition, since a lot of energy is consumed to continuously circulate the heat exchange fluid, a heat storage tank is used to temporarily store the heat exchange fluid that has been heat-exchanged according to the heat exchange demand of the cooling and heating load.

However, if the capacity of the heat source in the ground is insufficient or the cycle cannot be properly implemented using the heat source, there is a problem that it cannot be implemented as an efficient cooling and heating device.

It is an object of the present invention to improve entropy efficiency by driving a plurality of cycles using a plurality of heat sources including geothermal heat, hydrothermal heat, and other available heat, and multi-cycle cooling and heating using a composite heat source capable of increasing cooling and heating efficiency To provide a device.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention that are not mentioned can be understood by the following description, and will be more clearly understood by examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

A multi-cycle air conditioning apparatus using a composite heat source according to an embodiment of the present invention includes a first heat source including a first temperature sensor and consisting of geothermal heat, a second heat source including a second temperature sensor and consisting of heat sources other than geothermal heat, The first heat source and the second heat source through a heat exchange unit including an inlet side and an outlet side, and the relative temperatures of the first heat source and the second heat source sensed through the first temperature sensor and the second temperature sensor. And a control unit configured to implement a first cycle by flowing the heat transfer fluid flowing from one heat source among the heat sources to the inlet side, and to implement the second cycle by flowing the heat transfer fluid flowing from the other heat source to the outlet side.

In addition, in the multi-cycle cooling and heating apparatus using a composite heat source, the second heat source is composed of one of groundwater, water heat, waste heat, and air heat, and the control unit selectively selects the heat transfer fluid flowing from the first heat source or the second heat source. It further comprises a switch to flow to the inlet side or the outlet side.

A multi-cycle cooling and heating apparatus using a composite heat source according to an embodiment of the present invention includes a heat exchange unit including a first heat exchange unit and a second heat exchange unit, a first heat source unit including a first temperature sensor and consisting of geothermal heat, and a second heat exchange unit. A compressor including a second heat source unit including a temperature sensor and comprising a heat source other than geothermal heat, a first compressor connected to the first heat exchange unit, and a second compressor connected to the second heat exchange unit, and the first heat exchange unit And an expansion valve including a first expansion valve connected to the first expansion valve, a second expansion valve connected to the second heat exchange part, and a switch part controlling the flow of the heat transfer fluid flowing to the first heat source part and the second heat source part.

In addition, in the multi-cycle cooling and heating apparatus using a composite heat source, when the temperature of the first heat source part detected by the first temperature sensor is higher than the temperature of the second heat source part detected through the second temperature sensor, the The heat transfer fluid discharged from the first heat source part flows through the second compressor to the second heat exchange part located at the outlet side of the heat exchange part, and the heat transfer fluid discharged from the second heat source part is transferred to the first compressor through the first compressor. The heating operation is implemented by flowing to the first heat exchange unit located at the inlet side of the heat exchange unit.

In addition, in a multi-cycle cooling and heating apparatus using a composite heat source, when the temperature of the first heat source part detected by the first temperature sensor is lower than the temperature of the second heat source part detected through the second temperature sensor, the The heat transfer fluid discharged from the first heat source part flows through the first compressor to the first heat exchange part located at the inlet side of the heat exchange part, and the heat transfer fluid discharged from the second heat source part is discharged through the second compressor. The heating operation is implemented by flowing to the second heat exchange unit located at the outlet side of the heat exchange unit.

In addition, in a multi-cycle cooling and heating apparatus using a composite heat source, each heat transfer fluid that has passed through the heat exchange unit passes through the expansion valve, flows to the first heat source unit or the second heat source unit through the switch unit, and the first temperature By comparing the temperature of the first heat source part detected through the sensor and the temperature of the second heat source part detected through the second temperature sensor, a first cycle is implemented with a relatively low temperature heat source part, and a relatively high temperature heat source part is used. Two cycles are implemented.

In addition, in a multi-cycle cooling and heating apparatus using a composite heat source, when the temperature of the first heat source part detected by the first temperature sensor is lower than the temperature of the second heat source part detected through the second temperature sensor, the The heat transfer fluid discharged from the second heat source part flows to the first heat exchange part located at the inlet side of the heat exchange part through the second expansion valve, and the heat transfer fluid discharged from the first heat source part passes through the first expansion valve. Through the flow to the second heat exchange unit positioned at the outlet side of the heat exchange unit, the cooling operation is implemented.

In addition, in the multi-cycle cooling and heating apparatus using a composite heat source, when the temperature of the first heat source part detected by the first temperature sensor is higher than the temperature of the second heat source part detected through the second temperature sensor, the The heat transfer fluid discharged from the first heat source part flows to the first heat exchange part located at the inlet side of the heat exchange part through the first expansion valve, and the heat transfer fluid discharged from the second heat source part passes through the second expansion valve. Through the flow to the second heat exchange unit positioned at the outlet side of the heat exchange unit, the cooling operation is implemented.

In addition, in a multi-cycle cooling and heating apparatus using a composite heat source, each heat transfer fluid that has passed through the heat exchange unit passes through the compressor, flows to the first heat source unit or the second heat source unit through the switch unit, and the first temperature sensor A first cycle is implemented with a relatively high temperature heat source by comparing the temperature of the first heat source portion detected through the temperature of the second heat source portion detected through the second temperature sensor, and a second cycle is implemented with a relatively low temperature heat source portion. The cycle is implemented.

Details of other embodiments are included in the detailed description and drawings.

According to the present invention, it is possible to obtain a multi-cycle air conditioner using a composite heat source capable of improving entropy efficiency and increasing cooling and heating efficiency.

In addition to the above-described effects, specific effects of the present invention will be described together while describing specific details for carrying out the present invention.

1 is a block diagram schematically showing the technical idea of a multi-cycle cooling and heating apparatus using a composite heat source according to the present invention.
FIG. 2 is a block diagram schematically illustrating a refrigeration cycle for implementing the multi-cycle cooling and heating apparatus shown in FIG. 1.
3 is a schematic configuration diagram of a multi-cycle cooling and heating apparatus according to an embodiment of the present invention.
4 is a block diagram schematically showing a first embodiment of a heating operation in the multi-cycle air conditioner of FIG. 3.
5 is a block diagram schematically showing a second embodiment of a heating operation in the multi-cycle air conditioner of FIG. 3.
7 is a block diagram schematically showing another technical idea of a multi-cycle cooling and heating apparatus using a composite heat source according to the present invention.
8 is a block diagram schematically showing a first embodiment of a cooling operation in the multi-cycle air conditioner in FIG. 7.
9 is a block diagram schematically showing a second embodiment of a cooling operation in the multi-cycle air conditioner of FIG. 7.

Accordingly, those of ordinary skill in the technical field to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar elements.

Hereinafter, it means that an arbitrary component is disposed on the "top (or lower)" of the component or the "top (or lower)" of the component, the arbitrary component is arranged in contact with the top (or bottom) of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when a component is described as being "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that "or, each component may be "connected", "coupled" or "connected" through other components.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a first technical idea of a multi-cycle cooling and heating apparatus using a composite heat source according to the present invention.

As shown, the multi-cycle cooling and heating apparatus 100 includes a first heat source 110, a second heat source 120, a control unit 130, and a heat exchange unit 140.

More specifically, when the multi-cycle cooling and heating apparatus 100 is implemented as a heating device, the first heat source 110 is made of a heat source using geothermal heat, and the second heat source 120 is made of a heat source other than geothermal heat. The second heat source 120 may be formed of one of groundwater, water heat, waste heat, and other heat sources including air heat.

The first temperature sensor 111 is coupled to the first heat source 110, and the second temperature sensor 121 is coupled to the second heat source 120.

The first temperature sensor 111 senses the temperature of the first heat source 110, and the second temperature sensor 121 senses the temperature of the second heat source 120.

The controller 130 compares the temperatures of the first heat source 110 and the second heat source 120 detected through the first temperature sensor 111 and the second temperature sensor 121. The switch 131 flows a heat transfer fluid flowing from a relatively low temperature heat source among the temperatures of the first heat source 110 and the second heat source 120 to the inlet side 141 of the heat exchange unit 140, and The heat transfer fluid flowing from the heat source of is flowed to the outlet side 142 of the heat exchange unit 140.

In addition, the multi-cycle air-conditioning apparatus using the composite heat source according to the present invention may include not only two heat sources, but also a plurality of heat sources, and may be implemented in multiple cycles respectively corresponding thereto.

The multi-cycle cooling and heating apparatus using the composite heat source according to the present invention is made as described above, and implements two cycles using heat sources other than geothermal and geothermal heat, and implements an efficient cycle using the capacity for each heat source. Entropy efficiency is improved. This will be described in more detail with reference to FIG. 2 below.

FIG. 2 is a graph schematically showing a heating cycle principle for implementing the multicycle air conditioner shown in FIG. 1.

More specifically, the multi-cycle air conditioner according to the present invention is implemented in two cycles for two heat sources.

When the first heat source is relatively low temperature than the second heat source, the heat transfer fluid of the first heat source is compressed from the first low pressure line (1) to the first high pressure line (2), and the heat transfer fluid of the second heat source is the second low pressure. It is compressed from the line 3 to the second high-pressure line 4.

In addition, the first high-pressure line 2 flows toward the inlet side of the heat exchanger to implement the first cycle 1C, and the second high-pressure line 4 flows toward the outlet side of the heat exchanger to implement the second cycle 2C.

Accordingly, the inlet side of the heat exchanger having a relatively low temperature is first heated through the first high-pressure line (2), and the outlet side of the heat exchanger having a relatively high temperature is heated secondarily through the second high-pressure line (4). (H) is implemented.

Accordingly, when the capacity of the heat source is insufficient, the multi-cycle cooling and heating apparatus according to the present invention uses an additional heat source, pressurizes the low-temperature heat transfer fluid to heat it first, and pressurizes the high-temperature heat transfer fluid to heat it secondarily. Efficiency and entropy efficiency can be improved.

Conversely, the second cycle (2C') is implemented by flowing the heat transfer fluid to the outlet side using a relatively low temperature heat source, and the first cycle (1C') is implemented by inducing the heat transfer fluid to the inlet side using the remaining heat source. .

Accordingly, the inlet side is cooled primarily by the first cycle 1C', and the outlet side is cooled secondarily by the second cycle 2C', thereby implementing the cooling operation (C).

3 is a schematic configuration diagram of a multi-cycle air conditioner according to an embodiment of the present invention.

As shown, the multi-cycle air conditioner 1000 includes a first heat source unit 1100, a second heat source unit 1200, a compressor 1300, 1400, a heat exchange unit 1500, and a switch unit 1610, 1620, 1630. , 1640) and expansion valves 1710 and 1720.

More specifically, the heat exchange part 1500 includes a first heat exchange part 1510 and a second heat exchange part 1520, and the first heat exchange part 1510 is disposed on the inlet side of the heat exchange part, and the second heat exchange part ( 1520) is disposed on the outlet side of the heat exchange part.

The switch units 1610, 1620, 1630 and 1640 include a first switch unit 1610, a second switch unit 1620, a third switch unit 1630, and a fourth switch unit 1640.

The first switch unit 1610 and the second switch unit 1620 each control the flow of the heat transfer fluid flowing to the first heat source unit 1100, and the third switch unit 1630 and the fourth switch unit 1640 Respectively control the flow of the heat transfer fluid flowing to the second heat source unit 1200.

The first heat source unit 1100 corresponds to a geothermal unit and includes a first heat source first cycle unit 1110, a first heat source second cycle unit 1120, and a first temperature sensor 1130.

The temperature of the first heat source unit 1100 is measured by the first temperature sensor 1130, and the first heat source unit 1100 is the first switch unit 1610 through a relative difference with respect to the second heat source unit 1200. , The second switch unit 1620 is selectively operated, and the heat transfer fluid flows to the first heat source first cycle unit 1110 or the first heat source second cycle unit 1120.

The second heat source unit 1200 may be formed by using a heat source other than geothermal heat, and one of groundwater heat, water heat, waste heat, and air heat adjacent to the first heat source unit 1100.

The second heat source unit 1200 includes a second heat source first cycle unit 1210, a second heat source second cycle unit 1220, and a second temperature sensor 1230.

The temperature of the second heat source unit 1200 is measured by the second temperature sensor 1230, and the first heat source unit 1100 is the third switch unit 1630 through a relative difference with respect to the second heat source unit 1200. And the fourth switch unit 1640 are selectively operated, and the heat transfer fluid flows to the second heat source first cycle unit 1210 or the second heat source second cycle unit 1220.

The compressors 1300 and 1400 include a first compressor 1300 connected to a first heat exchange unit and a second compressor 1400 connected to a second heat exchange unit.

In the first compressor 1300, a heat transfer fluid flowing through a low temperature heat source among the first heat source unit 1100 or the second heat source unit 1200 flows, and the high temperature heat transfer fluid compressed through the first compressor 1300 Flows to the first heat exchange part 1510 located at the inlet side of the heat exchange part 1500.

In the second compressor 1400, a heat transfer fluid flowing through a high-temperature heat source among the first heat source unit 1100 or the second heat source unit 1200 flows, and a high-temperature heat transfer fluid compressed through the second compressor 1400 Flows to the second heat exchange part 1520 positioned at the outlet side of the heat exchange part 1500.

Each heat transfer fluid that has passed through the heat exchange unit 1500 is transferred to the first heat source unit 1100 or the second heat source unit 1200 again through the expansion valves 1710 and 1720.

To this end, the expansion valve includes a first expansion valve 1710 and a second expansion valve 1720, the first expansion valve 1710 is connected to a first heat exchanger, and the second expansion valve 1720 is a second expansion valve. Connected to the heat exchanger.

At this time, by comparing the temperature of the first heat source unit 1100 detected through the first temperature sensor 1130 and the temperature of the second heat source unit 1200 detected through the second temperature sensor 1230, The switch units 1610, 1620, 1630, and 1640 are opened and closed to implement a first cycle 1C as a heat exchange unit and a second cycle 2C with a relatively high temperature heat exchange unit.

In addition, when the capacities of the first heat source unit and the second heat source unit are not uniform, it may be implemented by adjusting the operation rates of the first compressor and the second compressor.

In addition, depending on the heat source temperature condition, the lower heat source temperature can use a refrigerant (R410A, etc.) that has good performance at low temperatures, and the heat source temperature is high, the heat source temperature is adjusted for each cycle by using a refrigerant that is advantageous to high temperatures Therefore, you can increase the efficiency by using a different refrigerant.

4 is a block diagram schematically showing a first embodiment of a heating operation in the multi-cycle air conditioner of FIG. 3.

More specifically, the multi-cycle cooling and heating apparatus 1000 illustrates a first embodiment in which the first heat source unit 1100 is higher temperature than the second heat source unit 1200.

That is, the first heat source unit 1100 detected through the first temperature sensor 1130 is higher than the second heat source unit 1200 detected through the second temperature sensor 1230.

In this case, the heat transfer fluid discharged from the first heat source unit 1100 flows through the second compressor 1400 to the second heat exchange unit 1520 located at the outlet side of the heat exchange unit 1500.

In addition, the heat transfer fluid discharged from the second heat source unit 1200 flows through the first compressor 1300 to the first heat exchange unit 1510 located at the inlet side of the heat exchange unit 1500.

Accordingly, the first cycle 1C is implemented by the heat transfer fluid flowing from the second heat source unit 1200 to the first heat exchange unit 1510, and the second heat exchange unit 1520 through the first heat source unit 1100. The second cycle 2C is implemented by the heat transfer fluid flowing to ).

Next, each heat transfer fluid that has passed through the heat exchange unit 1500 passes through the expansion valves 1710 and 1720, and the temperature of the first heat source unit 1100 and the second temperature detected through the first temperature sensor 1130 The temperature of the second heat source unit 1200 detected through the temperature sensor 1230 is compared and flows to the relatively low temperature first heat exchange unit to implement the first cycle 1C, and flows to the relatively high temperature second heat exchange unit. And the second cycle 2C is implemented.

5 is a block diagram schematically showing a second embodiment of a heating operation in the multi-cycle air conditioner of FIG. 3.

More specifically, the multi-cycle air conditioner 1000 shows a second embodiment in which the second heat source unit 1200 is higher than the first heat source unit 1100.

That is, the temperature of the second heat source unit 1200 detected through the second temperature sensor 1230 is higher than the temperature of the first heat source unit 1100 detected through the first temperature sensor 1130.

At this time, the heat transfer fluid discharged from the first heat source unit 1100 flows through the first compressor 1300 to the first heat exchange unit 1510 located at the inlet side of the heat exchange unit 1500.

In addition, the heat transfer fluid discharged from the second heat source unit 1200 flows through the second compressor 1400 to the second heat exchange unit 1520 located at the outlet side of the heat exchange unit 1500.

Accordingly, the first cycle 1C is implemented by the heat transfer fluid flowing from the first heat source unit 1100 to the first heat exchange unit 1510, and the second heat exchange unit 1520 through the second heat source unit 1200 The second cycle 2C is implemented by the heat transfer fluid flowing to ).

Next, each heat transfer fluid that has passed through the heat exchange unit 1500 passes through the expansion valves 1710 and 1720, and the temperature of the first heat source unit 1100 and the second temperature detected through the first temperature sensor 1130 By comparing the temperature of the second heat source unit 1200 detected by the temperature sensor 1230, it flows to the first heat exchange unit, which is relatively low temperature, to implement the first cycle (1C), and flows to the second heat exchange unit, which is relatively high temperature. To implement the second cycle (2C).

7 is a block diagram schematically showing another technical idea of a multi-cycle cooling and heating apparatus using a composite heat source according to the present invention.

As shown, the multi-cycle cooling and heating apparatus 200 includes a first heat source 210, a second heat source 220, a control unit 230, and a heat exchange unit 240.

More specifically, when the multi-cycle air conditioner 200 is implemented as a cooling device, the first heat source 210 includes a geothermal unit, the second heat source 220 is formed of a heat source other than geothermal heat, and the second heat source 220 ) Can be made of one of groundwater, water heat, waste heat, and air heat.

A first temperature sensor 211 is coupled to the first heat source 210, and a second temperature sensor 221 is coupled to the second heat source 220.

The first temperature sensor 211 senses the temperature of the first heat source 210, and the second temperature sensor 221 senses the temperature of the second heat source 220.

The control unit 230 compares the temperatures of the first heat source 210 and the second heat source 220 detected through the first temperature sensor 211 and the second temperature sensor 221, and the relative temperature through the switch 231 The heat transfer fluid flowing from the high temperature heat source is flowed to the inlet side 241 of the heat exchange unit 240, and the heat transfer fluid flowing from the relatively low temperature heat source is flowed to the outlet side 142 of the heat exchange unit 140 .

As described above, the multi-cycle air conditioner using the composite heat source according to the present invention drives two cycles using heat sources other than geothermal and geothermal heat, and efficiently realizes the capacity for each heat source to improve entropy efficiency. I can.

8 is a block diagram schematically showing a first embodiment of a cooling operation in the multi-cycle air conditioner in FIG. 7.

More specifically, the multi-cycle cooling and heating apparatus 2000 illustrates a first embodiment in which the temperature of the first heat source unit 2100 is higher than the temperature of the second heat source unit 2200.

That is, the first heat source part 2100 detected through the first temperature sensor 2130 is higher than the second heat source part 2200 detected through the second temperature sensor 2230.

At this time, the heat transfer fluid discharged from the first heat source unit 2100 flows through the first expansion valve 2710 to the first heat exchange unit 2510 located at the inlet side of the heat exchange unit 2500.

In addition, the heat transfer fluid discharged from the second heat source unit 2200 flows through the second expansion valve 2720 to the second heat exchange unit 2520 located at the outlet side of the heat exchange unit 2500.

Accordingly, the first cycle 1C is implemented by the heat transfer fluid flowing to the first heat exchange unit 2510 through the first heat source unit 2100, and the second heat exchange unit ( The second cycle 2C is implemented by the heat transfer fluid flowing to 2520).

Next, each heat transfer fluid that has passed through the heat exchange unit 2500 passes through the compressors 2300 and 2400, flows to the first heat source unit or the second heat source unit through the switch unit, and passes through the first temperature sensor 2130. The temperature of the detected first heat source 2100 is compared with the temperature of the second heat source 2200 detected through the second temperature sensor 2230, and flows to the relatively high temperature first heat source and flows to the first cycle (1C). ), and flows to a relatively low temperature second heat source to implement a second cycle 2C.

9 is a block diagram schematically showing a second embodiment of a cooling operation in the multi-cycle air conditioner of FIG. 7.

More specifically, the multi-cycle cooling and heating apparatus 2000 shows a second embodiment in which the temperature of the first heat source unit 2100 is lower than that of the second heat source unit 2200.

That is, the temperature of the first heat source unit 2100 detected through the first temperature sensor 2130 is lower than the temperature of the second heat source unit 2200 detected through the second temperature sensor 2230.

At this time, the heat transfer fluid discharged from the second heat source part 2200 flows through the first expansion valve 2710 to the first heat exchange part 2510 located at the inlet side of the heat exchange part 2500.

In addition, the heat transfer fluid discharged from the first heat source unit 2100 flows through the second expansion valve 2720 to the second heat exchange unit 2520 positioned at the outlet side of the heat exchange unit 2500.

Accordingly, the first cycle 1C is implemented by the heat transfer fluid flowing from the second heat source part 2200 to the first heat exchange part 2510, and the second heat exchange part 2520 through the first heat source part 2100 The second cycle 2C is implemented by the heat transfer fluid flowing to ).

Next, each heat transfer fluid that has passed through the heat exchange unit 2500 passes through the compressors 2300 and 2400, and the temperature of the first heat source unit 2100 and the second temperature detected through the first temperature sensor 2130 By comparing the temperature of the second heat source unit 2200 detected through the sensor 2230, it flows to a relatively high temperature first heat source to implement a first cycle 1C, and flows to a relatively low temperature second heat source unit. It is implemented in a second cycle (2C).

In the above, a preferred embodiment of the present invention has been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains, the present invention in other specific forms without changing the technical idea or essential features. It will be appreciated that it can be implemented. Therefore, it should be understood that the exemplary embodiment described above is illustrative in all respects and is not limiting.

100: multicycle air conditioner 110: first heat source
111: first temperature sensor 120: second heat source
121: second temperature sensor 130: control unit
131: switch 140: heat exchange part
141: entrance side 142: exit side
200: multicycle air conditioner 210: first heat source
211: first temperature sensor 220: second heat source
221: second temperature sensor 230: control unit
231: switch 240: heat exchange part
241: entrance side
1000: multi-cycle air conditioner 1100: first heat source
1110: first heat source first cycle unit 1120: first heat source second cycle unit
1130: first temperature sensor 1200: second heat source
1210: second heat source first cycle unit 1220: second heat source second cycle unit
1230: second temperature sensor 1300: compressor
1400: second compressor 1500: heat exchange unit
1510: first heat exchange part 1520: second heat exchange part
1610: first switch unit 1620: second switch unit
1630: third switch unit 1640: fourth switch unit
1710: first expansion valve 1720: second expansion valve
2000: multi-cycle air conditioner 2100: first heat source
2130: first temperature sensor 2200: second heat source
2230: second temperature sensor 2500: heat exchange part
2510: first heat exchange part 2520: second heat exchange part
1300, 1400: compressor 2710: first expansion valve
2720: second expansion valve 1710, 1720: expansion valve
2300, 2400: compressor 1610, 1620, 1630, 1640: switch unit

Claims (9)

A first heat source comprising a first temperature sensor and consisting of geothermal heat;
A second heat source comprising a second temperature sensor and comprising a heat source other than geothermal heat;
A heat exchange unit including an inlet side and an outlet side; And
Through the relative temperature of the first heat source and the second heat source sensed through the first temperature sensor and the second temperature sensor, the heat transfer fluid flowing from one of the first heat source and the second heat source is And a controller configured to implement a first cycle by flowing to the inlet side and to implement a second cycle by flowing a heat transfer fluid flowing from another heat source to the outlet side.
Multicycle cooling and heating system using a composite heat source.
The method of claim 1,
The second heat source is composed of one of groundwater, water heat, waste heat, and air heat, and the control unit further comprises a switch for selectively flowing the heat transfer fluid flowing from the first heat source or the second heat source to the inlet side or the outlet side. Included
Multicycle cooling and heating system using a composite heat source.
A heat exchange unit including a first heat exchange unit and a second heat exchange unit;
A first heat source including a first temperature sensor and made of geothermal heat;
A second heat source unit including a second temperature sensor and comprising a heat source other than geothermal heat;
A compressor including a first compressor connected to the first heat exchange part and a second compressor connected to the second heat exchange part;
An expansion valve including a first expansion valve connected to the first heat exchange part and a second expansion valve connected to the second heat exchange part; And
Including a switch for controlling the flow of the heat transfer fluid flowing to the first heat source portion and the second heat source portion
Multicycle cooling and heating system using a composite heat source.
The method of claim 3,
When the temperature of the first heat source part detected through the first temperature sensor is higher than the temperature of the second heat source part detected through the second temperature sensor,
The heat transfer fluid discharged from the first heat source part flows through the second compressor to the second heat exchange part located at the outlet side of the heat exchange part,
The heat transfer fluid discharged from the second heat source unit flows through the first compressor to the first heat exchange unit located at the inlet side of the heat exchange unit to implement a heating operation.
Multicycle cooling and heating system using a composite heat source.
The method of claim 3,
When the temperature of the first heat source part detected through the first temperature sensor is lower than the temperature of the second heat source part detected through the second temperature sensor,
The heat transfer fluid discharged from the first heat source part flows through the first compressor to the first heat exchange part located at the inlet side of the heat exchange part,
The heat transfer fluid discharged from the second heat source unit flows through the second compressor to a second heat exchange unit positioned at the outlet side of the heat exchange unit to implement a heating operation.
Multicycle cooling and heating system using a composite heat source.
The method according to claim 4 or 5,
Each heat transfer fluid passing through the heat exchange part passes through the expansion valve, flows to the first heat source part or the second heat source part through the switch part, and the temperature of the first heat source part detected by the first temperature sensor and the By comparing the temperature of the second heat source detected by the second temperature sensor, the first cycle is implemented with a relatively low temperature heat source, and a second cycle is implemented with a relatively high temperature heat source.
Multicycle cooling and heating system using a composite heat source.
The method of claim 3,
When the temperature of the first heat source part detected through the first temperature sensor is lower than the temperature of the second heat source part detected through the second temperature sensor,
The heat transfer fluid discharged from the second heat source part flows through the second expansion valve to the first heat exchange part located at the inlet side of the heat exchange part,
The heat transfer fluid discharged from the first heat source part flows through the first expansion valve to the second heat exchange part located at the outlet side of the heat exchange part to implement a cooling operation.
Multicycle cooling and heating system using a composite heat source.
The method of claim 3,
When the temperature of the first heat source part detected through the first temperature sensor is higher than the temperature of the second heat source part detected through the second temperature sensor,
The heat transfer fluid discharged from the first heat source part flows through the first expansion valve to the first heat exchange part located at the inlet side of the heat exchange part,
The heat transfer fluid discharged from the second heat source unit flows through the second expansion valve to a second heat exchange unit positioned at the outlet side of the heat exchange unit to implement a cooling operation.
Multicycle cooling and heating system using a composite heat source.
The method according to claim 7 or 8,
Each heat transfer fluid passing through the heat exchange part passes through the compressor, flows to the first heat source part or the second heat source part through the switch part, and the temperature of the first heat source part detected through the first temperature sensor and the first 2 By comparing the temperature of the second heat source detected through a temperature sensor, the first cycle is implemented with a relatively high temperature heat source, and a second cycle is implemented with a relatively low temperature heat source.
Multicycle cooling and heating system using a composite heat source.

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