KR100634811B1 - Cogeneration system - Google Patents

Abstract

A cogeneration system is provided to improve the use performance by installing the stirling engine at the heat medium circulation path to receive the heat from the heat medium. A cogeneration system comprises a generator(50); a driving source driving the generator and generating the heat; a heat pump-type air conditioner containing a compressor(83), a four-way valve(84), an outdoor heat exchanger(85), an indoor heat exchanger(87), an outdoor expansion valve(86), and an indoor expansion valve(88); and an additional compression unit compressing the refrigerant of the heat pump-type air conditioner by using the waste heat generated at the driving source. The additional compression unit is a stirling engine(70) or a turbine engine receiving the heat and generating the power.

Description

Cogeneration System {Cogeneration system}

1 is a schematic diagram of a cogeneration system according to the prior art,

2 is a schematic diagram of a cooling operation of a cogeneration system according to a first embodiment of the present invention;

3 is a schematic diagram when heating operation of a cogeneration system according to a first embodiment of the present invention,

4 is a schematic diagram of a cooling operation of a cogeneration system according to a second embodiment of the present invention;

5 is a schematic diagram of heating operation of a cogeneration system according to a second embodiment of the present invention.

6 is a schematic view of the cogeneration system according to the third embodiment of the present invention in a cooling operation;

7 is a schematic diagram of heating operation of a cogeneration system according to a third embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

50: generator 52: engine

54: fuel inlet 56: exhaust pipe

60, 91: coolant heat exchanger 62: coolant line

64: cooling water circulation pump 66: cooling fan

70, 100, 130: Stirling engine 80: Heat pump type air conditioner

82,101,131: refrigerant circulation passage 83: compressor

84: four-way valve 85: outdoor heat exchanger

86: outdoor expansion valve 87: indoor heat exchanger

88: indoor expansion valve 90: waste heat recovery means

92: exhaust gas heat exchanger 93: waste heat supply heat exchanger

94: heat medium circulation path 95: heat medium circulation pump

96: heat dissipation heat exchanger 97: heat dissipation fan

98: heat dissipation path 99,134: three-way

102,132: switching valve 110: cooling passage

112: first cooling reverse side 114: second cooling reverse side

116: cooling valve 120: heating flow path

122: reverse heating side for first heating 124: reverse heating side for second heating

126: heating valve

The present invention relates to a cogeneration system, and more particularly, to a cogeneration system provided with additional compression means for compressing a refrigerant of a heat pump type air conditioner using waste heat from a driving source.

Cogeneration systems, commonly referred to as cogeneration systems, are systems that produce power and heat simultaneously from a single energy source.

1 is a schematic diagram of a cogeneration system according to the prior art.

In the cogeneration system according to the related art, as illustrated in FIG. 1, a generator 2 for generating electric power and a driving source such as an engine 10 for driving heat and generating heat, may be used. And a heat storage tank 30 that uses waste heat from the waste heat recovery means 20 to recover the waste heat generated by the engine 10.

The electric power produced by the generator 2 is supplied to home appliances such as various lighting fixtures and heat pump type air conditioners 4 in the home.

The generator 2 and the engine 10 are installed in the engine room E of a chassis (not shown) separately from the heat demand.

The heat pump type air conditioner 4 includes a compressor 5, a four-way valve 6, an indoor heat exchanger 7, an expansion mechanism 8, and an outdoor heat exchanger 9.

The heat pump air conditioner (4) is a refrigerant compressed by the compressor (5) during the cooling operation the four-way valve (6), outdoor heat exchanger (9), expansion mechanism (8) and indoor heat exchanger (7) As the outdoor heat exchanger (9) acts as a condenser, the indoor heat exchanger (7) acts as an evaporator as it circulates through the compressor (4) via the four-way valve (6) in order to deprive heat of indoor air. .

On the other hand, during the heating operation, the refrigerant compressed by the compressor (5) causes the four-way valve (6), the indoor heat exchanger (7), the expansion mechanism (8), the outdoor heat exchanger (9), and the four-way valve (6). As it is circulated in turn to the compressor 5 via the compressor, the outdoor heat exchanger 9 acts as an evaporator, and the indoor heat exchanger 7 acts as a condenser to heat indoor air.

The waste heat recovery means 20 is an exhaust gas heat exchanger 22 which deprives heat of exhaust gas discharged from the engine 10 and a cooling water heat exchanger 24 which deprives heat of cooling water cooling the engine 10. It consists of.

The exhaust gas heat exchanger 22 is connected to the heat demand 30 such as the heat storage tank and the first heat supply line 23, and the waste heat taken from the exhaust gas of the engine 10 is the first heat supply line 23. Through the heat storage tank is delivered to the heat demand (30).

The cooling water heat exchanger 24 is connected to the heat demand 30 such as the heat storage tank 30 and the second heat supply line 25, and the heat taken from the cooling water cooling the engine 10 is supplied to the second heat supply. The line 25 is transferred to the heat demand 30 such as the heat storage tank 30.

A hot water tank is connected to the heat storage tank 30.

However, the cogeneration system according to the prior art has a problem that the waste heat of the engine 10 is used only in a hot water tank, etc., so that its efficiency may not be maximized.

The present invention has been made to solve the above problems of the prior art, the waste heat of the drive source is transferred to the refrigerant of the heat pump type air conditioner by the waste heat supply heat exchanger to improve the heating performance and heat using the waste heat of the drive source An object of the present invention is to provide a cogeneration system in which efficiency is maximized by compressing a refrigerant of a pump type air conditioner.

The cogeneration system according to the present invention for solving the above problems is a generator, a drive source for driving the generator and generating heat, a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, an outdoor expansion valve, and an indoor expansion valve. A heat pump type air conditioner comprising a; and additional compression means for compressing the refrigerant of the heat pump type air conditioner by using the waste heat generated from the drive source.

The additional compression means is installed in an exhaust pipe through which exhaust gas exhausted from the driving source is discharged, and is connected to a refrigerant circulation passage through which the refrigerant of the heat pump type air conditioner circulates.

The cogeneration system further comprises waste heat recovery means for recovering waste heat of the driving source and a waste heat supply heat exchanger for supplying the heat recovered from the waste heat recovery means to the heat pump type air conditioner.

The refrigerant circulation passage allows the refrigerant discharged from the compressor to flow into the suction side of the additional compression means during the cooling operation of the heat pump type air conditioner, and the refrigerant passing through the waste heat supply heat exchanger during the heating operation is the additional compression means. Characterized in that the switching valve for switching the flow of the refrigerant to be introduced into the suction side of the.

The cogeneration system further includes waste heat recovery means for recovering waste heat of the driving source, and a waste heat supply heat exchanger for supplying the heat recovered from the waste heat recovery means to the heat pump type air conditioner. It is installed in the heat medium circulation passage connecting the waste heat recovery means and the waste heat supply heat exchanger, characterized in that connected to the refrigerant circulation passage circulating the refrigerant of the heat pump type air conditioner.

The refrigerant circulation passage allows the refrigerant discharged from the compressor to flow into the suction side of the additional compression means during the cooling operation of the heat pump type air conditioner, and the refrigerant passing through the waste heat supply heat exchanger during the heating operation is the additional compression means. Characterized in that the switching valve for switching the flow of the refrigerant to be introduced into the suction side of the.

The heat dissipation means is installed on the outlet side of the additional compression means to prevent the refrigerant compressed by the additional compression means from being overheated.

The additional compression means is a stirling engine or a turbine engine for generating power by receiving heat.

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

2 is a schematic diagram of a heat pump type air conditioner of a cogeneration system according to a first embodiment of the present invention in a cooling operation, and FIG. 3 is a heat pump type air of a cogeneration system according to a first embodiment of the present invention. Schematic diagram when the conditioner is heating operation.

In the cogeneration system according to the first embodiment of the present invention, as shown in FIGS. 2 to 3, a generator 50, a drive source for driving heat and generating heat, and a compressor 83. And a heat pump type air conditioner (80) including a four-way valve (84), an outdoor heat exchanger (85), an indoor heat exchanger (87), an outdoor expansion valve (86), and an indoor expansion valve (88), It comprises a further compression means for compressing the refrigerant of the heat pump type air conditioner 80 by using the heat generated from the drive source.

The generator 50 is any one of an alternator and a direct current generator, the rotor is connected to the output shaft of the drive source to produce power when the output shaft rotates, the generated power is the heat pump type air conditioner (80), etc. To supply.

The driving source may be made of a fuel cell or an engine driven using fossil fuel such as gas or petroleum, but the following description is limited to the engine 52.

The engine 52 is provided with a fuel injection port 54 into which fuel such as gas or petroleum is injected, and an exhaust pipe 56 through which exhaust gas exhausted from the engine passes.

The additional compression means may be a stirling engine or a turbine engine for generating power by receiving heat, but the following description is limited to the stirling engine 70.

The Stirling engine 70 is installed in the exhaust pipe 56 and is connected to the refrigerant circulation passage 82 through which the refrigerant of the heat pump type air conditioner 80 circulates.

The cogeneration system further includes a cooling water heat exchanger (60) which takes heat of cooling water for cooling the engine (52).

The cooling water heat exchanger 60 is connected to the engine 52 and the cooling water line 62, and a cooling fan 66 is installed at one side of the cooling water heat exchanger 60 to radiate heat taken out of the cooling water to the outside. .

The heat pump air conditioner (80) includes an outdoor unit (O) including an compressor (83), a four-way valve (84), an outdoor heat exchanger (85), and an outdoor expansion valve (86), and an indoor heat exchanger (87). And an indoor unit (I) comprising an indoor expansion valve (88).

The outdoor unit (O) and the indoor unit (I) is composed of a single number or a plurality, and the following description will be limited to a single outdoor unit (O) and a plurality of indoor units (I).

The operation of the cogeneration system according to the first embodiment of the present invention configured as described above is as follows.

When the engine 52 is driven, the generator 50 rotates the rotor to produce power, and the generated power is shown in FIGS. 2 to 3, through the power line, the heat pump air conditioner ( 80).

The coolant waste heat of the engine 52 is transferred to the coolant heat exchanger 60 and radiated to the outside by the cooling fan 66.

The waste gas waste heat of the engine 52 is transmitted to the Stirling engine 70 while passing through the exhaust pipe 56, and the exhaust gas deprived of heat from the Stirling engine 70 is transferred to the outside through the exhaust pipe 56. Is released.

The Stirling engine 70 receives waste gas waste heat from the exhaust pipe 56 to generate power, and the generated power is used to compress the refrigerant.

During the cooling operation of the heat pump type air conditioner 80, the refrigerant compressed in the Stirling engine 70 flows into the compressor 83 and is compressed again.

That is, the refrigerant is first compressed in the Stirling engine 70 and secondly compressed in the compressor 83.

Therefore, the refrigerant is multi-stage compressed by the Stirling engine 70 and the compressor 83 to reduce the work of the compressor 83, thereby reducing the power consumption of the compressor (83).

Thereafter, the refrigerant compressed by the compressor 83 passes through the outdoor heat exchanger 85, the outdoor expansion valve 86, the indoor expansion valve 88, and the indoor heat exchanger 87, and then the stirling engine 70. Inflow).

The refrigerant introduced into the Stirling engine 70 repeats the above process, wherein the outdoor heat exchanger 85 functions as a condenser, the indoor heat exchanger 87 functions as an evaporator, and the indoor unit I ) Cool the room.

On the other hand, even during the heating operation of the heat pump type air conditioner 80, the refrigerant first compressed in the Stirling engine 70 flows into the compressor 83 and is second compressed.

And, as shown in Figure 3, the four-way valve 84 is switched to the heating mode, the refrigerant compressed by the compressor 83 is the indoor heat exchanger 87 and the indoor expansion valve 88 and the outdoor expansion After passing through the valve 86 and the outdoor heat exchanger 85, the stirling engine 70 flows into the stirling engine 70. At this time, the outdoor heat exchanger 85 functions as an evaporator, and the indoor heat exchanger 87 functions as a condenser. The indoor unit (I) heats the room.

4 and 5 are schematic diagrams of a cogeneration system according to a second embodiment of the present invention.

In the cogeneration system according to the second embodiment of the present invention, as shown in FIGS. 4 and 5, waste heat recovery means 90 for recovering waste heat of the engine 52 and recovery from the waste heat recovery means 90. Waste heat supply heat exchanger (93) for supplying the heat to the heat pump type air conditioner (80), heat dissipation means for dissipating heat recovered from the waste heat recovery means, and waste heat generated from the engine (52) And an additional compression means for compressing the refrigerant of the heat pump type air conditioner 80 using the waste heat recovery means, the waste heat supply heat exchanger, heat dissipation means, and other compression means. Since is the same as the first embodiment of the present invention, the same reference numerals are used, and a detailed description thereof may be omitted.

The additional compression means may be a stirling engine or a turbine engine for generating power by receiving heat, but the following description will be limited to the stirling engine 100.

The Stirling engine 100 is installed in an exhaust pipe 56 through which exhaust gas exhausted from the engine 52 is discharged, and the waste heat supply heat exchanger 93, the heat pump type air conditioner 80, and a refrigerant circulation are provided. It is connected to the flow path 101.

In the refrigerant circulation passage 91, the refrigerant discharged from the compressor 83 flows into the suction side of the Stirling engine 100 during the cooling operation of the heat pump type air conditioner 80, and the waste heat during the heating operation. A switching valve 102 for switching the flow of the refrigerant is installed so that the refrigerant passing through the supply heat exchanger 93 flows into the suction side of the Stirling engine 100.

The switching valve 102 is preferably a four-way valve.

The waste heat recovery means 90 is on the exhaust pipe 56 to recover the heat of the exhaust gas discharged from the engine 52 and the cooling water heat exchanger 91 connected to the engine 52 and the cooling water line 62. The exhaust gas heat exchanger 92 provided is comprised.

The cooling water heat exchanger 91, the exhaust gas heat exchanger 92, and the waste heat supply heat exchanger 93 are connected to a heat medium circulation passage 94 formed to circulate the heat medium, and pump the heat medium on the heat medium circulation path 94. Heating medium circulation pump 95 is installed.

On the other hand, the cogeneration system is provided with a heat dissipation means to heat dissipate the heat recovered by the waste heat recovery means 90 to the outside.

The heat dissipation means includes a heat dissipation heat exchanger 96 and three-way sides 99.

The heat dissipation heat exchanger 96 is connected to the heat medium circulation passage 94 as a heat dissipation passage 98 so that the heat medium passing through the heat medium circulation passage 94 can bypass the waste heat supply heat exchanger 98. .

The three-way side 99 is installed at the portion where the heat medium circulation passage 94 and the heat dissipation passage 98 are connected to each other so that the heat medium can be distributed.

The heat transferred to the heat dissipation heat exchanger 96 is used in a hot water tank (not shown) or a heat storage tank (not shown), or is discharged into the atmosphere by the heat dissipation fan 97.

Meanwhile, a cooling passage 110 is formed in the refrigerant circulation passage 101 so that the refrigerant bypasses the waste heat supply heat exchanger 93 during the cooling operation of the heat pump type air conditioner 80. The heating flow path 120 is formed such that a refrigerant bypasses the outdoor heat exchanger 85.

The cooling passage 110 is provided with a first cooling reverse valve 112 so that refrigerant does not flow back into the cooling passage 110 during the heating operation of the heat pump type air conditioner 80, and the heating passage ( The first heating reverse valve 122 is installed in the 120 to prevent the refrigerant from flowing back into the heating channel 120 during the cooling operation of the heat pump type air conditioner 80.

In the refrigerant circulation passage 101 for heating at the inlet side of the waste heat supply heat exchanger 93 so that the refrigerant does not flow into the waste heat supply heat exchanger 93 during the cooling operation of the heat pump type air conditioner 80. The valve 126 is provided, and the second heating check valve 124 is provided on the outlet side.

In addition, the refrigerant circulation passage 101 has a cooling valve 116 and a second cooling reverse check valve so that refrigerant is not introduced into the outdoor heat exchanger 85 during the heating operation of the heat pump type air conditioner 80. 114 is installed.

The operation of the cogeneration system according to the second embodiment of the present invention configured as described above is as follows.

When the engine 52 is driven, the waste gas waste heat of the engine 52 is transferred to the Stirling engine 100, and the remaining waste heat of the exhaust gas deprived of the waste heat from the Stirling engine 100 is the exhaust gas heat exchanger. And the coolant waste heat is transferred to the coolant heat exchanger (91).

The Stirling engine 100 receives exhaust gas waste heat to generate power, and the generated power is used to compress the refrigerant.

Heat recovered from the cooling water heat exchanger (91) and the exhaust gas heat exchanger (92) is transferred to the heat medium, and the heat medium is distributed by the three-way (99) to dispose of the waste heat supply heat exchanger (93) and the heat dissipation heat exchanger ( 96).

In the cooling operation of the heat pump type air conditioner 80, as shown in FIG. 4, the changeover valve 102 has a refrigerant discharged from the compressor 83 flowing into the suction side of the Stirling engine 100. To switch the euro to be.

Therefore, the refrigerant of the heat pump type air conditioner is first compressed by the compressor 83, flows into the suction side of the Stirling engine 100 via the switching valve 102, and is caused by the Stirling engine 100. Second compression

That is, the refrigerant is multistage compressed in the compressor 83 and the Stirling engine 100.

Therefore, the work to be done by the compressor 83 is reduced, and the power consumption of the compressor 83 is reduced.

Thereafter, the refrigerant compressed by the Stirling engine 100 passes through the switching valve 102 and the cooling passage 110 and flows into the outdoor heat exchanger 85 to condense.

The refrigerant condensed in the outdoor heat exchanger (85) is expanded while passing through the indoor expansion valve (88), evaporated in the indoor heat exchanger (87), and circulated to the compressor (83).

On the other hand, during the heating operation of the heat pump type air conditioner 80, as shown in Figure 5, the switching valve 102 is the refrigerant passing through the waste heat supply heat exchanger 93 is the Stirling engine The flow path is switched so as to flow into the suction side of the 102.

Therefore, the refrigerant, which has received heat from the waste heat supply heat exchanger 93, flows into the suction side of the Stirling engine 100 after passing through the switching valve 102 and is first compressed by the Stirling engine 100.

The first compressed refrigerant in the Stirling engine 100 flows into the compressor 83 and is second compressed.

The refrigerant passing through the compressor 83 is introduced into the heating passage 120 to bypass the outdoor heat exchanger 85 after passing through the indoor heat exchanger 87 and the indoor expansion valve 88.

The refrigerant introduced into the heating passage 120 is expanded by the outdoor expansion valve 86 and then evaporated in the waste heat supply heat exchanger 93 and introduced into the stirling engine 100.

6 and 7 are schematic views of a cogeneration system according to a third embodiment of the present invention.

In the cogeneration system according to the third embodiment of the present invention, as shown in FIGS. 6 and 7, the Stirling engine 130 is installed on the heat medium circulation passage 94 to receive heat from the heat medium, and the waste heat. Except for being connected to the supply heat exchanger 93, the heat pump type air conditioner 80 and the refrigerant circulation passage 131, the other construction and operation are the same as the second embodiment of the present invention, so the same reference numerals are used. The detailed description thereof will be omitted.

The refrigerant circulation passage 131 allows the refrigerant discharged from the compressor 83 to flow into the suction side of the Stirling engine 130 during the cooling operation of the heat pump type air conditioner 80, and the waste heat during the heating operation. A switching valve 132 is installed to switch the flow of the refrigerant so that the refrigerant passing through the supply heat exchanger 93 flows into the suction side of the Stirling engine 130.

And, the three-way 134 is the heat recovered from the cooling water heat exchanger 91 and the exhaust gas heat exchanger 92 is transferred to the Stirling engine 130, waste heat supply heat exchanger 93 and the heat radiation heat exchanger (96). Distribute the heat medium to distribute.

The operation of the cogeneration system according to the third embodiment of the present invention configured as described above is as follows.

During the cooling operation of the heat pump type air conditioner 80, the heat medium circulation pump 95 is driven, and the three-way valve 134 radiates all of the heat medium except for the heat medium to be transmitted to the Stirling engine 130. To the flow path 98.

Accordingly, the heat medium of the heat medium circulation passage 94 is pumped by the heat medium circulation pump 95 to circulate the coolant heat exchanger 91 and the exhaust gas heat exchanger 92, and then the three-way valve 134. Passed through the heat dissipation flow path 98 and the heat medium circulation flow path (94).

The heat medium flowing through the three-way 134 to the heat medium circulation passage 94 transfers heat to the Stirling engine 130 and then passes through the waste heat supply heat exchanger 98 to the heat medium circulation pump 95. Inflow.

The Stirling engine 130 receives power from the heat medium to generate power to compress the refrigerant.

In addition, the switching valve 132 switches the flow path so that the refrigerant discharged from the compressor 83 flows into the suction side of the Stirling engine 130.

Accordingly, the refrigerant compressed by the compressor 83 is introduced into the suction side of the Stirling engine 132 through the switching valve 132 and is secondarily compressed by the Stirling engine 132.

The second compressed refrigerant in the Stirling engine 132 passes through the cooling passage 110 and then condenses in the outdoor heat exchanger 85, and passes through the indoor expansion valve 88 and the indoor heat exchanger 87. And then circulated to the compressor 83.

On the other hand, during the heating operation of the heat pump type air conditioner 80, the three-way 134 opens the heat medium circulation passage 94 so that the heat medium flows into the heat medium circulation passage 94 and the heat dissipation passage. Block 98.

The heat medium flowing through the three-way valve 134 and flowing into the heat medium circulation passage 94 transfers heat to the Stirling engine 130 and then passes through the waste heat supply heat exchanger 93 while the heat pump type air conditioner. Heat is transferred to the refrigerant of 80, and the transferred heat is used for heating operation of the heat pump type air conditioner 80.

In addition, the switching valve 132 switches the flow path so that the refrigerant passing through the waste heat supply heat exchanger 93 may flow into the suction side of the Stirling engine 130.

Therefore, the refrigerant received from the waste heat supply heat exchanger 93 passes through the switching valve 132 to the suction side of the Stirling engine 130 and is first compressed by the Stirling engine 130.

The first compressed refrigerant in the Stirling engine 130 flows into the compressor 83 and is second compressed.

The refrigerant compressed by the compressor 83 passes through the indoor heat exchanger 87 and the indoor window valve 88, and then flows into the heating channel 120 to bypass the outdoor heat exchanger 85. .

The refrigerant introduced into the heating passage 120 is expanded by the outdoor expansion valve 86 and then evaporated in the waste heat supply heat exchanger 93 and introduced into the stirling engine 130.

The cogeneration system according to the present invention configured as described above is provided with a Stirling engine for compressing the refrigerant of the heat pump type air conditioner using waste gas waste heat recovered from the engine, the refrigerant is multi-stage compression by the compressor and the Stirling engine As a result, the work of the compressor is reduced, thereby reducing the power consumption of the compressor.

In addition, the waste heat supply heat exchanger is installed to supply the waste heat of the engine to the heat pump type air conditioner, thereby improving the heating capacity and reducing the power consumption.

In addition, when the heat pump type air conditioner is a heating operation, since the refrigerant is evaporated by the waste heat supply heat exchanger which is heated by the waste heat, it can have a constant heating capacity regardless of the outdoor temperature, and minimize the frost frost of the outdoor heat exchanger. It can be effective.

In addition, the Stirling engine is installed in the heat medium circulation passage to receive heat from the heat medium, thereby utilizing not only the waste gas waste heat but also the coolant waste heat, thereby increasing the utilization efficiency of the waste heat.

Claims (8)

A generator; A driving source for driving the generator and generating heat; A heat pump type air conditioner including a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, an outdoor expansion valve, and an indoor expansion valve; A cogeneration system comprising additional compression means for compressing a refrigerant of the heat pump type air conditioner by using the waste heat generated by the driving source. The method according to claim 1, The additional compression means is installed in an exhaust pipe through which the exhaust gas exhausted from the driving source is discharged, and the cogeneration system, characterized in that connected to the refrigerant circulation passage through which the refrigerant of the heat pump type air conditioner circulates. The method according to claim 2 The cogeneration system includes waste heat recovery means for recovering waste heat of the driving source; Cogeneration system characterized in that it further comprises a waste heat supply heat exchanger for supplying the heat recovered from the waste heat recovery means to the heat pump type air conditioner. The method according to claim 3 The refrigerant circulation passage allows the refrigerant discharged from the compressor to flow into the suction side of the additional compression means during the cooling operation of the heat pump type air conditioner, and the refrigerant passing through the waste heat supply heat exchanger during the heating operation is the additional compression means. Cogeneration system, characterized in that the switching valve is installed to switch the flow of refrigerant to be introduced to the suction side of the The method according to claim 1, The cogeneration system further includes waste heat recovery means for recovering waste heat of the driving source, and a waste heat supply heat exchanger for supplying the heat recovered from the waste heat recovery means to the heat pump type air conditioner. The additional compression means is installed in the heat medium circulation passage connecting the waste heat recovery means and the waste heat supply heat exchanger, the cogeneration system characterized in that connected to the refrigerant circulation passage circulating the refrigerant of the heat pump type air conditioner The method according to claim 5 The refrigerant circulation passage allows the refrigerant discharged from the compressor to flow into the suction side of the additional compression means during the cooling operation of the heat pump type air conditioner, and the refrigerant passing through the waste heat supply heat exchanger during the heating operation is the additional compression means. Cogeneration system, characterized in that the switching valve is installed to switch the flow of refrigerant to be introduced to the suction side of the The method according to claim 4 or 6, Cogeneration system, characterized in that the heat dissipation means is installed on the outlet side of the additional compression means to prevent the refrigerant compressed by the additional compression means is overheated. The method according to claim 4 or 6, The additional compression means is a cogeneration system, characterized in that the cogeneration system turbine or turbine engine for generating power by receiving heat

Images