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US 2006/0037338 A1Published application
Cogeneration system
AssigneeLG Electronics Inc.
InventorsCheol Kim, Cheol Ko, Sim Ha, Baik Cheong
Life of this patent
Estimating the term…
Abstract
A cogeneration system in which at least one of the heat of an engine-cooling heat exchanger and the heat of an exhaust gas heat exchanger is used in a heat consumer during a heating operation of the heat consumer, and the heat of the engine-cooling heat exchanger is transferred to a radiator to allow the transferred heat to be discharged from the radiator during a cooling operation of the heat consumer, so that it is possible to minimize the size of the radiator and the amount of air blown to the radiator, and to reduce costs and noise.
Claims21
A cogeneration system comprising:
- an engine;
- a generator connected to an output shaft of the engine to generate electricity;
- an engine-cooling heat exchanger to absorb heat from cooling water used to cool the engine;
- an exhaust gas heat exchanger to absorb heat from exhaust gas discharged from the engine;
- a heat consumer switchable to operate between a cooling mode and a heating mode;
- a radiator to discharge heat;
- and
- heat transfer means to transfer, to the heat consumer, at least one of the heat absorbed by the engine-cooling heat exchanger and the heat absorbed by the exhaust gas heat exchanger during an operation of the heat consumer in the heating mode, and thus, to allow the heat consumer to use the transferred heat, and to transfer, to the radiator, the heat absorbed by the engine-cooling heat exchanger during an operation of the heat consumer in the cooling mode, and thus, to cause the heat transferred to the radiator to be discharged from the radiator.
5 more elements
A cogeneration system comprising:
- an engine;
- a generator connected to an output shaft of the engine to generate electricity;
- an engine-cooling heat exchanger to absorb heat from cooling water used to cool the engine;
- an exhaust gas heat exchanger to absorb heat from exhaust gas discharged from the engine;
- a heat pump type air conditioner to use the electricity generated from the generator, the heat pump type air conditioner comprising a compressor, a directional valve, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger;
- a pre-heater to pre-heat air blown toward the outdoor heat exchanger;
- a radiator to discharge heat;
- and
- heat transfer means to transfer, to the pre-heater, at least one of the heat absorbed by the engine-cooling heat exchanger and the heat absorbed by the exhaust gas heat exchanger during a heating operation of the heat pump type air conditioner, and to transfer, to the radiator, the heat absorbed by the engine-cooling heat exchanger during a cooling operation of the heat pump type air conditioner, and thus, to cause the heat transferred to the radiator to be discharged from the radiator.
6 more elements
A cogeneration system comprising:
- an engine;
- a generator connected to an output shaft of the engine to generate electricity;
- an engine-cooling heat exchanger to absorb heat from cooling water used to cool the engine;
- an exhaust gas heat exchanger to absorb heat from exhaust gas discharged from the engine;
- a heat pump type air conditioner to use the electricity generated from the generator, the heat pump type air conditioner comprising a compressor, a directional valve, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger;
- a compressor discharge line heater to heat a refrigerant passing through a discharge line of the compressor;
- a radiator to discharge heat;
- and
- heat transfer means to transfer, to the compressor discharge line heater, at least one of the heat absorbed by the engine-cooling heat exchanger and the heat absorbed by the exhaust gas heat exchanger during a heating operation of the heat pump type air conditioner, and to transfer, to the radiator, the heat absorbed by the engine-cooling heat exchanger during a cooling operation of the heat pump type air conditioner, and thus, to cause the heat transferred to the radiator to be discharged from the radiator.
6 more elements
Dependencies are inferred from the claim text.