Cogeneration system

Abstract

A cogeneration system according to the present invention includes a waste heat supply heat exchanger that supplies waste heat, which is recovered from an engine, to a suction unit side of a compressor. Accordingly, the present invention is advantageous in that it can maximize the use efficiency of the waste heat. Furthermore, a low compression inverter type compressor having a compression ratio of 1.5 to 2.5, which is lower than that of the related art, is used. Therefore, the present invention is advantageous in that it can maximize the efficiency of the system since the waste heat supplied from the waste heat supply heat exchanger can be utilized to a greater extent. The present invention is also advantageous in that it can prevent damage to the compressor and can save consumption power since a difference in pressure between the suction and discharge units of the compressor becomes small.

Description

BACKGROUND [0001] 1. Field of the Invention [0002] The present invention relates to a cogeneration system. More particularly, the present invention relates to a cogeneration system including a waste heat supply heat exchanger for supplying waste heat recovered from an engine to a suction unit of a compressor, wherein the compressor is a low compression inverter type compressor with a compression ratio of 1.5 to 2.5 whereby the waste heat supplied from the waste heat supply heat exchanger can be utilized to a greater extent and the system efficiency can be maximized accordingly. [0003] 2. Discussion of Related Art [0004] In general, a combined heat power plant is also called a cogeneration system and is a system that produces electric power and heat at the same time using one energy source. [0005]FIG. 1 is a view schematically showing the construction of a cogeneration system in the related art. [0006] The related art cogeneration system includes a generator 2 that generates electric...

AI Technical Summary

Benefits of technology

[0016] The present invention has been developed in an effort to provide a cogeneration system in which waste heat recovered from a driving source is supplied to a compressor suction unit side of an air conditioner and a compressor with the lowest compression ratio is used, thus improving the efficiency of the system.

[0022] The outdoor expansion valve for expanding the refrigerants introduced from an indoor unit side is disposed on the suction unit side of the bypass flow path. A third check valve for preventing the refrigerants, which are sucked into the outdoor heat exchanger, from flowing backward into the bypass flow path during the air cooling operation is disposed on the discharge unit side of the bypass flow path.

[0027] The cogeneration system according to the present invention includes a waste heat supply heat exchanger that supplies waste heat, which is recovered from the engine, to a suction unit side of a compressor. Accordingly, the present invention is advantageous in that it can maximize the use efficiency of waste heat.

[0028] Furthermore, the cogeneration system includes a low compression inverter type compressor having a compression ratio of 1.5 to 2.5, which is lower than that of the related art. Therefore, the present invention is advantageous in that it can maximize the efficiency of the cogeneration system since waste heat supplied from a waste heat supply heat exchanger can be utilized to a greater extent. The present invention is also advantageous in that it can prevent damage to the compressor and can save consumption power since a difference in pressure between suction and discharge units of the compressor becomes small.

Problems solved by technology

Therefore, a problem arises because the system efficiency cannot be maximized.

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