SYSTEM FOR UTILISATION HEAT OF CLOSED TYPE (VERSIONS) Russian patent published in 2017 - IPC F02C6/00 

FIELD: power industry.

SUBSTANCE: closed-type heat recovery system comprises first and second compressors, the output of the second compressor is connected to a heat exchanger in the exhaust path of the gas turbine plant through the recuperator. The consumer is additionally connected to the shaft, and the output of the turbine is connected to the second intercooler via a recuperator and a subsequently installed fuel heat exchanger. In the second version, the system also includes an air heater located between the recuperator and the fuel preheater. In the third version, the valve block is included in the system. The first output of the recuperator is connected to the first input of the valve block, and the first output of the valve block is connected to the input of the turbine. The turbine outlet is connected to the second intercooler via the second recuperator input and output and the subsequently installed fuel heat exchanger. The second input and output of the valve block are connected to a heat exchanger installed in the coolant source. The third output and the third input of the valve block are connected to the second heat exchanger installed in the flow of the second heat source. In the fourth version, the valve block and the air heater are included in the system. In the fifth version, the path of the system, according to option one, is filled with compressed carbon dioxide. According to the sixth version, compressed carbon dioxide and an air heater are used in the system path. In the seventh version, compressed carbon dioxide and a valve block connected to a heat exchanger installed in another heat source are used in the system path. In the eighth version, compressed carbon dioxide, an air heater and a valve block connected to a heat exchanger installed in another heat source are used in the system path.

EFFECT: invention allows to increase the full use of thermal energy of the coolant and to expand the possibilities of using the generated thermal and electric or mechanical energy.

8 cl, 4 dwg