Combined cooling, heating and power system

A combined cooling, heating and power system based on solid oxide fuel cell (SOFC) and gas turbine (GT) and CO2 (SOFC/GT/CO2) and organic Rankine cycle (ORC) combined cycle power generation and liquefied natural gas (LNG) cold energy utilization, comprising:

• an SOFC/GT hybrid power generation subsystem, a CO2 cycle subsystem, an ORC cycle subsystem, an LNG cold energy utilization subsystem, a heating subsystem, and a CO2 capture and air conditioning cooling subsystem, wherein the CO2 cycle subsystem comprises a supercritical CO2 (SCO2) cycle and a transcritical CO2 (TCO2) cycle;
• the SCO2 cycle comprises a waste heat boiler, a first electric generator, an SCO2 turbine, a gas cooler, and an SCO2 compressor;
• the waste heat boiler is configured to receive an exhaust from a first preheater of the SOFC/GT hybrid power generation subsystem to heat a first working fluid CO2 in the SCO2 cycle and produce a flue gas;
• in the SCO2 cycle, the SCO2 turbine is configured to receive the first working fluid CO2 in the SCO2 cycle that has been heated by the waste heat boiler and do work to drive the first electric generator to generate electricity;
• the gas cooler is configured to receive the first working fluid CO2 from the SCO2 turbine to heat a second working fluid CO2 in the TCO2 cycle;
• the SCO2 compressor is configured to receive the first working fluid CO2 from the gas cooler in the SCO2 cycle for compression;
• the waste heat boiler is configured to receive the first working fluid CO2 discharged from the SCO2 compressor for reheating so that one supercritical CO2 cycle is completed;
• the CO2 capture and air conditioning cooling subsystem comprises an evaporator, a first separator, a first air conditioning cooler, a first heat exchanger, a second separator, a dry ice container, a first condenser, a second heat exchanger, a second air conditioning cooler, and a first ice container;
• the evaporator is configured to receive the flue gas from the waste heat boiler;
• the first separator is configured to:
• receive the flue gas discharged from a flue gas side of the evaporator, and
• separate a first flow of water from the flue gas;
• the first air conditioning cooler is configured to receive the first flow of water to provide cooling for users;
• the first heat exchanger is configured to:
• receive the flue gas from the first separator, cool the flue gas by a working fluid R1150, and condense a CO2 gas in the flue gas into dry ice;
• the second separator is configured to:
• receive the flue gas discharged from the first heat exchanger, and
• separate the flue gas from the dry ice;
• the dry ice container is configured to store the dry ice;
• and
• the first condenser is configured to receive the flue gas discharged from the second separator to condense the second working fluid CO2 in the TCO2 cycle.