Global Clean Energy & Solution Provider

  • Energy
  • Service
  • Company
City Gas

District Energy

What is District Energy

The District Energy Business is an environment-friendly,
high-efficiency business that involves producing and selling both heat and
electricity from concentrated energy production facilities
(co-generation plants, incinerators, etc.).

Business Concept
Business Classification
Business Classification
District Cooling and Heating Supply of electricity or heat for heating, hot water, or cooling purposes to houses, shopping complexes, and other buildings in a certain area
Industrial Complexes Supply of industrial electricity or heat to companies in industrial complexes
Concept Map

District Energy facilities use fuels such as LNG and bituminous coal to generate heat and electricity. The heat produced is directly supplied to apartments, buildings, etc. for heating purposes or industrial purposes for businesses.
The electricity produced is sold to Korea Power Exchange. Because the District Energy business produces both heat and energy, it has the characteristics of both the city gas distribution business and the power generation business. 1.Natural gas bituminous coal, 2.Energy production facility. CHP(Combine Heat and Power)  steam boiler, hot-water boiler heat exchanger, heat storage tank, pump, incineration plant, Bio-mass., 3-1.Electricity(wholesale), 4.Korea Power Exchange, 3-2.Heat(retail), 4.Apartment/building, Factories. Electricity power / Power generation / District Energy / Domestic heating / Industrial steam / City gas(Heating)

Concept of CHP-combined Heat & Power

In a CHP-combined Heat & Power System, electricity is first produced through gas turbines after combustion of the fuel input. Then waste heat is recovered using the heat recovery steam generator (HRSG) and sent to the steam turbine, where it uses the recovered waste heat (steam) to create secondary electricity and heat. Similarly, while ordinary power generation systems only produce electricity, CHP-combined heat & power systems recover waste heat and reuse it to produce electricity and heat, therefore making it an environment-friendly and highly efficient system.

  • 1.GT(Gas Turbine): Generation through gas expansion, 2.HRSG(Heat Recovery Steam Generator): Production of steam through recovery of waste heat, 3. ST(Steam Turbine): Generation through steam expansion
  • Ordinary generation: Energy utilization efficiency, Fuel energy 100%, Electricity 53%, Loss 47%
  • Combined-cycle power plant (regional heating): Energy utilization efficiency, Fuel energy 100%, Electricity 46%, Lose 20%, Heat 34%.
  • 1.fuel, 2-1.Waste heat, 3.HRSG (Waste heat recovery steam generator), 4-1.Steam turbine, 4-2.Condenser, 5-1.Regional heating heat exchanger→Heat energy(Cooling and heating Hot water), Generator→Electric power(Power, Electric heat, Lighting)