Combined heat and power (CHP), also known as cogeneration, is the simultaneous production of electricity and heat from a single fuel source, such as: natural gas, biomass, biogas, coal, waste heat, or oil.

CHP is not a single technology, but an integrated energy system that can be modified depending upon the needs of the energy end user.

HP provides:

  1. Onsite generation of electrical and/or mechanical power.
  2. -heat recovery for heating, cooling, dehumidification, or process applications.
  3. Seamless system integration for a variety of technologies, thermal applications,and fuel types into existing building infrastructure.

The two most common CHP system configurations are:

Gas turbine or engine with heat recovery unit & Steam boiler with steam turbine

Gas Turbine or Engine With Heat Recovery Unit

This graphic shows a gas turbine- or internal combustion engine-based CHP system. Fuel is combusted to generate electricity for onsite use or to be exported to the power grid.

Simultaneously, heat is recovered using a heat recovery steam generator (HRSG) that produces steam or hot water for process applications or space heating.

Gas turbine or reciprocating engine CHP systems generate electricity by burning fuel (natural gas or biogas) to generate electricity and then use a heat recovery unit to capture heat from the combustion system's exhaust stream. This heat is converted into useful thermal energy, usually in the form of steam or hot water. Gas turbines/engines are ideally suited for large industrial or commercial CHP applications requiring ample amounts of electricity and heat.

Steam Boiler With Steam Turbine

This graphic shows a steam boiler- or steam turbine-based CHP system. Fuel is first combusted to heat water in a boiler to produce high-pressure steam, which is then sent to a steam turbine to power a generator, producing electricity. The electricity may be used onsite or exported to the grid and the waste steam can be used for process applications.

Steam turbines normally generate electricity as a byproduct of heat (steam) generation, unlike gas turbine and reciprocating engine CHP systems, where heat is a by product of power generation. Steam turbine-based CHP systems are typically used in industrial processes, where solid fuels (biomass or coal) or waste products are readily available to fuel the boiler unit.

UK Green deal Installers are here to guide and advise you on the best solutions for MICROGENERATION products for your home.

Call free on 0800 1123 474 for a no obligation chat.