eta Energieberatung - Energieerzeugung mit Konzept Rotkreuzkrankenhaus

Combined heat and power

What is combined heat and power (CHP) generation?

CHP is the simultaneous generation of electric power and heat in a single plant. A special case is trigeneration, i.e. the combined generation of heat, power, and cooling energy.

The advantage of combined heat and power generation is the particularly efficient use of fuel. Compared with separate heat and power generation, the efficiency factor is significantly higher.

Would combined heat and power generation be of interest for me?

CHP plants are most efficient, if the generated heat as well as the electric power is used directly on-site.  The revenue of a CHP plant can be determined from the amount of heat used, the reduction of purchased electricity, and possible subsidies according to the Renewable Energy Law as well as possible funding, e.g. for heat storage, heating & cooling networks, etc.

Apart from fossil fuels, CHP plants can also be fired with alternative fuels such as bioethanol, wood chips or pellets.

Typical industrial CHP applications are:

  • Combustion systems with steam turbines (back pressure systems, extraction and bleed condensing systems)
  • Combustion systems with steam engines
  • (Micro) gas turbine plants (with waste heat boiler or with waste heat boiler and steam turbine system)
  • Combustion engine plants (CHP)
  • Stirling engines
  • Organic Rankine cycle (ORC) plants as well as
  • fuel cell plants

What can we do for you?

Within the scope of an initial feasibility study, the following steps should be planned and worked out conceptually:

  • Load profile analysis of heat and power demand
  • Determination of basics and general technical conditions
  • Assessment of technical feasibility
  • Procurement of target price offers for the main plant components
  • Drafts of different plant concepts, taking local conditions into account (rough dimensioning of equipment)
  • Estimated efficiency of the plant concept, taking the individual energy costs and duties into account, e.g. energy tax as well as revenue from funding programs
  • Sensitivity analysis regarding the influence of changing energy prices