Combined Heat and Power Focus

DECC's Free resource supporting the development of CHP

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Recovery and Use of Heat

The heat liberated from a CHP unit will consist, in the first instance, of:

  • Hot exhaust gases.
  • Hot water from the CHP cooling system.

This heat can be recovered through appropriate heat exchangers as:

  • Low temperature hot water (LTHW) at <100ºC.
  • High temperature hot water (HTHW) at 150-200ºC (from exhaust heat only in   the case of an engine).
  • Steam (from exhaust heat only in the case of an engine).
  • Warm air.

The precise configuration will be determined by the end application. For certain processes, direct use of hot exhaust gas is appropriate.

 

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