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Solutions for a Sustainable Future

Cogeneration

Cogeneration is the process of converting waste thermal heat from the engine exhaust and coolant circuits to either additional electrical power, or steam for industrial heating applications – with no additional fuel input.

Cogeneration, also known as Combined Heat and Power (CHP), is one of the most efficient methods of power generation.  Moreover, with rising fuel prices, waste heat recovery systems are even more attractive today and the payback on the capital investment is usually within a year.

Cummins pioneered waste heat recovery systems in Nigeria.

Trigeneration

Tri-generation, also known as Combined Cooling Heat and Power (CCHP), utilises waste heat from the engine to generate steam or additional electricity, as well as integrating absorption chillers into the circuit.  These chillers use thermal energy streams generated by the heat recovery system to produce chilled water, which is then used in industrial cooling or refrigeration.

Trigeneration technology is particularly effective for industries that have both a steam and cooling requirement.

Benefits of Waste Heat Recovery:

  1. Cost Savings

Cogeneration can deliver up to 35% energy savings.

  1. Fuel Efficiency

Cogeneration systems can extract nearly three times the usable energy from a given amount of fuel compared to centralized coal-burning power plants, which only convert about 27% of fuel energy into usable electricity.

Cogeneration systems burning natural gas in a reciprocating engine with associated heat-recovery equipment on the other hand approach 90% overall efficiency, generating significant economic benefits.

  1. Reduced CO2 and NOx

When fuel is consumed in an on-site cogeneration plant, it produces almost 80% less carbon dioxide (CO2) per unit of energy compared to a centralized coal-fired power plant.  This reduction is compounded by the fact that Cummins lean-burn gas fuelled generator sets emit very low levels of oxides of nitrogen (NOx) and near-zero Particulate Matter (PM).  Cummins cogeneration solutions enhance sustainability and comply with worldwide emissions standards.

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