Electricity generation with gas engines in co- and tri-generation: efficiency and sustainability

As we move towards the future of energy production, there is a growing emphasis on technologies that are not only efficient but also environmentally friendly. Co-generation and tri-generation systems powered by gas engines offer such a solution, with significant benefits for energy supply. This blog article explains how these systems work and the benefits they bring to the generation of electricity.

What is co- and tri-generation?

Co- and tri-generation, also known as combined heat and power (CHP) or combined cooling, heat and power (CCHP), are energy-efficient technologies that produce electrical and thermal energy from a single primary energy source. While cogeneration produces heat and electricity, the added benefit of tri-generation is cooling capacity.

How does gas engine co- and tri-generation work?

Gas co- and tri-generation systems are based on an internal combustion engine that burns natural gas, biogas or other types of gas. This process generates mechanical energy that is converted into electrical energy by a generator. The heat generated by the engine can be recovered through a heat exchanger in the form of hot water or steam, while in trigeneration systems the heat can be used for further cooling purposes.

Overview of the benefits

1. Energy efficiency: Co- and tri-generation systems are highly efficient, achieving efficiencies of up to 80-90%, as the energy in the primary energy source is almost fully utilised. This significantly reduces the energy losses that are typical in conventional power plants, where only about 35-40% of the energy produced is utilised.
2. Environmental benefits: Lower emissions compared to conventional power plants, especially CO2, NOx and SOx. Contributes to the fight against climate change through reduced greenhouse gas emissions.
3. Cost-effectiveness: Due to the high energy efficiency of the system, significant savings in operating costs can be achieved. In addition, local energy production reduces costs and losses associated with the transport and distribution of energy.
4. Savings and reliability: Co- and tri-generation makes buildings independent from the central electricity grid, increasing the security of energy supply. This can be particularly important for critical infrastructure such as hospitals or data centres.

Summary

Gas engine co- and tri-generation technologies allow us to keep pace with the environmental and economic challenges of the energy sector. These systems are not only efficient and economical, but also promote sustainable development, supporting a greener and cleaner future.