The differences between gas turbines and gas engines (2)

In terms of exhaust heat, the temperature and quantity of exhaust gas generated by gas turbines are usually higher, which is related to their working principle. In terms of nitrogen oxide emissions, gas turbines emit about 15 to 25 ppm at lower oxygen levels (O2=15%), compared to slightly higher emissions from gas engines genset at around 57 ppm.

In terms of machine size, gas turbines typically include small-sized machines suitable for applications with limited space. Gas engines, on the other hand, may include large-sized machines that are suitable for situations that require greater power output.

In terms of start-up time, gas turbines typically require a longer start-up time, around 20 minutes. The starting time of gas engines is relatively short, usually around 10 minutes. This makes gas engines more advantageous in applications that require rapid response.

In terms of maintenance intervals, both gas turbines and biogas engines genset have longer maintenance intervals, which helps to reduce maintenance costs and downtime.

It is worth noting that with the emergence of more large (over 3MWe) gas engine generator set products and the continuous improvement of performance, gas turbine suppliers are facing competitive pressure from gas engines. Especially in application scenarios such as peak shaving power plants that require flexible operating capabilities, gas engines are highly favored for their ability to quickly increase/decrease pressure. Nevertheless, gas turbines still have broad application prospects in large-scale peak shaving power plants.

Overall, both gas turbines and gas engines have significant value in power generation applications. Both technologies have been welcomed by users seeking reliable alternatives to electricity and thermal energy in the global market. For power users and producers in industrial and commercial facilities, now is the best time to explore the economic feasibility of using gas engines and gas turbine technology for combined heat and power generation.

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