Converting a diesel genset (generator set) to operate on dual fuel, typical diesel and natural gas, is a viable option for many users looking to improve fuel efficiency and reduce emissions. Dual fuel conversion involves modifying the generators engine and fuel system to accommodate the use of both diesel and natural gas. Here are the key steps and considerations for a diesel genset dual fuel conversion:
Assessment: Start by assessing the feasibility of the conversion. Not all diesel gensets are suitable for dual fuel conversion, and it may not be cost-effective for older or smaller generators.
Regulatory Compliance: Check local and national regulations regarding dual fuel conversions, emissions standards, and safety requirements. Ensure that your converted genset will comply with these regulations.
Selection of Natural Gas System: Decide on the type of natural gas system to be used. There are two main options:
Dedicated Natural Gas System: This involves retrofitting the genset with a natural gas carburetion or fuel injection system. It requires a natural gas supply line to the genset. Bi-fuel System: In a bi-fuel system, the genset can run on both diesel and natural gas simultaneously. This option offers more flexibility but can be more complex to implement.
Fuel Storage: If you are using a dedicated natural gas system, you will need to provide a reliable source of natural gas. This may involve installing a natural gas pipeline or using compressed natural gas (CNG) storage tanks.
Engine Modifications: Modify the gensets engine to accept natural gas as a fuel source. This typically involves changes to the fuel injection system, ignition system, and sometimes the compression ratio.
Control System Integration: Ensure that the gensets control system can accommodate dual fuel operation. This may require reprogramming or replacing the control unit.
Safety Systems: Install safety systems and sensors to monitor gas leaks, pressure, and temperature. Safety is a critical aspect of dual fuel conversions.
Testing and Tuning: After the conversion, thoroughly test the genset to ensure that it operates efficiently and safely in both diesel and natural gas modes. Tuning may be necessary to optimize performance.
Maintenance and Monitoring: Regularly inspect and maintain the converted genset to ensure that it continues to operate safely and efficiently. Monitoring systems can help detect and address issues promptly.
Training: Ensure that the operators and maintenance personnel are trained in the operation and maintenance of the dual fuel genset. They should be familiar with safety protocols and emergency procedures.
Cost-Benefit Analysis: Consider the cost of the conversion and the expected savings in fuel costs and emissions reduction. Calculate the payback period to determine if the conversion is economically viable for your specific application.
It is essential to consult with experts or specialized companies experienced in dual fuel conversions for diesel gensets, as the process can be complex and requires expertise in engine modification and safety considerations. Additionally, keep in mind that the success of a dual fuel conversion depends on factors like the quality of the natural gas supply, the type of genset, and the intended application.