The selection of fuel tanks for diesel generator sets should be comprehensively judged based on the type of the unit, the usage scenario and maintenance requirements: For open-frame units, external fuel tanks are recommended; for silent units, bottom fuel tanks can be chosen. For long-term use, maintenance convenience should be given priority. The specific analysis is as follows:
1. External fuel tank: A practical choice for open-frame units
Core advantages: It is suitable for open-type diesel generator sets, with flexible installation. It is not restricted by the structure of the generator set, and can quickly adapt to generator sets of different powers and models. The fuel tank is independent of the unit, which is convenient for regular cleaning of oil stains and impurities, avoids the damage of diesel sediment to the fuel line, and extends the service life of the unit. The external fuel tank has a simple structure, a relatively low price, and different capacities can be selected according to demand, reducing the initial investment cost.
Applicable scenarios: Temporary power supply or backup power source, such as construction sites, exhibitions, emergency rescue and other scenarios, where rapid deployment is required and the usage frequency is relatively low. High maintenance convenience is required. Users need to clean the fuel tank regularly to ensure the fuel is clean and avoid fuel line blockage.
2. Bottom fuel tank: An integrated solution for silent units
Core advantages: It has compact structure and integrated design unit that saves space in the machine room, and is suitable for places that are sensitive to floor area. It has strong integrity and meets the requirements of silent units for concealment and aesthetics. It can increase the contact area between the unit and the ground, enhance the load-bearing capacity, and reduce vibration and noise.
Potential risk: Diesel that settles for a long time is prone to form impurities. If not cleaned regularly, it may clog the oil passage or damage the engine. Some of the bottom fuel tanks are made of synthetic organic plastic, which may undergo chemical reactions with diesel and accelerate the deposition of oil stains. The bottom oil tank of imported units is relatively expensive, and additional sewage pipes need to be configured or the units need to be raised to facilitate maintenance.
Applicable scenarios: Demand for silent units, such as hospitals, schools, office buildings and other places with strict noise control requirements. For long-term and fixed use, users must commit to regular maintenance and have the technical ability to clean the fuel tank.
3. Key Decision-making Factors
Unit type: For open-type units, external fuel tanks are preferred; for silent units, bottom fuel tanks can be considered.
Usage frequency: For temporary or low-frequency use, select an external fuel tank. For high-frequency or long-term use, enhanced maintenance is required. The bottom fuel tank should be chosen with caution.
Maintenance capability: Users need to assess whether their technical team can regularly clean the bottom fuel tank. If they lack the capability, it is recommended to install an external fuel tank.
Space and cost: When the space in the computer room is limited and the budget is sufficient, the bottom fuel tank can save space. Conversely, external fuel tanks are less costly and more flexible.
4. Suggestions for Industry Practice
Open-type units: Over 90% adopt external fuel tanks due to their simple maintenance and low cost.
Silent type unit: 60% of the bottom oil tank is selected, but it needs to be equipped with a sewage pipe or a raised design to balance aesthetics and practicality.
Long-term usage scenarios: Regardless of the type of fuel tank chosen, a regular maintenance system must be established to ensure the fuel is clean and the fuel passage is unobstructed.