The impact of ambient temperature on diesel generators is mainly reflected in power output, temperature rise, and the operating efficiency and life of the unit.
Power output: The power output of a diesel generator is directly affected by the ambient temperature. Generally speaking, the normal operating ambient temperature of a diesel generator is between -15 degrees Celsius and +40 degrees Celsius. Beyond this temperature range, other protective functions need to be added to the diesel generator, such as low-temperature start-up auxiliary measures, to ensure that the unit can still operate normally under extreme temperatures. In addition, when the ambient temperature exceeds 40 degrees Celsius, the power of the generator set will be corrected, because the increase in ambient temperature will make it difficult for the unit to dissipate heat, thereby affecting the output power of the unit.
Temperature rise: Changes in ambient temperature directly affect the temperature rise of a diesel generator. When the ambient temperature drops, the temperature rise of a conventional motor will decrease slightly, because the winding resistance decreases and the copper loss decreases. On the contrary, for every degree increase in ambient temperature, the temperature rise of a self-cooled motor will increase by 0.5~3 degrees Celsius, because the winding copper loss increases with the increase in temperature.
Operation efficiency and lifespan: Extreme changes in ambient temperature can also affect the operating efficiency and lifespan of diesel generators. For example, when operating in a low-temperature environment, the cooling water will take away a large amount of heat in the cylinder, increase heat loss, and increase fuel consumption, which in turn affects the operating efficiency of the unit. In addition, low temperatures may also cause water vapor on the inner wall of the cylinder to condense, forming a strong corrosive agent, causing serious corrosion to the inner wall of the cylinder, affecting the lifespan of the unit.
In summary, the impact of ambient temperature on diesel generators is multifaceted, including power output, temperature rise, operating efficiency and lifespan. Therefore, when using a diesel generator, the impact of ambient temperature should be fully considered, and corresponding protective measures should be taken when necessary to ensure the stable operation of the unit and extend its service life.
