环境温度对发电机组的影响

由于环境状况对柴油发电机组运行的影响很大，所以对环境要求有一系列的标准规定。柴油发电机组所标定的功率都是针对某一特定的环境状况而言的，环境状况是指柴油发电机组运行地点的环境大气压力、温度和相对湿度，它们对柴油发电机的性能和工作效率有很大影响。

As environmental conditions have a great impact on the operation of diesel generators, there are a series of standard regulations for environmental requirements. The calibrated power of the diesel generator is for a specific environmental condition. The environmental condition refers to the ambient atmospheric pressure, temperature and relative humidity at the operating location of the diesel generator. They have an great impact on the performance and working efficiency of the diesel generator. 

当环境大气压力降低、温度升高和相对湿度增大时，吸入柴油机汽缸内的干空气就会减少，柴油机的功率就会降低。反之，柴油机的功率会增加。那么当环境温度过低对当水箱冷却水温度过低时，润滑油温度随之下降，机油在气温较低时粘度较大，其流动性变差，不仅增加柴油发电机组的零件磨损，而且由于零件运动阻力增大，使机械功率损失增加，柴油发电机组的输出功率就会降低。

When the ambient atmospheric pressure decreases,the temperature increases, and the relative humidity increases, the dry air sucked into the cylinder of the diesel engine will decrease, and the power of the diesel engine will decrease. Conversely, the engine power will increase. Then when the ambient temperature is too low, when the temperature of the cooling water in the radiator is too low, the temperature of the lubricating oil will decrease accordingly. When the temperature is low, the viscosity of the oil will be higher and its fluidity will become worse. This will not only increase the wear of the parts of the generator, but also mechanical power loss because of the part movement resistance increased, and the output power of the  generator will decrease.