当散热器装于发动机尾端，机组定位应使散热器尽可能靠近排气口，否则可能产生热空气回流，建议散热器离出口最大的距离为150mm。

When the radiator is installed at the end of the engine, the radiator is as close as possible to the exhaust port, otherwise hot air may flow back. It is recommended that the maximum distance between the radiator and the outlet is 150mm.

若此发电机组不能按上述方法定位，则必须在系统中设计一条排风槽。该风槽的最小截面面积必须与散热器的冷却面积相等，一般可采用一条配有钢制法兰以便连接散热器及排风百叶的帆布风槽。风槽的弯头必须为完好的半径。如需长流程管道，则管道的界面面积必须放大以降低散热器的背压。

If the generator set cannot be positioned according to the above method, an exhaust duct must be designed in the system. The minimum cross-sectional area of the air duct must be equal to the cooling area of the radiator. Generally, a canvas air duct equipped with a steel flange to connect the radiator and exhaust louvers. The elbow of the wind channel must be a perfect radius. If a long process pipeline is required, the interface area of the pipeline must be enlarged to reduce the back pressure of the radiator.

空气进出口通常配置百叶窗，此时必须考虑百叶窗所占有的无效面积。柴油机冷却和燃烧所需要的大量空气通常会遭人忽视。为此，推荐进气口面积至少应为发动机散热有效面积的两倍。

The air inlet and outlet are usually equipped with blinds, and the ineffective area occupied by the blinds must be considered at this time. The large amount of air required for cooling and combustion of diesel engines is often overlooked. For this reason, it is recommended that the air intake area should be at least twice the effective area of the engine's heat dissipation.

所有的孔口应加以保护以防雨水的进入。在冬季，机组处于备用待机状态时，机房应保持温度，空气进出口各散入出口应具有可调节的百叶窗，以便机组停用时能开关。可以选择配备发动机冷却系统加热器，以保证发电机组的低温启动性能。

All openings should be protected to prevent rainwater from entering. In winter, when the generator is in standby state, the temperature of the generator room should be maintained, and the air inlet and outlet should have adjustable shutters so that the generator can be opened and closed when the unit is out of service. You can  choose a engine cooling system heater to ensure the low temperature start performance of the generator.