在平屋顶上采用平铺方式安装光伏组件，似乎是想当然的方式，不仅安装量/面积可以大化，还有可能将光伏作为屋顶顶棚使用，增加空间面积。但事实上，在平屋顶上安装工商业屋顶光伏组件，并不意味着您还应该将其倾斜度设置为0度，我们需要考虑很多因素，应避免平装，包括：

It seems to be a natural way to install PV modules on the flat roof in a flat way. Not only can the installation amount/area be increased, but also it is possible to use PV as the roof ceiling to increase the space area. But in fact, the installation of industrial and commercial roof PV modules on the flat roof does not mean that you should also set its inclination to 0 degrees. We need to consider many factors, and should avoid flat installation, including:

平铺组件容易积灰，积灰可能造成10％甚至30%的发电量损失；

The tiled components are easy to accumulate ash, which may cause 10% or even 30% loss of power generation;

清洗更不方便，积水不易流出；

It is more inconvenient to clean, and the accumulated water is not easy to flow out;

与倾斜安装相比，发电量将减少；

Compared with inclined installation, the power generation will be reduced;

投资回报期将更长；

The investment return period will be longer;

可能无法靠自然降雨来去除积灰；

It may not be possible to remove dust by natural rainfall;

倾斜安装和纯平铺的光伏阵列发电量会有明显的不同，通过对一个11.2kWp太阳能系统进行仿真模拟，倾角分别为10度、5度和0度。

There will be significant differences in the power generation of PV arrays installed at an angle of 10 degrees, 5 degrees and 0 degrees, respectively, through the simulation of a 11.2kWp solar system.

仿真结果表明，如果倾角为0度，则11.2kWp系统年发电量约为13,480.3kWh，而在5度倾角下，该系统一年发电量达到14,066.9kWh。而事实上，当倾角为10度时，该系统年发电量达到14,520kWh。

The simulation results show that if the inclination angle is 0 degrees, the annual power generation of the 11.2kWp system is about 13480.3kWh, while under the inclination angle of 5 degrees, the annual power generation of the system reaches 14066.9kWh. In fact, when the inclination angle is 10 degrees, the annual power generation of the system reaches 14520kWh.

从结果中可以看出，每增加5度，系统每年增加500kWh的发电量（15度后，增加量会明显减少，超过佳倾角后反而会更低）。而且，上述仿真模拟还没有考虑低倾角安装时由于积灰而造成的发电量损失。

It can be seen from the results that for every 5 degrees increase, the system will increase 500kWh of power generation per year (after 15 degrees, the increase will be significantly reduced, but it will be lower after exceeding the good inclination). Moreover, the above simulation has not taken into account the loss of power generation caused by ash deposition during installation with low inclination.

建议如果不愿意采用佳倾角来安装的话，安装倾角尽可能还是高一些。如果必须平铺，建议也将倾角设计在5-10度之间。

It is recommended that if you are not willing to use a good inclination angle for installation, the installation inclination should be as high as possible. If it must be tiled, it is recommended to also design the inclination between 5-10 degrees.

对于平屋顶来说，5-10度的角度也已经足够平了，而对于彩钢瓦屋顶来说，一般都会留有3度以上的角度，相比增加倾角的额外成本来说，顺其自然、随坡就势也是很好的选择。更多相关内容就来我们网站http://www.zdnygf.com进行咨询了解！

For the flat roof, the angle of 5-10 degrees is enough, while for the color steel tile roof, the angle of more than 3 degrees is usually reserved. Compared with the additional cost of increasing the inclination, it is also a good choice to let nature take its course and follow the slope. Come to our website for more relevant content http://www.zdnygf.com Consult and understand!