在平屋頂上采用平鋪方式安裝光伏組件，似乎是想當(dāng)然的方式，不僅安裝量/面積可以大化，還有可能將光伏作為屋頂頂棚使用，增加空間面積。但事實上，在平屋頂上安裝工商業(yè)屋頂光伏組件，并不意味著您還應(yīng)該將其傾斜度設(shè)置為0度，我們需要考慮很多因素，應(yīng)避免平裝，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:

平鋪組件容易積灰，積灰可能造成10％甚至30%的發(fā)電量損失；

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，積水不易流出；

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

與傾斜安裝相比，發(fā)電量將減少；

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

投資回報期將更長；

The investment return period will be longer;

可能無法靠自然降雨來去除積灰；

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

傾斜安裝和純平鋪的光伏陣列發(fā)電量會有明顯的不同，通過對一個11.2kWp太陽能系統(tǒng)進(jìn)行仿真模擬，傾角分別為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.

仿真結(jié)果表明，如果傾角為0度，則11.2kWp系統(tǒng)年發(fā)電量約為13,480.3kWh，而在5度傾角下，該系統(tǒng)一年發(fā)電量達(dá)到14,066.9kWh。而事實上，當(dāng)傾角為10度時，該系統(tǒng)年發(fā)電量達(dá)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.

從結(jié)果中可以看出，每增加5度，系統(tǒng)每年增加500kWh的發(fā)電量（15度后，增加量會明顯減少，超過佳傾角后反而會更低）。而且，上述仿真模擬還沒有考慮低傾角安裝時由于積灰而造成的發(fā)電量損失。

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.

建議如果不愿意采用佳傾角來安裝的話，安裝傾角盡可能還是高一些。如果必須平鋪，建議也將傾角設(shè)計在5-10度之間。

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.

對于平屋頂來說，5-10度的角度也已經(jīng)足夠平了，而對于彩鋼瓦屋頂來說，一般都會留有3度以上的角度，相比增加傾角的額外成本來說，順其自然、隨坡就勢也是很好的選擇。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://51lib.com.cn進(jìn)行咨詢了解！

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://51lib.com.cn Consult and understand!