No radiation, no pollution, no noise, no emissions from photovoltaic power!

No radiation

Photovoltaic power generation is the direct conversion of light energy into direct current energy through the properties of semiconductors, and the conversion of direct current into alternating current electricity through an inverter that can be used by us.

The PV system consists of PV modules, mounts, DC cables, inverters, AC cables, distribution cabinets, transformers, etc. The mounts are not electrically charged and naturally do not produce electromagnetic radiation. The PV modules and DC cables, which contain DC current with no change in direction, can only produce an electric field, not a magnetic field.

The output transformer, although AC, has a very low frequency of 50Hz and produces a very low magnetic field. The inverter is a device that converts direct current into alternating current and has a power electronic transformation inside, the frequency is usually 5-20KHz, so it will produce an alternating electric field, so it will also produce electromagnetic radiation. There are strict national standards for the electromagnetic compatibility of PV inverters.

The electromagnetic radiation of a PV inverter is about the same as that of a laptop computer and lower than that of an induction cooker, hairdryer or refrigerator compared to household appliances.

Therefore, the construction of photovoltaic power stations is not only not harmful to human health, but also can provide the earth with green and clean quality energy, which is the future direction of human energy development.

The manufacturing process is not "high energy"

I wonder how many people have vilified that PV power generation is highly polluting and the manufacturing process is highly energy intensive, and such rumours have spread more than once.

The photovoltaic manufacturing industry consists of four main segments: silicon purification, silicon ingots, photovoltaic cells and photovoltaic modules. Among them, the purification of crystalline silicon needs to be completed under high temperature conditions, requiring a large amount of electricity, accounting for about 56%-72% of the total energy consumption, is the most important chemical production process in the industry chain; and "high pollution" from the production of high-purity polysilicon by-products.

It is true that silicon purification is a large-scale, high-energy-consuming industry. However, this does not mean that PV products are high energy consumers, and the total energy consumed in the production of a unit of PV modules needs to be converted into electricity consumption and compared with the lifetime of the modules. 2015, the Ministry of Industry and Information Technology issued the "Photovoltaic Manufacturing Industry Standard Conditions", which stipulates that the electricity consumption of the polysilicon production process must be less than 120 kWh/kg; new and expansion projects must be less than 100 kWh/kg. This energy consumption level should be relatively close to the current world advanced level.

This level of energy consumption should be close to the current world advanced level. Based on the 25-year life of the PV module, the electricity generated by PV is much greater than the electricity consumed for production.

No light pollution

Light pollution is threatening people's health. In everyday life, most of the common conditions of light pollution are the dizziness of pedestrians and drivers caused by reflections from mirrored buildings and the discomfort caused by unreasonable lighting at night.

This is why people are concerned about whether there is light pollution from the installation of PV modules. In fact, the visible light reflection coefficient of ordinary toughened glass is 9% to 11%, which will not cause light pollution, and photovoltaic modules use the same type of glass as the building, which will also not cause light pollution.

The source of light pollution is visible light, and the cells of the internal power generation unit of the PV module will absorb visible light to convert it into electricity, which will further reduce the reflection of visible light.

And with technological innovation, many photovoltaic building materials can now be made into a frosted surface, which can reduce the reflection of visible light even more.

No noise, no emissions

These two points are relatively well understood, photovoltaic power generation is the conversion of solar energy into electricity, is photoelectric conversion, the process does not produce noise, there is no pollution emissions, very suitable for installation in residential and commercial and industrial rooftops.

In recent years, distributed photovoltaic hot development, most of them also see photovoltaic power generation suitable for installation on the roof, with energy saving and emission reduction function, but also heat insulation and waterproof.