At the end of 17 years, there was a magical highway of more than 1,000 meters that once brushed off the circle of friends of Ji'nan citizens, as the world's first freeway photovoltaic test section was formally opened to traffic in Jinan.
The transparent pavement is covered with photovoltaic panels, and the vehicles traveling in and out of the solar cell are on the road. What do you think about it?
Just five days after its official launch, a nearly two-meter-long pavement disappeared, apparently some of the "gentlemen on the beam" are more interested in the technology.After the incident, both the media began to contact the 'national and' Morality calls for social morals. There are also comments that are pessimistic about the development of photovoltaic roads.
The author believes that the future of photovoltaic roads will not be stolen, scientific and technological innovation is to dare to take the hardest road, and this is the most difficult to walk the final result is the most brilliant.
Why should the photovoltaic panels into the road
The integration of photovoltaic panels and pavement is indeed a difficult point, transparent paving materials have a certain intensity for traffic but also have considerable strength to meet the national norms of road pavement deformation requirements, but also to be better Pass the vehicle's impact on the road to prevent damage to the solar panels buried in it.
However, in essence, this high-speed photovoltaic installation of transparent concrete is a thermosetting plastic only, and strengthen the performance of transparent plastic method of thousands, so that the breakthrough in road technology and its visual impact is not as big.
What really deserves our attention is why solar panels have to be built in. Some people say it is to save the land, but this idea is not in fact realistic. Although the land in big cities is very tense today, it is impossible for even the suburbs Luxury is used to build large-scale solar power plants, while farmland in rural areas is used to ensure food security. However, there are still lots of land in western deserts and mountains that can be used to develop wind and solar energy.
China does not have a large proportion of arable land and no more arable land in India. Even in the eastern part of Zhejiang Province, such as the mountainous areas of northern Zhejiang, hills with a slope greater than 30 degrees can be used to build photovoltaic power plants. Can build road sheds, the photovoltaic panels hanging in the top of the greenhouse, so that the cost of construction than buried in the road to save more.
What is the significance of doing so? I think it is because of the characteristics of photovoltaic power generation technology decisions. Photovoltaic circuit board can convert sunlight into electricity, but the voltage is not large, and is a direct current, while the unit area of the panel generating capacity In fact, very small.
These factors determine the cost of electricity generated by photovoltaic devices that is used as much as possible locally or that have a quantum advantage to build spectacular, expensive substations that are built into the array of circuit boards, but even spectacular photovoltaic power plants The electricity generated is also very limited and can only be sent to nearby towns or to the nearby national grid, so that it is virtually impossible to establish a PV power plant that is located far from the central city or where it is not worth accessing the national grid.
For these reasons, there are not many solar power plants that make money: the Ivango solar-thermal power station is probably one that is located in the Mojave Desert in southwestern Las Vegas and is a running Solar thermal power generation project with 3,500 acres of heliostats that focus on the solar energy on the boiler top of the solar power plant - completed by Beckett Construction, NRG Energy, Google and BrightSource Energy Cooperative operation - the largest solar power plant in operation in the world - supplies power to Las Vegas several tens of kilometers away, which is not yet representative of the benefits of photovoltaic power plants due to the lack of use of photovoltaic technology.
Not all cities are geographically suitable for use in solar power technology, as Las Vegas does - after all, there are only a handful of oasis cities around the desert, so some scholars have suggested that solar power generation technology should be as far as possible Use.And proportional to the surrounding electricity consumption in fact, only the structure of the road and housing are two, so the battery into the road it is not difficult to understand, the essence is to use nearby solar energy.
The nature of PV is commercial exploration
It is currently not feasible to deploy solar panels on the roof or on the roof for local use of solar energy.Playing the panels on the exterior of the building is not only risk of shedding but also affects the aesthetics of the building as well as the light pollution caused by laying solar panels on the roof, It only applies to buildings that can not build solar water heaters but are not too high and are greatly affected by the wind and neither of them can answer the question that there is no need for a small voltage DC in civil buildings.
A truly commercialized photovoltaic device is a solar-powered pole that collects solar energy and wind energy stored in batteries during the day and illuminates the electricity in the battery at night, leveraging the original city grid if not enough. The new utility pole is still in many Cities are used, but government-subsidized solar-powered poles, which are used locally, are even proportionally more expensive than PV plants, mostly because of the need for batteries and more associated equipment.
To make matters worse, after the price of photovoltaic panels in China fell due to capacity increase, high-density batteries and related equipment were stolen by the theft gangs. As early as 16 years of cases of such stolen photovoltaic devices across the region occurred from time to time, The reason for this is that according to the words of an inter-provincial theft gang cracked by the police in Yanchi County, it was "stealing photovoltaic power cables to make money quickly. There were several thousand yuan of income in one night, and we blame ourselves for being too corrupt and embarked on a criminal road ...... '.
And because of the theft and other factors, Luoyang City abandoned the solar street light, so it is no wonder that after the media heard of the loss of a photovoltaic pavement, the business outlook was considered 'cool.'
For the current photovoltaic path, the purpose of the study is not to find new scientific laws but to solve the energy problems of cities in a real part, and the whole project of PVH is carried out under the operation of commercialized investment companies So essentially this is a business exploration.
This exploration is very innovative, mainly in two aspects: First, the combination of solar panels to the road to save the cost of managing operations and the second is to put the future hope of commercialization of electric vehicles to provide electricity That is to say, to increase the selling price of PV products rather than just blindly saving costs. Since the PV road is a business model, then we should analyze the issues of operation and management as stolen.
Research and Analysis of Stolen Photovoltaic Roads
At the beginning of a photovoltaic pavement was missing, the road investment company Qilu Traffic Development Group, although the police were reported but for cautious consideration of the person in charge of the interview stressed that the media is not sure if it was stolen. However, With the in-depth investigation of the field, now basically can be sure to be stolen.But the theft of thieves thieves can be called thieves also .In the choice of theft location to avoid the surveillance camera, cut open a "hole", the pavement Of a transparent concrete friction layer is lost, the scene was cut open a 'wound' width of 10-15 cm, a length of 1.85 meters, in addition, there are several other photovoltaic pavement components have been heavily hit marks and suspected to be Liquid corrosion marks.
According to the Qilu Evening News, if from a monetary point of view, it is obviously not worthwhile to destroy the transparent concrete friction layer of the photovoltaic pavement, and the value of the missing items on the scene is very low. From the perspective of destruction, the 'spoilers May be interested in technology '.
Engineering Constructor Shandong Guang Shi Energy Co., Ltd. official said that in the process of construction of photovoltaic pavement construction, many strangers met, was closed construction at that time, but they still rushed to the construction site, some people take pictures, some people Steal components. '' Before the components are not covered, to steal components, steal technology, now also over to steal, it is puzzling! 'From the above point of view there are many Internet users think' Bacheng is a spy Stealing technology '.
I do not agree with this analysis, because the core technology is stolen, stolen technology has limited significance in bulk commodities.Sulphoaluminate cement This kind of cement was invented by Chinese scientists in the 1970s, then released to the world related Until now, China has been producing the vast majority of sulphoaluminate cement because the relative raw materials in China are plentiful and the supporting technologies are quite mature. The development of commodity technology is to be afraid of price war.
The real reason I think the analysis may be that the theft gang cheating, rather than purely interested in technology.Because the hammering, chemical corrosion and saw a walk for analysis This is not like the general characteristics of commercial technology theft, nor This is necessary.
From the analysis of stakeholders, we can draw the conclusion that they are disappointed. The price of solar panels is not high, and the profit and cost of being a criminal activity are completely out of proportion. In short, since this is a commercial act, we can not be afraid In the face of this or that realistic problem, reducing the reliance on expensive equipment and reducing the cost of materials and management is the right way. From this theft, we can see that PVH actually did a good job, but also exposed the difficulty of repairing pavement damage However, just because this road is hard to come by, the rewards are exceptionally high. Scientific and technological innovation means we should not be afraid of going marketizing this difficult road .
