Why not mine with solar energy

1. Perpetual motion machine is not in line with the law of conservation of energy, so it can not be done with solar energy or gravity!

2.

The advantages of solar heating:

< H2 > 1. Solar heating can not only store the heat energy of the day, but also store the solar energy of a week, and even achieve cross season energy storage, which can store the solar energy of spring, summer and autumn for heating season demand

2. The shape of the collector can be designed according to the surrounding environment to make the whole environment harmonious and balanced. And the collector can be placed vertically, which can not only avoid overheating in summer, but also provide heating in winter

The water tank can be installed underground to save the space on the ground, and it is not affected by underground moisture and rain

Solar heating can be combined with auxiliary energy, including oil fired boiler, gas furnace, biomass boiler, coal-fired boiler, electric heating, heat pump, etc., to meet your heating needs to the maximum extent

Energy saving and environmental protection, can be said to be the biggest advantage of solar heating, in the non heating period, can use heating water, in the heating period, compared with other heating equipment every month several hundred heating fee, electricity, gas fee, solar heating on energy saving is incomparable, and will not proce carbon dioxide, carbon monoxide and other exhaust gas, very environmental protection and safety

Solar heating has the advantages of high efficiency, long service life, fast heat supply speed and high temperature. The surface temperature of radiator can be increased by at least 90 ℃ in a few minutes. Life is longer than the average heating life, the longest can reach 50 years

< H2 > disadvantages of solar heating:

1. solar heating has high requirements for buildings, which requires that the building should face south, there should be a large enough area of collector on the surface or beside the building, and the glass of the building should be energy-saving

2. the material of solar heating system is required to be high, and the pipes and fittings are required to have the characteristics of high temperature resistance, heat preservation, anti-corrosion and flame retardancy.

3. the thermal resistance of solar heating system to the ground is required to be less than 0.05 m2. ℃ / W, and wood floor and blanket can not be used. The width of ground expansion joint shall be greater than 20 mm, and the thickness of filling layer shall be greater than 50 mm

< / OL > < H2 > reference: Internet entry

3. Reason 1: there is a misunderstanding among the public

for the general public, the most common solar proct is water heater“ Laoguang has the habit of taking a shower every day, and the hot water consumption is large. It is reasonable to welcome energy-saving and environmental friendly solar water heaters. But this is not the case

in Guangdong, where the annual sunshine time is more than 2000 hours, the popularization rate of solar water heater is only 2%. According to Chen Pengcun, vice president of Guangdong Solar Energy Association, the current installation is mainly for schools, hospitals, factories and other collective users, with few indivial households

"it's mainly because of cognition." For example, he was worried that it would not work on cloudy days, and that the initial investment would be too large, Chen said. He said that this is a complete misunderstanding. Guangdong has a long sunshine time and a large amount of radiation, and only 60 to 80 days of cloudy days every year; Even in cloudy days, the solar water heater can absorb heat. If it is cloudy for a long time, it can also be used with electricity and gas

in addition, the use of solar water heaters is also very cost-effective. Take a family of three as an example. The initial installation cost is two or three thousand yuan, but after the installation, at least eight or nine degrees of electricity can be saved every day. More than 1000 yuan of electricity can be saved in one year, and the cost can be recovered in two or three years

the second reason: the management department is not active

in addition to energy saving, the use of solar energy will also bring huge social benefits such as environmental protection to the local. According to statistics, Kunming, the most mature city of solar energy utilization in China, can save 80000 tons of standard coal every year, rece 11000 tons of carbon dioxide and 445 tons of sulfur dioxide, becoming a veritable "Solar City"

with such environmental protection and energy saving, the utilization rate of solar water heaters in China has reached more than 10%, which is far higher than that in Guangdong. In Tibet, Yunnan and other areas with good solar energy conditions, the penetration rate has reached 30%; Even in Jiangsu, Zhejiang and other provinces where solar energy conditions are far inferior to Guangdong, the utilization rate is nearly 20%< According to the analysis of instry insiders, in addition to the understanding of users, the enthusiasm of local management departments is also the key. For example, in Kunming, the relevant departments have given clear guidelines for the installation of solar water heaters

and in Guangdong? So far, there is no clear plan for solar water heaters in Guangdong, let alone guidance or encouragement, Chen said. The reporter asked the relevant person in charge of the planning department of Guangzhou for confirmation, and the answer was: there is no such plan at present, so it is better for the public to consult or report to the nearest planning branch before installation. However, the reporter learned that a small number of retail investors who have been installed at present are basically "stolen" without declaration

the third reason is that the property management office of the residential area does not allow the solar water heater to be energy-saving and environmental friendly, but some residents who live in the residential area encounter another problem when they want to install it, that is, the property management office of the residential area does not allow it, because it "affects the appearance". Miss Zeng, who lives in a large building in Panyu, told this newspaper that she had planned to install the solar hot water pipe on her roof, but the property management department blocked it on the ground of affecting the appearance and threatened to cut off water and electricity

in fact, it is not uncommon that such interference at the property management site can not use solar energy. In this regard, the person in charge of a large-scale solar water heater factory in Guangdong also said that the community can be installed in a unified way, just like installing outdoor units of air conditioners, "it's also very beautiful.". But this person also suggested that the solar water heater should be installed in the new residential building, so that the style can be unified and the central heating can be provided. Each household only needs to install a hot tap, which is not only beautiful in appearance, but also cost-effective. "It's also a matching model for new housing in some cities in the mainland," he said

4. Ha ha, no, solar power is direct current. Secondly, the power output per square meter of power generation panel is very small. To drive the air conditioning, your roof has to be full. Secondly, monocrystalline silicon panel is very expensive, and the resistance becomes larger after a long time, recing the power generation

5. Today's smart phones generally have a battery capacity of 5V, 1200-1600mah, or 6-8wh watt hours
it can be used for four or five hours, with an average power of 1-1.5w. (if it can be used for 10 hours, the energy consumption is lower)
the solar cell as big as a smart phone is also more than 1.5W, so it's not the reason for the large panel

the main reason is that the light is not stable, there is power generation at one time and there is excess power generation at the other, so it is often shut down
therefore, if the power generated by the solar cell is charged to the lithium battery, the voltage will be stable, and it is not easy to shut down,
the excess power will not be wasted when stored
this is the solar charger on the market. It doesn't have energy storage. It works intermittently or ups and downs. It can't be used as a power supply directly on mobile phones

6.

A few years ago, solar water heaters were very popular because they were very energy-saving. Although they were expensive, they were still recognized by the common people. The reason why few people buy solar water heaters now is that they don't work well in winter or cloudy days, especially in northern families, In winter, the use of solar water heater is very inconvenient, so we graally turn to the use of gas water heater or electric water heater

and the electric water heater, we can also completely hide it in the upper side of the integrated ceiling of the toilet, so it can not occupy the space of the toilet. For some functions of electric water heaters, you don't have to choose those fancy functions. The key is to find an electric water heater with brand protection. After all, this thing is also dangerous. A better brand will not have leakage. We should put safety first

7.

This is a beautiful looking brain hole problem, which is difficult to achieve in reality. Then, this may be an answer in the future, and become a reality. Why do you say that? And look down

let's focus on who applies solar energy technology best: sunswif team is the best one in the world to drive cars with solar energy technology. They built a solar powered sports car called Eve in 2012, which was approved by the Australian government in 2016 and allowed to go on the road legally

first of all, the mass proction of new energy vehicles using solar energy technology can't beat the Toyota Prius whose cumulative sales exceeded 10 million vehicles in the world (only 76 sales in China in 2016, forming a huge contrast, which is also a scene)

in the global scope, the Prius, which has formed a huge influence, relies on its hybrid technology to achieve the characteristics of low fuel consumption and high cost performance. At the same time, it has the courage to try other energy-saving applications, among which the solar skylight is one

8. Two points, one, many places are dry and lack of water, drink enough and take a bath
Second, e to economic constraints, do you think they can afford to buy things even if they are short of food
in places with better economy, those who live better than you, such as South Africa. Don't think the whole of Africa is the primitive society you remember!