Can solar cells be used in ordinary people s homes in China?

It's really difficult for the time being, the first floor obviously doesn't understand much, I'll explain the mistake of the first floor first, first of all, what is the total power of household appliances in an ordinary family? How can you have to be safe 3000w calculation, besides, refrigerators, TVs, air conditioners are all inductive loads, and the starting power is several times or even 10 times the normal power, how can the 500W inverter be enough, at least 3000W inverter, this kind of inverter** is about 2 to 3 pieces of a watt, how much does it cost? Calculate the daily electricity safety of 4 degrees, calculate the 3 consecutive days of rainy days and 50% discharge protection of the battery, the battery needs at least 12v200ah 10 batteries, one is currently about 1300, how much is this?

Then we talk about battery modules, and the power generation of modules is not based on the algorithm of 100W modules generating 10 hours a day = 1kWh. The power generation power of the module (for example, he marked 100W) is tested under a standard condition, do you think that our light intensity is different every day, can the power generation be the same, taking Beijing as an example, the average daily power generation can only be calculated for 4 hours, which is 100W 4=. Then I also take Beijing as an example, the user needs 4 kWh of electricity per day, then the daily power generation of the battery panel is about 6-7 degrees, if it is a completely independent system, the minimum light in winter is calculated as an hour (Beijing), then the power of the required panel is 6kwh, that is, the module needs 2300W, and the current ** of the panel is about 9 W, how much is this?

Well, I'd say if it's a standalone user to install a set of at least 4w blocks. Then I will briefly explain the roof projects in Europe, there are indeed a lot, but mainly in Germany, and they are not completely independent, basically the low-voltage side grid-connected system combined with the municipal network, there is no need to consider the minimum sunlight and batteries in winter, which can save a lot of money (it costs a lot of money to do this system, I don't know how much), and then the German users install this kind of roof project ** is to give a lot of subsidies, and the excess electricity that cannot be used can also be sold to**, Although there are many forms of returns, in general, users only need to spend very little money, all of which are repaid, which is a lot of money. Another point, the population of Europe is not as dense as China, many of them are the type of small villa yards, China's big cities are the kind of high-rise buildings do not have their extensive installation conditions, so on the whole, China's large-scale installation of that kind of roof project in recent years is unrealistic, but at present, China is still relatively supportive of large-scale photovoltaic power plants, and also provides some support policies and subsidies, there is still development in this regard, I don't know if I count clearly.

Now the biggest obstacle to popularization to the family is still the ** problem. Let's not talk about electrical appliances such as air conditioners and induction cookers. Speaking of refrigerator color TV plus lighting, according to a conservative estimate, 30kWh per month, that is, one kilowatt of electricity per day, calculated with 10 hours of light per day, it needs 100W of photocell power, and now the photocell of one peak watt is 28 yuan.

The investment in photocells is 2,800 yuan. A set of 12V100Ah batteries is also required for 600 yuan, and another 500W pure sine wave inverter is more than 1000 yuan, and the non-positive sine wave inverter is low, but the damage to the inductive load is large. Plus cables, etc., totaling more than 5,000 yuan, and at this time the most conservative estimate.

If the electricity consumption is large, the cost is even greater.

Two problems can be solved to achieve this:

1.Financial subsidies for solar power generation. At present, the scope of subsidies under our national Golden Sun Program is too small to benefit ordinary families.

2.The solar home power generation system is integrated into the national grid, and the electricity that cannot be used is sold to the state, and what is the price of electricity.

Now China has not solved these two problems and cannot achieve them in the short term.

Foreign countries can be applied to ordinary people's homes because of the above two points, which are profitable, and subsidies reduce the high cost of solar power generation. Save electricity, and the surplus electricity can also be sold to the state. China, look at the policy!

One square solar panel can produce 150-160W of power, and about 20 square meters of solar panels can be used for daily use, and the inverter loss is about 80% of the power.

However, the photoelectric conversion efficiency is also high, and it is more suitable for power generation in outdoor sunlight; Thin-film solar cells, relative to the cost of equipment is higher, but the cost of consumption and battery is very low, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the weak light effect is very good, and it can also generate electricity under ordinary lights, such as solar cells on the calculator.

EVA is used to bond and fix the tempered glass and the main body of power generation (such as cells), the advantages and disadvantages of transparent EVA material directly affect the life of the module, and the EVA exposed to the air is easy to age and yellow, thereby affecting the light transmittance of the module.

In addition to the quality of EVA itself, the lamination process of module manufacturers also has a great impact, such as the EVA adhesive bonding is not up to standard, and the bonding strength between EVA and tempered glass and backplate is not enough, which will cause EVA to age prematurely and affect the life of the module.

Summary. This mainly depends on how much power your household appliances are, what is the effective power generation time of solar energy, according to the power and working hours of your household appliances to determine the electricity consumption of a day, and then, choose the power of the solar panel according to the effective light time to calculate the amount of electricity that the solar panel can generate in a day, so that you can determine how much solar panel to use. For example, if your family uses 6 kWh 6 7 kWh of electricity a day, you can install kilowatts to 2 kilowatts of solar panels to generate electricity, and in winter, because the light time is relatively short, you can add a few more panels to increase the total wattage of solar panels.

How many solar panels can meet household electricity?

How many square meters can meet the household electricity.

The electricity of an ordinary household is about three times a month, and this level of electricity can be met by ten square meters of solar panels. With the current technology, the photovoltaic panels of the photovoltaic power generation device can generate about three degrees of electricity per square meter. The monthly power generation of 10 square meters of photovoltaic panels is more than four.

It can meet the monthly electricity consumption of an ordinary household.

Two 500w solar panels are not enough for household electricity, because the total power of two 500w solar panels is only 1000 watts, and the total power of all household appliances is much greater than 1000 watts, the rated power of an air conditioner alone is 2000 watts, in addition to refrigerators, washing machines, etc., so two 500w solar panels are not able to run with all household appliances.

One square solar panel can produce 150-160w power, if you do not turn on the rice cooker and computer refrigerator at the same time, about 3kw photovoltaic modules can, about 20 square solar panels can be used for daily use, and the inverter loss is about 80% of the power.

This mainly depends on how much power your household appliances are, what is the effective power generation time of solar energy, according to the power and working hours of your household appliances to determine the electricity consumption of a day, and then, choose the power of the solar panel according to the effective light time to calculate the amount of electricity that the solar panel can generate in a day, so that you can determine how much solar panel to use. For example, if your family uses 6 kWh 6 7 kWh of electricity a day, you can install kilowatts to 2 kilowatts of solar panels to generate electricity, and in winter, because the light time is relatively short, you can add a few more panels to increase the total wattage of solar panels.

In winter, 60 kilowatt-hours of electricity are used for heating a day, and how many square meters need to be installed.

1 square meter is calculated as 300w, a total of 60kw, about 60 degrees per hour, and the light is hourly every day, 390 degrees a day.

1. Household solar power can be used.

2. If you use household power generation solar power generation to operate and dismantle power generation, the electricity generated is enough to meet the daily electricity expenses of a family of 3-5 people, so that you do not need to pay electricity bills to the national grid.

3. Therefore, it is still a relatively promising amenity jujube, but it is better to do systematic market research in advance if you want to make an investment.

1. Aerospace, aerospace development and application in high-tech fields.

Due to their reliability and unique superiority, solar cells are the first to show their skills in aerospace technology. In 1958, the solar cell was on the artificial satellite for the first time. So far, aerospace and satellites have never been separated from solar cells; In the future development of space, lunar solar cells will play an important role.

On other planets, the current Mars probes "Courage" and "Opportunity", solar cells are the main power source for their work.

2. Application in the field of industrial and agricultural production.

As a new energy source, solar cells have also been widely used in industrial and agricultural production. In the uninhabited mountains and seas, various lighthouse beacons, various satellite communication receiving stations, various remote monitoring, meteorological observation stations, automatic signal lights of highways and railways, etc., solar cells have become the preferred power source. In addition, solar cells are used in many applications for automatic control.

Quantity inspection and measurement of products in the factory; production of various sensors; Photocells are used to respond to various wavelengths, sensitivity, different colors of detection light, and so on.

3. Application in the field of civil life.

At present, there are many types and names of small photovoltaic products of solar cells, which have become consumer power sources in many aspects.

1) Small-scale photovoltaic systems.

Photovoltaic charger: It can charge 2 No. 5 nickel-cadmium batteries, or make a small 3V power supply.

Solar calculator: The power supply for the pocket portable calculator can work with light.

Solar hood: The small fan is automatically adjusted by sunlight, which is a good product for cooling in summer.

Solar portable lamp: It uses solar cells to charge and store energy with batteries, which is especially suitable for use in areas without electricity and on the move.

Solar pavilion lamp: unique, day out and night bright, automatic start and stop.

2) A large number of various electrical equipment and backup power supply.

I'm a solar system engineer, and since the situation you described can't be accurately calculated, you first need to determine if there is any shade in your city and near the building, because the solar radiation is different in each place, so the amount of electricity generated is different, and you also need to determine the orientation of the building.

Now suppose you are located in Beijing, and then the 40-long face faces due south, suppose the electricity consumption for your home for one month is 200kWh (kWh), the solar system is a grid-connected system, and the panels used are 100W per square meter of amorphous photovoltaic curtain wall panels.

The system is configured to replace the ordinary curtain wall glass with 30 flat 100W amorphous silicon panels, facing due south, with a total area of 45 square meters, that is, an area of 1 3 of the south-facing area, with an annual power generation of 2325kWh (kWh) and an average monthly power generation of 194 kWh. The ** of this scheme is about 6 7w yuan.

If the whole house is covered with solar panels, it will require about 2,670 solar panels, and the cost of the solar panels is 2314285 yuan.

(20*3*40+20*3*10)*2*2 3=4000 square meters, if the solar cell is not square meters, the conservative algorithm is 1200 yuan, 4000*1200=4,800,000 yuan.

But all four sides of your full solar panels, the power generation on the shade side is not high, unreasonable If you ask whether it is used for the above-mentioned electrical appliances of internal users: it is definitely not enough!

Solar power is only used in places where thermal power and hydropower cannot be built.

According to experts, the current cost of photovoltaic power generation is still 10 times that of thermal power.

Depending on your situation, it's impossible to achieve because of the high cost, and the small size of the area, which doesn't have a lot of power.

Watch the news. Changsha's first "solar villa" amazes Lugu and can produce 15 kilowatt-hours of electricity per day.

Abstract] Changsha has made new progress in the application of solar photovoltaic power generation, and the first "solar villa" was unveiled in Lugu, Changsha High-tech Zone. According to Zhang Weidong, chairman of Shenzhou Optoelectronics, the investment in this "solar villa" is nearly 1.1 million yuan (including decoration costs, electrical fees, etc.), of which 200,000 yuan is invested in solar power generation facilities. Changsha has made new progress in the application of solar photovoltaic power generation, and the first "solar villa" was unveiled in Lugu, Changsha High-tech Zone.

The reporter learned yesterday from Hunan Shenzhou Optoelectronic Energy **** that the "full environmental protection ecological energy-saving solar power supply, heating demonstration house" power generation system developed by the company was put into operation not long ago, and has begun to install a group of batteries for the solar power generation system of the villa. In the future, this "solar villa" will be able to use solar power for household appliances day and night, rain or shine.

According to Zhang Weidong, chairman of Shenzhou Optoelectronics, the investment in this "solar villa" is nearly 1.1 million yuan (including decoration costs, electrical fees, etc.), of which 200,000 yuan is invested in solar power generation facilities. A total of 54 solar panels are placed on the roof of the villa, with a total area of 41 square meters, which can generate kilowatt hours of electricity in 1 hour in sunny weather. According to the climatic characteristics of Changsha, the "solar villa" can "self-produce" about 15 kilowatt-hours of electricity per day on average, which is enough to meet the electricity demand of indoor air conditioners, refrigerators, televisions and other electrical appliances.

Korla, June 18 -- On June 17, the author learned that the 2009 solar power supply system project for the construction of electric power in areas without electricity of the Second Agricultural Division of the Xinjiang Production and Construction Corps started construction and installation in the asbestos mine of the 36th Regiment. The total project funds are 3124937 million yuan, and a new 45 kilowatt photovoltaic solar power station will be built to solve the problem of electricity consumption of the mine's public facilities.

Asbestos mine is located in the middle of the southern foot of Altun Mountain at the junction of Xinjiang and Qinghai, with an altitude of 3,200 meters, the natural environment is harsh, the production and living electricity here is tight, and there are often power outages, especially at the peak of electricity consumption, power outages are very common, the lives of the masses of workers and the production of the mine are affected, in order to solve the power problem, the party committee of the mine starts from the height of ensuring people's livelihood, stability and development. Seize the opportunity of the state to implement the 2009 solar power supply system project in the power construction of non-electric areas, and actively strive to win this preferential policy.

At present, under the condition that the state finance has allocated 10,000 yuan of funds, and enterprises rely on bank loans and self-raised funds of 10,000 yuan, a 45 kilowatt photovoltaic solar power station has been installed in the mine.