Preface: In life, especially in summer, the brightness and heat of the sun will make people feel very hot. With the progress of society, solar light and heat are also used in life. Now many families will install solar water heaters, which is also very practical in life.
1. Use of solar energyEspecially in rural households, most household heads have installed solar energy, which captures the sun's energy to generate electricity, and then uses electricity to heat water for washing at night. You can take a hot shower directly on a sunny day, if the sun's rays are stronger, the temperature will be higher. When the weather is sunny, most families choose to dry their duvets in the sun, which can eliminate dust mites and bacteria. According to records, humans have been using solar energy for over 3,000 years.Solar energy can be used as a source of power and energy. As long as it is used, it will be very practical for humans.
2. Convenience of lifeIn addition to water heaters allowing everyone to use hot water, solar energy can also dry clothes, canned fruits and other foods. There are even solar power banks and solar heating When the weather is cold in winter, many people choose to use them for heating. Although the heat from the sun is not strong in winter, the heat can be collected via collectors and the heat from the sun can be used to provide electrical energy. Once the sun radiates, it transfers heat to these collectors. Alright. When it is lifted, it is converted into heating and it will be very hot when used in the room.
3. Usage rateIn life, the power bank is an indispensable equipmentit to go out every day. Most power banks in the market now use electricity. Solar power banks are also more convenient, but they are not as useful as direct charging, because solar power banks charge slower than regular power banks, so many people in a hurry to going out find solar power banks not so practical. Solar power banks mainly consist of solar cells, which absorb light energy and convert it into electricity that can be used by everyone.
You can make a simple estimate.
Typically, each square meter of solar panels can provide 100 W of power, so 100 square meters corresponds to 10 kW.
The electricity produced by solar panels is direct current and an inverter is needed to convert direct current to alternating current.
The price per watt of small inverters is more expensive than that of large ones. The smaller the inverter, the more expensive it is. It varies from a few cents to a few yuan per watt. buy one too cheap, even for 1 yuan. Just a watt of money.
10KW is equal to 10,000 yuan.
Generally, the cost of the inverter accounts for 6-10% of the entire photovoltaic system. If calculated at 8%, the price of the system is around 125,000.
I don't know where the author plans to install it.
Assuming the duration of electricity production is 1,500 hours per year, then 10 KW can generate 15,000 kilowatt hours of electricity. Calculated at 0.8 yuan/kilowatt hour, the income is approximately 12,000 yuan.
Energy production by solar panelsThere will be an attenuation every year, but the attenuation is not large, 1-2% every year. Considering 1500 hours is a conservative estimate, I won't consider it.
Thus, if the life cycleis 20 years old, he will have an income of 240,000.
The above is just an estimate and does not take into account investment costs etc. The exact amount depends on the specific conditions.
Some regions now support it and may receive further discounts.
Author: Zhihu user
Link: https://www.zhihu.com/question/20310517/answer/24280018
Source: Zhihu
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