How to solve the light pollution of solar energy, how to use solar energy more effectively

Light pollution is a new source of environmental pollution after waste gas, waste water, waste residue and noise, which mainly includes white light pollution, artificial daytime pollution and colored light pollution. Light pollution is threatening people's health. In daily life, most of the common light pollution conditions are the dizziness of pedestrians and drivers caused by the reflection of mirrored buildings, and the discomfort caused by unreasonable lighting at night.

1. In order to reduce the harm of light pollution, a new urban pollution, the key is to strengthen urban planning and management, rationally arrange light sources, strengthen the management of advertising lights and neon lights, prohibit the use of high-power and strong light sources, control the use of high-power civil laser devices, and restrict the use of materials with large reflection coefficients. As ordinary people, on the one hand, do not stay in the light pollution area for a long time, if the light is too strong, the room can be installed with blinds or double curtains, according to the intensity of the light to adjust accordingly; On the other hand, the whole people should work to plant trees and flowers around the building complex, and plant turf widely to improve and adjust the lighting environment.

2. It is recommended that the state formulate technical specifications and corresponding laws and regulations related to light pollution. Few people in China are aware of the dangers of light pollution, so there is no unified standard in this regard. Experts believe that when the construction of urban night landscape in China is developing rapidly, it is necessary to formulate technical standards for landscape lighting as soon as possible.

Let's not take the detours that others have already taken. In addition, experts believe that it is also important to strengthen the standardized management of night landscape design and construction. At present, there are very few professional and technical personnel engaged in lighting design and construction in China, and many night landscapes that produce light pollution and light interference are caused by unscientific design and construction.

It is understood that Tianjin promulgated the "Technical Specifications for Urban Night Lighting", which is the first technical specification for night lighting in China. Beijing used to have a "standard for evaluating urban nightscape lighting projects" in the construction of night scenes, but there were only simple items to measure light pollution. Experts call for the lack of scientificity and standardization in the construction of urban night scenes to be changed urgently.

3. Vigorously promote the use of new energy-saving light sources. At this stage, although most places will consciously use energy-saving light sources, there are still most places that fail to consciously use energy-saving light source lighting.

Find some materials with low reflectivity and spread the surface.

So far, there has been little that can be done.

Now with the progress of science and technology, many things do not need to be done by human beings, and various high-tech have replaced manual work, saving a lot of effort for human beings, but at the same time, we need more energy. Let's not talk about other energy sources, let's talk about the electricity we are most familiar with.

Photothermal conversion is a method by which humans directly harvest sunlight energy. Conversion devices are basically divided into two categories: flat plate collectors and concentrating collectors. The former is when sunlight is directly shining on a black rough surface to heat up, the latter is used to concentrate light with mirrors or lenses to generate heat, and the latter is to use mirrors or lenses to concentrate light to generate heat, as in a solar house.

Solar energy is installed on the roof and onto a collector panel made of thin iron sheets, and the collector plate is heated by the sun, and the light becomes heat. When air flows under the collector plate, the heat can be carried away. When needed, it can be sent to the room through the air duct for heating.

Another way is photoelectric conversion. It is to directly convert solar energy into electricity through photoelectric equipment. The most common type of optoelectronic device is silicon cells.

The principle is that the silicon crystal material releases electrons under the irradiation of light, which is the photoelectric effect. Calculators, radios, automobiles, and even satellites use these silicon solar cells.

Installing a solar water heater is one aspect of harnessing solar energy.

Solar energy itself will not pollute the environment, and there is basically no pollution after solar energy utilization, but solar energy utilization equipment will cause a lot of pollution in the production process, although solar energy will not pollute the environment when working, but solar energy is very polluting to the environment in the production and manufacturing process. For example, the raw material of solar energy is polysilicon, and JD.com will emit trichlorosilane when processing solar cells, and trichlorosilane is also very polluting to the environment. Silicon tetrachloride will also be produced, which is very harmful to the human body, if the enterprise in order to save trouble and save production costs or the first process is not mature, the consequences of the inflow into the environment are unimaginable.

Solar energy is a complete power generation and discharge system, so it has a lot of spare parts, among which the most serious environmental pollution is the battery, if the scrapped battery can not be discarded outside, it can cause serious pollution to the local environment. There is no absolute clean energy in the world, and solar energy is also an industrial product, and it itself is polluting the environment.

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The use of solar energy does not have the negative effects you say.

The reason is that solar energy is the energy that the sun radiates to the earth, as long as the earth's heat balance is maintained. No matter how much solar energy we use, it only reduces the part that is directly converted into heat energy, so that solar energy is first converted into electrical energy, then converted into mechanical energy, thermal energy and other forms, and finally turned into thermal energy, and then emitted into space. There is no noticeable effect on the conservation of energy on the Earth.

Unlike fossil fuels, the solar energy (in the form of coal, oil, natural gas, etc.) accumulated by the earth over thousands of years is released in a short period of time, which makes the earth "feverish".

People robbed the sun of the heat that the sun originally sent to the ground in the air, and if this amount was large enough and for a long enough time, the ground would get much less heat. As a result, the ground temperature will decrease.

When the ground temperature drops, it will bring a series of catastrophic accidents to the earth.

The use of stationary solar photovoltaic grid-connected power generation is absolutely zero emission, without any mechanical transmission parts, low voltage, will not produce any electromagnetic radiation, nitrogen oxides, carbon dioxide emissions. Off-grid solar photovoltaic power generation will use batteries, and the service life of batteries is short, the disposal of waste batteries may cause some pollution to the environment, but the relative impact is still small.

If polysilicon, the main raw material of solar photovoltaic power generation, is not properly processed in the production process, silicon tetrachloride will indeed produce serious environmental pollution. But overall, solar PV is the safest and most environmentally friendly of all modes of power generation.