What are the advantages of solar water heaters

As a new energy source, solar energy has three major characteristics compared to conventional energy sources:

First: it is the source of the most abundant energy that humans can use. Clean, pollution-free, environmentally friendly, inexhaustible. It is estimated that over the past 1.1 billion years, the sun has consumed 2% of its energy. In the future, this will be enough to supply humans on earth for billions of years. It is truly inexhaustible.

Second: There is solar energy everywhere on earth, which can be developed and used locally without transportation problems, especially for greenhouses and solar rooms, solar cookers and ovens. high temperaturee, seawater desalination devices, water pumps. , Thermal power generation devices and solar medical equipment. Rural areas, islands and isolated areas where transportation is underdeveloped have greater use value. Areas between 50 and 60 degrees north and south latitude, where the annual sunshine duration is 1,600 to 2,400 hours (hours), are generally thought to have abundant solar energy that can be used provided that a certain price is spent initially. A sum of money is invested to make good use of solar energy. After installing the device, energy will be delivered to your door continuously, free of charge, and only a small amount of equipment maintenance costs will be spent during this period.

Third: Solar energy is a clean energy source. During development and use, no waste residue, waste water, gas rwaste or noise will not be produced and this will not affect the ecological balance. Absolutely no pollution or public nuisance will be caused.

Fourth: Solar energy does not add thermal load to the Earth. This is a particularly important advantage of solar energy. This is why systems that use solar energy are also called “variable energy systems.” Because when we use solar energy to do work, even though it eventually turns into heat, if we don't use it to do work, it will eventually turn into heat.

Fifth: Solar Energy Safety. Nuclear power generation poses a risk of nuclear leakage. Once a nuclear leak occurs, it will cause a huge ecological crisis. However, solar energy absolutely has no such situation and is very reliable.

Advantages of solar products:

1. Unlimited energy is widely available and energy is provided at the lowest cost. As long as there is sunshine, it can perform photothermal conversion and work all year round.

2. Green and environmentally friendly products. As a clean, renewable energy source, solar energy has unrivaled advantages over other energy sources: no environmental pollution and no safety risks.

3. Long life expectancy. For example, the vacuum tube, the main component of the solar water heater, has a lifespan of around fifteen years. After expiration and replacement, other components may continue to be used. for another cycle.

4. When used in conjunction with other energy sources, it can operate in all weathers.

5. Significant economic benefits. One-time investment and long-term benefits are the distinctive features of psolar products.

Summary - The use of solar energy is imperative

In view of the advantages and disadvantages of the use of solar energy, the development of solar energy remains very desirable. Visual pollution is very subjective, and who can guarantee that a huge collector will not become a spectacular landscape, and the question of cost cannot be short-sighted. Money and space spent can be exchanged over time. Think about it: in a few years, all non-renewable energy will be exhausted. At that time, solar energy will be extremely valuable. As for the problem of poor stability, this is a fact that no one can change. see God The relationship between man and nature is not the same. The birth and death of all things have their own reasons. This is something humans cannot change. Therefore, the use of solar energy is imperative.OK.

Dtechnical areas of solar energy utilization

Human beings use solar energy in only three major technical areas, namely photothermal conversion, photovoltaic conversion and photochemical conversion. Additionally, there is energy storage technology. .

Photochemical conversion of sunlight includes: photosynthesis, photoelectrochemistry, photosensitive chemistry and photodecomposition reaction. Currently, this technical field is still at the experimental research stage.

Solar photoelectric conversion mainly includes various types of solar panels and power supply systems.

A solar cell is a device that directly converts sunlight into electrical energy.

The photoelectric efficiency of solar cells is about 10-14%, and their product types mainly include monocrystalline silicon, siliconpolycrystalline and amorphous silicon. The price of domestic products (referring to the total cost of photovoltaic devices) is about 60-80% yuan/peak watt.

Solar cells have a wide range of applications. For example, artificial satellites, unmanned weather stations, communications stations, television relay stations, solar clocks, electric fences, black lights, navigation beacons and railway signals.

Sunlight thermal conversion technology has the largest number of products. Such as water heaters, water boilers, dryers, heating and cooling, greenhouses and solar rooms, solar cookers and high temperature ovens, seawater desalination devices, pumps water heaters, thermal power generation devices and solar medical equipment.