Solar water heater is a kind of water heater. It uses water to absorb heat by using sunlight. It is widely used in daily life. It has safety, environmental protection, energy saving, low cost, good temperature stability and long service life. Long-term advantages. However, most people do not know enough about it. The following is a small series of decoration homes to introduce the advantages and disadvantages of solar water heaters.
First, the advantages of solar water heaters
1. Energy saving and environmental protection have significant economic benefits
Solar energy is a renewable energy source. It has the characteristics of being incomplete, environmentally friendly and non-polluting. Only sunlight can cause abnormal operation. The energy-saving effect of solar water heaters is obvious, which can save a lot of electricity costs. Once invested, the investment can be recovered within 2 or 3 years.
2, safe, long service life
Solar energy only absorbs sunlight for heating, and there is no danger of gas poisoning and electric shock. It is safe and reliable to use. In addition, if used properly, its life span can be as long as 15 years.
3, multiple water supplies
The water tank of the solar water heater is large, and the heat preservation effect is good. It can simultaneously meet the water supply of multiple water points in the household, and realize the hot water demand of the constant temperature hot water of the whole family.
4, better temperature stability
As long as there is hot water in the water tank, the solar water heater will not appear to be hot first and then cold.
5, save money
In addition to rainy days, solar water heaters do not need other expenses, such as gas costs, electricity costs, in rainy weather, will have to use auxiliary heating device, and you have to pay for electricity, in fact, rainy days, the solar water heater is still at work, temperature of hot water generated only requires the user not to bathe, but the water in the tank temperature is higher than ordinary tap water temperature and therefore, even if cloudy days, electric water heaters it than the average power.
Second, the shortcomings of solar water heaters
1, the installation is complicated
The installation procedure of solar water heaters is complicated. If improperly installed, there will be no safety hazards and aesthetic effects. Moreover, solar water heaters are generally installed on the roof, and daily maintenance is troublesome.
2, too dependent on sunlight
Solar water heaters rely heavily on sunlight. On cloudy days or in winter, the heating effect will soon deteriorate, and it will be used all year round throughout the year. If electric heating is used, the power consumption is very large.
3, vulnerable to lightning strikes
If the solar water heater is installed at a high place, it must be within the protection range of the lightning rod, or install lightning protection facilities for the solar water heater to avoid lightning strikes.
4. The initial investment is large.
5, the installation limit is large
The requirements for the installation location of solar water heaters are also very strict. In the city, only the people who live on the top floor or have villas may be installed.
6, poor water quality
The water that has not been used in solar water heaters for a few days is generally hotter water, reaching 70 °C or above, especially in the summer when the weather is more than 2 days, the water will boil, and the temperature will be properly cooled at night to keep the water temperature at 60 °C- The 70°C zone has a long time, and this temperature zone is an excellent temperature for bacterial growth in water.
7, summer is easy to break
In the case of sunny summer, the water temperature up to the boiling point of less than two days, if a long time without water, such as the poor, when traveling, the state for a long time at a high temperature under high pressure in the tank will promote aging of seals, pressure Too large will cause the water tank to swell and also scale and shorten the life of the water tank. Therefore, if you are not at home for a long time, you should arrange for someone to put hot water on the hot water frequently, or place a cover on the vacuum tube collector to block the sunlight.
Through the above introduction, we must have a certain understanding of the advantages and disadvantages of solar water heaters. If you want to know more about solar water heaters, please continue to pay attention to the decoration home network.
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