Solar water heating system uses sun energy to produce hot water in various fields such as domestic, industrial, and commercial purposes. Energy from the sunlight is absorbed by the solar panels and converts it to heat energy provided by sun. In today’s life solar water heating systems are very popular as solar energy is one of the clean and renewable sources of energy. A person can get hot water with free of cost and pollution free. In most system, a small pump is used to circulate the heat transfer fluid to where it is immediately needed or to a store from which it can be used later but in solar water heating system it is made up of hot water cylinders .A back-up heat source is required to ensure that the water is heated to the sufficient temperature on days when light levels are limited .The water in the cylinder is then fed to your taps and showers to provide hot water for your home.
#: Evacuated Tube collectors
Evacuated-tube collectors is the most recent technology, which was introduced in the late 1970’s .several types are available, with the common element being a glass-tube surrounding an absorber plate. Because the space inside the tube is the vacuum, which is far superior insulator than air, these collectors have much better heat retention than the glazing design of flat-plate collectors. It is made up of double layer borosilicate glass-tubes evacuated for providing insulation. The outer wall of the inner tube is coated with selective absorbing material. This helps absorption of solar radiation and transfers heat to the water which flows through the inner tube. The curved shape of the tubes allows thermal absorption from a greater range of sun angles, and therefore for a greater portion of the day. In evacuated, the tubes fit independently in the header pipe and individually removed and replaced without having to decommission the entire system. Tubes with lower aerodynamic drag due to air being able to run around them, proving less wind-drag in some high wind location and work exceptionally well in cloudy and rainy seasons.
#: Maintenance
Maintenances Cost for solar water heating systems are generally very low .Most solar water heating system comes with years of warranty and requires little maintenances. Once fitted on the roof of building towards facing sunlight check everything working out properly. The most important thing is to check with any leaks is there because leaks of antifreeze will produce some smell. Check thoroughly by an accelerated installer every 3-7 years, or as specified by your installer .The other thing is to see the pump in a well maintained system the pump can last for more than 10 years.
#: cost effective
Customers are concerned with installed system costs and evacuated tubes can benefit both the installer and the customer. The high performance of evacuated tube solar collectors in challenging condition can provide a more even output throughout the year. It is very less expensive than flat-plate collectors with equivalent winter output. Labor is the large portion of total system cost and the modular nature of the evacuated tube collectors allows assembly by a single installer on the roof. Many evacuated collectors are compatible with drain back systems and this eliminate the need for expensive overheat protection. Larger system of solar water heating can be used in hotel, industries and hospitals. By using solar water heating system we can achieve saving on energy bills, it provides overall benefits to human society Solar water heating systems are a great way to reduce energy costs associated with heating water. Rather than relying on fossil fuels, there is another option and that is to use solar energy.
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