The water which is heated by the help of solar energy is the solar water heater. This solar heating system comprises of solar thermal collectors, and a fluid system which is used to convey the heat to the point where it will be used. For running the system electricity may be used to pump the fluid, and have a reservoir to store the heat.
A solar water heater generates more energy at a relatively lower cost. These solar water heater collectors are more capable enough in generating energy from the sun.
The job of solar hot water system is to provide full or at least a large quantity of your house hold hot water needs for few months in the year. To get a better return for your investment, it is necessary that you will definitely get a right shape hot water system that will provide good results in your cold climate.
In climates where there are freezing temperatures, the water in solar collectors is in danger of freezing. No hot water is produced when this happens, and its possible that the collectors or piping could be damaged when the water expands as it freezes. However, its perfectly possible to get solar thermal hot water in a cold climate.
The most common way is to use glycol-based solutions in the collectors. This requires a closed loop system where the heat is transferred from the glycol solution into the water you use in your house via a heat exchanger. These systems are more expensive than simpler systems, but they are much more resistant to freezing and can continue to produce heat through the middle of a cold winter.
You may need to have a tank less of hot water heater as a help as they may not create enough for your requirements when there is a long stretch of cloudy weather, in that time also they will still create hot water. And can save the water for the old persons in the families so that they can avoid from using the cold water.
The glycol acts as antifreeze, preventing the pipes from freezing. These solutions are typically 50/50 glycol and water.
There are two heaters: active and passive, these active heaters can team up with glycol as long as there is a closed collector loop. Active glycol systems generally come with a heavy price, but they are accepted to be the ultimate choice for very cold climates.
