The introduction of solar panels has revolutionized the way many people acquire and use energy in their homes. The most visible representation of this technology is the ubiquitous solar panel that can now be seen on many houses. If one were to look closely however, there is a different kind of solar panel gradually appearing, that could also be of interest to the energy conscious homeowner. This different panel is a solar water heating module, and rather than a flat panel it may be composed of a series of black tubes. There are many factors to consider when deciding if a solar water heating system is the right choice for your home.
Essentially the solar water heating system takes the energy from the sun, and uses it to heat the water in the home. The technology has become more efficient to the point that is now a viable system to use domestically. It may be of interest to note that this technology can be employed in most homes in the world. The system needs only a few hours of direct sunlight every day. If the weather is very changeable it will still work, although the efficiency may be compromised. For this reason if your home is located in an area with changeable weather, it may be a good idea to use a solar water heating system to supplement your current setup if possible.
There are three different types of solar water heater in common use, they are Batch Collectors, Evacuated Tube Collectors and Flat Plate Collectors. These collectors all work in a different way and it’s important to understand the differences. The Batch Collector is also known in the trade as an “Integrated Collector Storage” or “ICS system” and it’s a tank that collects solar radiation. The tank heats the water inside it during the day to use instantly or at night. Evacuated Tube Collectors use a network of tubes, these tubes have the water inside them and they are sealed like a thermos flask. A vacuum is created inside the tubes which adds insulation to the heated water. This insulating property drastically reduces any heat loss and makes this system the most efficient on the market today. The Flat Plate Collector is a simple design which uses a solar collector plate fitted above the water pipes. Solar radiation is collected and transferred to the water flowing through the pipe system below. Both the Evacuated Tube Collector and Flat Plate Collector system also require the fitting of a water storage tank.
There may be concerns about whether or not a solar water heating system is compatible with your current water heating system. Depending upon where you live the solar solution itself may not be able to adequately heat your water. However, it could give your system a boost to help lower your bills. If you currently use a water heating system that uses a storage tank, then a solar water heating system should be capable of heating the water in your tank. However, using such a system together with a combination boiler is not recommended. If in doubt consult a reputable professional, they will be able to give an answer based on your specific requirements and current setup.
There are a few factors to consider before you take the plunge and install a solar water heater. The first consideration is whether your home receives enough sunshine. A good rule of thumb is if your home gets at least five hours of direct sunshine per day, that should be enough. Secondly is there a rooftop or other location that is not shaded to install the system on. Ideally this location should also face south for those north of the equator and vice versa, although east or west will also work, albeit with reduced efficiency. Is there room to install a larger water storage tank and is the current water heating system compatible. There is also the issue of investing in a system that may take many years to provide a return of your initial investment.
If you decide to fit a solar water heating system, will it actually reduce your energy bills.? This question can be hard to answer without knowing all the factors unique to your current situation. In addition to the factors covered earlier, the quality and cost of the system fitted will have an impact on how long it lasts, and how long it will take to recoup your investment. Homeowners are encouraged to seek out the best quality and most suitable system at the most competitive price possible.