Solar Power is the new word!

Solar power is the latest word on everybody’s lips, but what exactly is solar power, how does it work and will installing a solar geyser really help save you money and reduce your monthly electricity bill?

Our knowledgeable team at Henkoly Solar Power Solutions have crafted this page to help you understand solar energy and hopefully it will also convince you to finally take that step towards becoming energy-independent and of course – green! However, if you have any questions that we failed to answer here, feel free to contact one of our friendly advisers today.

What is a solar geyser or a solar water heater?

A Solar Geyser, or solar water heater, uses the sun to heat water.  It is best known in a residential setting to provide hot domestic water. Designs suitable for hot climates can be much simpler and cheaper, such as in South Africa, and can be considered an appropriate technology for these places. The global solar thermal market is currently dominated by China, Europe, and Japan. In many climates, a solar hot water system can provide up to 85% of domestic hot water energy. This can include domestic non-electric concentrating solar thermal systems. Click here to read more about our Solar Geysers.

How does a solar geyser work?

In order to heat water using solar energy, a collector, often fastened to a roof or a wall facing the sun, heats working fluid that is either pumped (active system) or driven by natural convection (passive system) through it. The collector could be made of a simple glass topped insulated box with a flat solar absorber made of sheet metal attached to copper pipes and painted black, or a set of metal tubes surrounded by an evacuated (near vacuum) glass cylinder. Heat is stored in a hot water storage tank. The volume of this tank needs to be larger with solar heating systems in order to allow for bad weather, and because the optimum final temperature for the solar collector is lower than a typical immersion or combustion heater. The heat transfer fluid (HTF) for the absorber may be the hot water from the tank, but more commonly (at least in active systems) is a separate loop of fluid containing anti-freeze and a corrosion inhibitor which delivers heat to the tank through a heat exchanger (commonly a coil of copper tubing within the tank. Click here to read more about our Solar Geysers.

Can a solar geyser or a solar water heater help me save money on my monthly electricity bill?

Yes! By installing a solar water heater, or a solar geyser you can most definitely save money on your monthly electricity bill! Just have a look at the pie-chart showing a breakdown of what exactly consumes electricity within the average South African

Energy Costs for a Typical South African Household
Energy Costs for a Typical South African Household

home. If you are still not convinced, feel free to contact one Henkoly’s representatives to discuss your concerns directly with you.

Are there other ways to save electricity and become independent from Eskom / City Power?

There are many ways in which you can save electricity (and money!) at home. Using solar energy is one of the most efficient ways in doing so. Learn more about our Grid-Tie Systems if you are really serious about using an alternative to Eskom’s electricity grid. You could also replace your conventional light bulbs with eco-friendly LED Lights.