What are the best Off-Grid Solar Water Heating SystemsHarry
Thermosiphon or Geyser Solar Water Systems Systems can be fully Off Grid depending on your situation. However you can have a 3kW immersion unit fitted into the tank if there is electricity available. Useful in extreme weather conditions or a night when there is limited or no light to generate energy on the solar panel. These solar water heating systems are the most cost effective renewable technology. A very easy way of producing hot water due to their simplicity in design and installation requirements. These can be installed in a couple of hours. The system is more common in hotter climate countries, but in recent years remote islands or campsites particularly where there is a season requirement for hot water find these systems very effective in northern latitudes. Convective movement of the liquid starts when liquid in the solar panel is heated, causing the liquid to expand and become less dense, and thus more buoyant than the cooler liquid in the bottom of the solar panel. Convection moves heated liquid upwards in the system as it is simultaneously replaced by cooler liquid returning by gravity. Ideally, the liquid flows easily because a good thermosiphon system should have very little hydraulic resistance to obstruct or slow natural circulation. The piping from the solar panel must rise from the panel to the cylinder which must all be above the solar panel. Hot liquid from the solar panel rises into the flow connection pipe, gravitates in to the cylinder and flows back through the return at a much lower temperature. This process continues naturally until the temperature of the water reaches an equilibrium with solar radiation input.