In NZ, heating water can take up to 50% of a household power bill, so investing in energy-efficient technology in new homes makes sense. Solar thermodynamics is also an effective and economical heat source for large scale commercial and industrial hot water requirements.
The system consists of a lightweight aluminium solar panel (which works using a refrigerant, collecting heat from the sun, as well as from the surrounding atmosphere by natural convection) along with a hot water cylinder. Because the system is based on the temperature differential and does not rely on sunshine alone, it is effective day and night, whatever the weather.
The black solar panel is made from anodised aluminium and weighs only 8kg, so it does not require a consent. Its dimensions are 2m x 800cm and it looks very smart and unobtrusive installed. One panel is sufficient for up to 300L capacity cylinder.
There are two models of domestic cylinder, the Eco and the Ecotop. They are available in enamel or stainless steel, and all have a clean white exterior finish. All the cylinders have an electronic controller enabling different modes of operation. The controller is also PV (photo voltaic) panel compatible.
The Alternative Energy Company handle the refrigeration side of installation (fixing the solar panels, paircoil pipework to the cylinder and commissioning the system). Once installed correctly it is a totally maintenance-free system.
This solar thermodynamic technology fits well with designs where energy efficiency and sustainability are important. It futureproofs homes and commercial builds from rising electricity prices and is a responsible environmental choice because it produces zero carbon emissions, all while ensuring reliable, cost-effective hot water day and night, all year.