Innovative aluminium flat solar collector

A Hungarian SME has developed an innovative new flat solar collector. Key features: Heat-absorbing surface equals heat transferring surface resulting in the highest heat-performance and efficiency. There’s no mediatory unit between the heat-transferring surface of the absorber and the heating agent. This means no galvanic corrosion, which would work as insulation. There’s no bad pressing or assembling, which are all factors contributing to inefficiency. The main unit of this system is a hot pressed and uniquely alloyed aluminium plate. The plate has shallow channels for liquid that run parallel that are connected to each other. The tips of the plate lead into the distributing or collecting pipes supplying them with an ideal capacity of 1.7 litres and the two necessary inputs and outputs. This design is made from homogenous alloyed aluminium. It has really good heat conductivity (235 W/m°C) and is also weatherproof, non-corrosive, light (density not more than 2.8 kg/dm3), easy to work with and assemble and is one of the cheapest materials on the market. Surface treatment used on the alloyed aluminium plate is unglazed black elox coating, which has a high specific heat-absorbing rate of the solar radiation (near to 90%) while at the wave-length given by its own temperature the specific heat-emission rate is relatively low (about 10%).

The collector house is a really important part of this solar collector and for this purpose special alloyed aluminium frame profiles are used. This makes solar collector aesthetically attractive while reducing the mass.

The bottom of the collector-house is made of cold-rolled, alloyed aluminium panel.

Another important part of this solar collector is glazing. It helps to absorb more sun radiation on the free surface (that is 1.94 x 0.94m), while reducing the convective heat-loss of the absorber panel with its heat-insulating power. High purity, low iron, tempered antireflective solar glass is used.

The design is very solid, can be easily transported, and is snow– and hail-proof.

To increase the efficiency of this solar collector heat insulation is used.

This solar collector is designed to be dismountable if needed, the parts are replaceable and also the insides can be cleared of humidity.

Download this Tech of the Week as a PDF

You can download this Tech of the Week as a PDF file that you can share with co-workers. When viewed on a computer with an Internet connection, the PDF includes live links back to yet2.com and the technology listing.

Network and bookmark yet2.com