The heating & cooling units can be used for controlling the temperature of cells and liquids of all electrochemical cells including flow batteries and electrolysers. To the best of our knowledge a similar products cannot be found by any other companies in the field.

Controlling temperature of cells and liquids for flow batteries, electrolysers and other electrochemical flow cells is challenging and the default is to place cell and bottles inside a heating chamber. While Redox-Flow has recommended this solution (and still do) to our costumers it comes with a number of shortcomings:

• Most commercial heating chambers do not come with feed-through holes for electrical wires to the cell and must be drilled manually
• For high temperature operation pump must be placed outside the heating chamber and can result in long hydraulic connections
• In heating/cooling chambers, generally, the space is limited and setting up experiments becomes tedious and time consuming
• Chambers with both heating and cooling are in general very costly
• Due to limited thermal conductance through bottles and cells the time for reaching the set point temperature can be long (> 1-2 hours)

The solution developed by Redox-Flow.com comes as three different configurations/products that are based on the same components and can be interchanged depending on the purchased option (upgrading is always possible). All options are based on a PEEK flow body and aluminum block shown in the pictures below. The PEEK body contains one (variant 1) or two separate (variant 2) flow chambers for heating/cooling one or two independent liquids, respectively. The liquids in the experimental setup are circulated through the PEEK flow body and placed up against an aluminium heating/cooling plate, whereby heat is transferred to or from the liquids in the PEEK flow body. The aluminium plate is separated from the liquids in the experimental setup by a thin PTFE sheet, whereby corrosive/oxidative solutions also can be heated without corroding the aluminium plate.

Besides the possibility for placing the aluminium block on a heating plate, it also comes with holes for heat cartridges, cooling liquids and thermometers.

There are three basic options/products of the heating/cooling unit. For all products, the temperature can be controlled by circulating heating/cooling liquids through the aluminium block or by using a heat cartridge in the aluminium block. In two of the products, the temperature can also be controlled by placing the unit on a heating plate.

More information can be found under each of the products.