The Magma is a screw heat exchanger with one or two shafts. Depending on the parameters and the available space, you can opt for heating by the jacket, the shaft and/or the screw flights. The heating effect can be achieved using water, steam, pressurised steam, oil and other convenient fluids. The required heating surface is calculated on the basis of the product’s delta T factor and a number of product parameters. To guarantee the desired rise in temperature, it is important to know the specific heat, thermal conductivity and heat transfer coefficient of the product.
The hard part is determining the total heat transfer coefficient. This consists of 3 components: the temperature transfer from the solid to the metal, the conduction through the metal and the transfer from the metal to the heating medium. In most cases, the transfer from the product to the metal is the limiting factor. It is also usually unknown. Fortunately, Klinkenberg has a testing area where the heat transfer coefficient can be calculated. We therefore invite you to come and measure the correct parameters with our screw heat exchanger when faced with these complex issues.
Magma compact version ®
The main problem that we hear from clients is that a sizeable heating area is needed to achieve the desired rise in temperature, which results in fairly large machines. Most clients are short of space and don’t have room for a machine of that size; if they had, they would still rather use the valuable space for something else. At the start of 2008, Klinkenberg set about meeting this demand and built several prototype machines, which resulted in the patented Magma compact version. The big advantage of this machine is that the heating surface can be adjusted without changing the external dimensions.
If there is too little heating, we increase the surface. There is no magic to it, just the required drop or increase in temperature – simple, fast and always guaranteed.
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