Ellie Stowe, marketing and communications supervisor at Kannegiesser, reckons that “the Kannegiesser Powerdry is the most powerful dryer on the market.”
She says that “our dryers operate using one of the lowest energy consumptions in the field… which ensures that our customers benefit from the most efficient dryer evaporation performance and reap the benefits of energy savings through a fully drying performance.”
Process control and heating management are, she says, the key to securing low energy consumption whilst shortening overall laundry processing times. And Stowe says that exploiting this combination “makes the Powerdry the most powerful and efficient batch dryer in the industry.”
Stowe claims that on its highest setting, the Powerdry can run up to four batches per hour “using the lowest energy consumption and shortest drying time through ECO2Power – it’s the ultimate in drying technology.” The Powerdry sits in a market which has seen an increase in diversity of items and materials. “Dryers, ironers and finishers,” says Stowe, “must cover this diversity and combine high output and evaporation performance with low energy consumption and textile care.” She adds that tests on damaged textiles show that after 50 cycles of washing and drying, chemical fibre damage can increase by up to three times because of the drying process in comparison to the wash process. This becomes more problematic when it’s remembered that apart from the cost of labour, textiles are the largest expense within a laundry. And this is why she says that “gentle drying will generate enormous cost savings and the key to cost reduction is to avoid over-drying. When water from textiles evaporates, any further heat input can be harmful to textiles, is a waste of energy and an unnecessary extension of process times.”
As Stowe describes it, the Powerdry measures linen temperature with InfraTouch control (within the inner cylinder so that the exact linen temperature is measured), together with supply air and exhaust air temperature. This allows optimal process adjustment. The result is a “maximum air circulation rate and an ideal distribution of the linen in the inner cylinder.” Overall, she says that a decrease in residual moisture occurs during the drying process and the air re-circulation rate increases by controlling the air re-circulation flap.
Notably, Stowe says that this higher air recirculation reduces demand for heat from the gas supplied by the heating element. And “to ensure optimum control, the linen drop curve inside the drum changes in line with the degree of textile dryness.”
In summarising the benefits of the Powerdry, Stowe thinks that laundries “will benefit from significant energy savings. And with an exact determination of material temperature will lead to an exact drying process through an accurate predetermined drying point.”