Save energy costs with retrofit extraction solutions from Kemper

Even with individual retrofits, Kemper customers can save money: For welding, for example, an existing exhaust air set can be converted into a recirculation unit with the mechanical WallMaster filter from Kemper, i.e. recirculated air instead of exhaust air. This means that with the help of the retrofit, the heated shop air can be fed back into the room in a purified state. An exhaust arm with 1,000 cbm/h causes an energy loss of approximately 4,100 kWh per heating period (October 15 to April 15) in exhaust air mode. This energy loss can be prevented by retrofitting from exhaust air to recirculated air. This corresponds to a saving of approximately 375 liters of heating oil or 406 cubic meters of natural gas L per exhaust arm. Another advantage of the WallMaster is that it also works on extraction elements from other manufacturers.

Further savings result when central extraction systems for welding fumes are converted from continuous operation to automatic extraction power regulation. "As a rule, central extraction systems for several workstations do not require maximum power on a permanent basis," says Manfred Könning, Chief Technical Officer (CTO) at Kemper GmbH. "This changeover is achieved with the help of a frequency converter and intelligent control." This permanently adjusts the motor speed of the fan and thus the power consumption to the current demand. Reducing the motor speed by 20 percent, for example, lowers power consumption and thus energy consumption by almost 50 percent. Regular maintenance, which can be carried out with the annual safety inspection, offers further savings potential. This keeps equipment and systems up to date. A filter change when it is due also reduces energy consumption in an extraction system. Dirty filters increase the resistance of the air flow, and extraction systems consume more energy than those with new filters.