Cleaning Exhaust Air, Saving Energy Costs


Various climate change arrangements over recent decades have repeatedly shown that it is fundamentally difficult to achieve a reduction in pollutant emissions. This is why in times of climate change, a future-oriented energy consciousness is necessary more than ever. Under a future-oriented energy consciousness should be understood a right rating of the energy consumption potential measured by the total benefit. Only those who know how much energy they consume and those who create transparency in energy costs can save energy accordingly and reduce their carbon dioxide emissions.

A false sense of energy, as well as environmental awareness when it comes to exhaust air purification, can be damaging. Some managers either try not to invest into an exhaust air filtration system or they try to keep the investment low by purchasing unsuitable filter elements, which create more costs in the end.

Large amounts of exhaust air cause a high energy consumption of the ventilation systems as well as considerable heating costs in the winter. Unsuitable filter elements like mechanical filters do not reduce the energy consumption remarkably, do not have a highly separation efficiency and need frequent investments for filter exchanges.

However, alternative technologies not only clean the exhaust air, but also reduces energy costs and carbon dioxide emissions. The energy savings then result in amortization times of less than 2 years. KMA Umwelttechnik is specialized on exhaust air filtration systems for diecasting machines. With the customized KMA extraction hood at each diecasting machine, the exhaust air is captured right at the emission source. By not allowing fumes to get dispersed in the hall, a nonessential increase of the exhaust air volume, which needs to be purified, is avoided because a high air volume always means high energy consumption. Each diecasting machine is also equipped with one decentralized compact filter system. The filter units are electrostatic precipitators, which ensure highly effective separations of smoke, dust, and fine mist whilst using little energy. Unsuitable filter types can quickly clog and become ineffective, leading to excessive costs associated with filter replacement and disposal. However, changing the electrostatic filter cells is not necessary and they never obstruct the air flow through the exhaust system. The electrostatic filter is an economical and durable filter medium for many applications. Because of the highly separation efficiency of the electrostatic precipitator the purified exhaust air can be led back into the production hall. So, at the same time, this method avoids heating costs during the winter period, because the transported air to outdoors must not be replaced with the same amount of cold air from outside, which needs to be heated up first. These facts decrease the company┬┤s operation costs and carbon dioxide (CO2) emissions.

An interesting aspect about modern solutions for air purification is the energy efficiency. Air treatment systems with a disadvantageous layout can cause enormous running costs. A modern solution, however, can help to reduce the energy consumption and operating costs significantly, permitting a short payback period on air filtration installations.