IBERSOL Sustainability Report 2017

SUSTAINABILITY REPORT 2017 We improved our air conditioning systems In general, air conditioning systems have a considerableweight on consumption. Energy efficient fans, equipment which is key to ensuring air quality in kitchens and restaurants, were installed, leading to an estimated energy savings of 70% compared to standard fans. Variable speed drives Exhaust and extraction fans work at nominal speed, and mechanical valves or deflectors are used to control flow. This strangulation in flow leads to signif- icant pressure loss and reduced efficiency. To change this inefficient form of controlling flow, we placed electronic variable speed drives in the exhaust and extraction fans. By varying the speed - and the consumption of the fan motor -, flow can be adjusted without using any mechanical elements, resulting in significant energy savings. Main advantages of variable speed drives: • Extension of the fan motor lifecycle, as a result of a reduction in mechanical shocks and of the prolonged life of mechanical parts; • No need to control the power factor due to the reduction of energy; • Can be bypassed when variable speed drive fails; • Wide range of speed, torque and power; • Less maintenance thanks to a reduction in mechanical stress; • The use of electronic variable speed drives as high-efficiency electric fan motors results in an energy savings rate of up to 50%. 51