Two new adiabatic 5,000 m3/hr cooling and ventilation units have been installed, ensuring that the air in the production hall around the injection molding machines is constantly refreshed with filtered outside air, creating a comfortable working climate in which any noxious vapors and odors emitted are vented out.
The adiabatic units operate on the principle of evaporative cooling. The ambient temperature is lowered by some 6° Celsius indirectly, with the help of a heat exchanger. During the winter, the heat recovery module is automatically switched on.
Each 5,000 m3/hr unit consumes approximately 4 kWh of electricity and 2 m3 of water per month. Rainwater may also be used instead of tap water.
It is a system that has proven invaluable in these times of corona, when ventilation is key, as it’s based on a continuous flow of refreshing air rather than on the recycled indoor air relied on by traditional air conditioning systems alone. And it has allowed us to address two separate issues with one solution: fresh air for our employees, even after the coronavirus crisis has abated and we have an environmentally friendly air circulation system.
NP Plastics has also taken the step of replacing all outdoor lighting and the fluorescent lights in the production and office areas with LED light fixtures. Motion detectors, installed everywhere but the production areas, ensure the lights are switched off in unoccupied rooms. The benefits are twofold: we now have better lit work areas and energy saving of some 80%.
Energy efficiency: all-electric injection molding machines
As part of our machinery upgrade plan, we have now purchased our first two all-electric injection molding machines, reducing our primary energy consumption by 30%.
Going forward, our sustainability journey will continue in 2021 with the installation of solar panels on the flat roof of our production hall.
We are also steadily moving ahead with our green product portfolio. Already offered in recycled resins, our full range of horticultural products are now also available made from recycled PP derived from post-consumer waste.