荷兰人制造巨型户外真空吸尘器
Dutch inventors have unveiled what they called the world’s first giant outside air vacuum cleaner – a large purifying system intended to filter out toxic tiny particles from the atmosphere surrounding the machine.
荷兰发明者公布了他们所谓的世界上第一台户外巨型真空吸尘器—一台旨在过滤周遭空气中有毒微粒的巨型空气过滤器。
"It's a large industrial filter about eight metres long, made of steel ... placed basically on top of buildings and it works like a big vacuum cleaner", said Henk Boersen, a spokesman for the Envinity Group which unveiled the system in Amsterdam.
The system is said to be able to suck in air from a 300-metre radius and from up to seven kilometres upwards.
It could treat some 800,000 cubic metres of air an hour, filtering out 100% of fine particles and 95% percent of ultra-fine particles, the company said, referring to tests carried out by the Energy Research Centre of the Netherlands (ECN) on its prototype.
A large column of air will pass through the filter and come out clear, Boersen told AFP on Tuesday, speaking on the sidelines of a major two-day offshore energy conference in Amsterdam.