New 'windless' air conditioner comes to Hong Kong... but it's not cheap
Japanese-designed system offers big saving on power bills, says firm introducing it in city
At first glance, the aluminium pipes in the middle of the showroom may not look special. Yet they may help solve a problem that dogs many Hong Kong businesses: how do you keep customers cool without it literally and figuratively costing the earth?
The droplets of water on the surface of the pipes offer a clue.
"It is from condensation," explains David Mak Tun-kit, executive director of Ecowin Distribution Hong Kong. "It's just like taking a can of Coke out of the fridge."
The system, pioneered by Japanese company Ecofactory, works by pumping water cooled to about seven degrees Celsius through the pipes, absorbing heat and humidity. In winter, the system can be reversed, with the water heated to about 40 degrees to keep the room warm. Heating and cooling takes place in an outdoor unit, and water is reused.
And, because it does not require power-hungry fans to blow out chilled air, the system uses about 30 per cent less power than regular air conditioners - offering big savings. According to government figures for 2011, 30 per cent of Hong Kong's electricity is used on air conditioning.
"It is energy-saving and saves the environment," Mak said of the Ecowin system. "It's also windless, so you feel more comfortable, and soundless."