China’s Shenzhen city builds giant air-conditioning system to cool entire Qianhai economic zone

[onebyone]

 

[Place Of Space]

mark...

 

[powastick]

Is it even energy efficient compare to small units?

 

[casual]

Is it even energy efficient compare to small units?

small units only cools rooms where as this cools cities. so far, this is the only system I've seen that lowers the temperature of a city. small units will make the city hotter.

 

[Mista]

Is it even energy efficient compare to small units?

It is. There are saving costs to be realized from economies of scale, and it frees up rooftop space as well.

Singapore is planning to implement in some these projects in our future public housing.

We've also made use of centralized cooling to cool outdoor spaces.

Air coolers to help NDP audience beat the heat

SINGAPORE — For the first time at next month’s National Day Parade, about 30 air coolers will be set up at the venue to give some spectators a bit of relief from the heat.

www.todayonline.com

The Airbitat Smart Coolers, each about 1.4m tall, projects cool air to an area of up to 25sqm.

It relies on an outdoor cooling system and functions using chilled water that runs from an underground district cooling plant at Marina Bay. The water typically goes through pipes to provide air-conditioning for buildings in the district, and some of the used water will be sent to a heat exchanger near the floating platform, and then to the air coolers through connected pipes to emerge as cool air streams at 24°C.

Mr Jimmy Khoo, 55, managing director of Singapore District Cooling, a subsidiary of SP Group, said that this saves 90 per cent in energy consumption compared to electricity-powered cooling devices.

Mr Gareth Tang, 37, general manager of Innosparks, an open laboratory of ST Engineering which developed the coolers, said that in using this system, each cooler costs 15 cents an hour to run, which is “10 times cheaper than conventional air conditioning”.

“If you run it for eight hours, from the morning to the evening, it only costs about a dollar,” he added.