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Why are Flywheels not more common as an energy storage? Based on the Wikipedia article they seem pretty amazing if magnetic bearings are used.
by tanto 10y ago
Why are Flywheels not more common as an energy storage? Based on the Wikipedia article they seem pretty amazing if magnetic bearings are used.
- dalke 10y agohttps://www.theguardian.com/science/blog/2014/jan/27/flywheel-hybrid-flybrid https://www.theguardian.com/science/blog/2014/jan/27/flywhee... comments: > Sounds promising. So could flybrids compete with battery hybrids? Rob Thring of Loughborough University's department of aeronautical and automotive engineering wonders if that's a fair question. "Flywheels are a good way of storing energy. But as for comparing them to batteries – it's like comparing petrol and diesel. Both have merit," he says. "Flywheels' have a lower energy density compared to batteries, but their power density is higher." > Meaning flywheels can release stored energy far more quickly than batteries. So despite the fact that they can't store as much energy for the same weight, they might actually be great for city-centre driving, characterised by short distances and endless stop-starts. Also, batteries can come in diverse shapes.
- brudgers 10y agoFlywheels are typically used on reciprocating engines such as those found in automobiles.