Posts Tagged: Heating

12
Sep

2012

How the London Emirates Air Line Cable Car Powers its Cabins

The issue of energy has come up a lot when we talk about urban cable systems — and for a good reason. If cable is going to succeed as the modern, comfortable, city transit technology it claims to be, then such amenities as heating, air conditioning, video screens, wifi, and two-way communication systems are going to have to be standard features.

For most of their existence, gondola were not heated, cooled, or souped-up in any way because frankly, there was no need. If you’re skiing outside all day you don’t exactly want to step into air conditioning and heating is not necessary since you’re all bundled up and only inside for a few minutes at a time. But as cable moves into the urban realm, the issue of power becomes increasingly more significant.

Can cabins be heated and cooled?

Yes. For example, London’s new Emirates Air Line cable car has air conditioning. In fact, we’ve know that it was possible for a while, having had this discussion before, we just weren’t sure how.

The solar panel is not the answer

So how do cabins get power?

First off, definitely not from the small solar panels seen on the roof of some gondolas. Since gondola cabins aren’t connected to a power source, heating and cooling, etc, is not as straight forward as say, in a subway. But this doesn’t mean it can’t be done.

Last week an article came out about how the Emirates Air Line cable car in London utilizes ultracapacitors to provide power to each cabin. So there we go, voilá.

Each cabin has an ultracapacitor on the roof

But what does that mean and how does it work?

Ultracapacitors are like batteries in the sense that they both store energy. A capacitor, on the other hand, unlike a battery, can charge and discharge energy very, very quickly (like in a matter of seconds). In the case of the London gondola cabins,

“48V ultracapacitor modules fitted on top of each car [to] enable split-second, rapid energy charging of the modules on reaching the charging stations located at both turnaround points.”

Maxwell Technologies 48 V Ultra cap

Capacitors have a longer lifespan so you can repeat this process way more than with a battery — in this case, up to one million charge/discharge cycles — and they require little to no maintenance.

The rapid charge is key because it means that the capacitors can charge as the cabins pass through stations. A battery, on the other hand, would need a much longer charge period. Since the capacitor is continually charged through out the day, its physical size can be reduced. For a comparable battery system that would recharged at night, the sheer amount of batteries needed for each cabin would probably be far too heavy and too costly to be practical.

The ultracapacitors installed in the Emirates Air Line cable car were manufactured by Maxwell Technologies. The capacitors are a green technology that use electric fields, rather than chemical reactions, to store energy. The Maxwell 48V modules are the same capacitors used in hybrid buses and construction equipment. They can allow for high bursts of power needed to accelerate or to lift a heavy load (opposed to a gradual loss cruising or lowering a load) and they can quickly recapture energy from braking.

In conclusion, yes, gondolas/cable cars/aerial cable transit cabins can be individually supplied with enough energy to power temperature regulators, multi-media screens, and all the lighting necessary for your ultra-comfortable, ultra-modern, and ultra-fun cable experience. You just need to add ultracapacitors to the top of each cabin to charge everything up in the station and you’re good to go.



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05
May

2011

The 5 Most Common (and Cynical) Arguments People Use Against Urban Gondola Transit

ANY CHARACTER HERE

One thing I love about cable is the questions and discussions it creates.

Generally speaking, people are curious creatures and when confronted with the strange, bizarre and not-so-everyday, they want to know more. They ask questions, ponder and – for better or for worse – they come to their own conclusions.

Those people are amazing because, as I’ve discussed before, they’re skeptics not cynics. And skeptics are amazing. The cynics, not so much.

But what does one do about the cynics? Not much, I guess. These are people who’ve already passed judgement on something the moment they hear about it despite knowing virtually nothing about what they’re passing judgement on. Just look at the comments here and here about the potential for an Urban Gondola in Calgary and you’ll see what I mean.

They’re cynics not skeptics.

But for the sake of curiosity, I thought it might be fun to bring together in one place the 5 cynical arguments I hear most commonly about urban gondola transit . . . and suggest a few ways of dealing with them. Enjoy!

Read more



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23
Sep

2010

Hot & Cold

A common question: Can gondolas be heated and/or air conditioned?

It’s a logical question. As gondolas find more usage in the urban environment, heating and air conditioning is going to become more and more standard.

Current urban applications haven’t required cooling and heating systems for the simple reason that most people aren’t in the vehicles long enough for it to be a necessity (as most urban cable transit lines are no more than a few kilometers in length).

This is going to change in the future and the industry has only recently caught up with the problem.

The problem is basic, but has major implications: Gondolas (typically) are not connected to any power source, so where then do they draw their power from?

The typical answer lies in a combination of batteries and solar panels. Problem was, solar panels used to be very expensive and batteries not so very long-lived. It’s hard to pitch yourself as an eco-friendly technology when you’re replacing (and throwing out) a fleet of batteries every year. Not only is it hard on the image, it’s hard on the pocket book as well.

As solar panels have dropped in cost while battery lifespan has increased (and continues to), so too has the cable industry’s ability to use on-board batteries to power all sorts of electronic vehicle systems; heating and cooling included.

The timing couldn’t be better. Given the industry’s recent push into the urban market, air conditioning and heating was bound to present a problem. Without longer battery lifespans (or an entirely different technological solution), the industry could have seen their efforts severely hampered.

This feature is still a rarity amongst cable systems (not withstanding new cable car systems that tend to include third rail electricity transmission), but is one that will see increased uptake in the future.



Want more? Purchase Cable Car Confidential: The Essential Guide to Cable Cars, Urban Gondolas & Cable Propelled Transit and start learning about the world's fastest growing transportation technologies.