Banning gas boilers

[Dan Robinson]

Yes. Charging DC batteries.

Who'd have thought?

 

[aptsys]

Yes. Charging DC batteries.

Who'd have thought?

You mean you'd expect the charging stations to have local supercapacitors suitable for reducing peak demand on the grid?

 

[durhamplumber]

Super capacitors on an AC network?

Capacitors always been fitted to correct lag and lead

 

[aptsys]

Capacitors always been fitted to correct lag and lead

They aren't supercapacitors, and they cannot be used for storage outside of one AC cycle.

 

[durhamplumber]

They aren't supercapacitors, and they cannot be used for storage outside of one AC cycle.

Oic

 

[hard-work]

But by all accounts they can increase ozone levels in the house by up to 6 times.

Sorry, I am not trying to be dismissive. I would just like to see more independent research in to the benefits of such systems vs (for example) leaving windows slightly open. And as I said earlier, it may be the case that poorly maintained systems will harm homeowners. Do such systems nag owners to clean the filters and ducting? And how are you expected to clean the ducting. Are the filters convenient to get to?

How Heat Recovery and Ventilation works - the heat from outgoing air is recovered heating ingoing air. . The ducts are not big enough for heating a whole house, just ventilation. So, many had UFH and MHRV units. But the ducts are big enough to heat a superinsulated house, by installing heater batteries in the ductwork, preferably locally controlled. Many have grease filters in the kitchen. If you want windows opened in summer then fine. If the house is designed to heat and cool itself then opening windows may upset the system. Air systems are the norm in Canada and the USA. It is not new and unproven.

 

[durhamplumber]

How Heat Recovery and Ventilation works - the heat from outgoing air is recovered heating ingoing air. . The ducts are not big enough for heating a whole house, just ventilation. So, many had UFH and MHRV units. But the ducts are big enough to heat a superinsulated house, by installing heater batteries in the ductwork, preferably locally controlled. Many have grease filters in the kitchen. If you want windows opened in summer then fine. If the house is designed to heat and cool itself then opening windows may upset the system. Air systems are the norm in Canada and the USA. It is not new and unproven.

In practise they blow cold air around in winter and people block them up

 

[Dan Robinson]

You mean you'd expect the charging stations to have local supercapacitors suitable for reducing peak demand on the grid?

It's a thing...

There's an interview somewhere with the founder of Electric Highway which was rather interesting if a bit brief.

 

[hard-work]

You mean you'd expect the charging stations to have local supercapacitors suitable for reducing peak demand on the grid?

Yep. Very big ones as well. Supercaps are used on trains for kinetic energy brake/deceleration regen. I do believe some are on the trackside in electric trains. And now used on elevators with the downward motion charging the supercaps which assist in sending the car back up.

Tesla have bought supercap company Maxwell to integrate supercaps into their battery setups. Supercap density of storage has increased a lot offering more with graphine. Then, chemical batteries may be replaced by supercaps.

 

[bernardgreen]

https://www.escomponents.com/blog/2017/9/8/batteries-versus-supercapacitors

I do believe some are on the trackside in electric trains.

Most electric trains feed regenerated power back to the traction supply and have to coast ( unpowered ) through section breaks.

The problem Network Rail have in Bath ( not permited to install overhead traction power lines for a mile or so through part of the town ) means the trains will have to be hybrid, diesel electric or ( possibly ) battery powered to get through the non electrified section. Super caps may be an option instead of diesel.

https://bathnewseum.com/2014/07/17/is-network-rail-on-the-right-track-through-bath/

 

[aptsys]

Yep. Very big ones as well. Supercaps are used on trains for kinetic energy brake/deceleration regen. I do believe some are on the trackside in electric trains. And now used on elevators with the downward motion charging the supercaps which assist in sending the car back up.

Tesla have bought supercap company Maxwell to integrate supercaps into their battery setups. Supercap density of storage has increased a lot offering more with graphine. Then, chemical batteries may be replaced by supercaps.

The energy density is unlikely to ever reach a stage where the proposal could be considered feasible. To 'spread the load' means charging outside of peak hours as we already have to buy-in most of our energy during the day. That's likely to be some several thousand cars worth of energy per forecourt which is not an insignificant piece of infrastructure both in terms of real estate, but cost, control equipment and a sizeable installation from the DNO perspective.

 

[aptsys]

It's a thing...

There's an interview somewhere with the founder of Electric Highway which was rather interesting if a bit brief.

Already a thing where electric vehicle uptake is quite low, also not a thing in the UK where our generation capacity is low

 

[hard-work]

https://www.escomponents.com/blog/2017/9/8/batteries-versus-supercapacitors

Most electric trains feed regenerated power back to the traction supply and have to coast ( unpowered ) through section breaks.

The problem Network Rail have in Bath ( not permited to install overhead traction power lines for a mile or so through part of the town ) means the trains will have to be hybrid, diesel electric or ( possibly ) battery powered to get through the non electrified section. Super caps may be an option instead of diesel.

https://bathnewseum.com/2014/07/17/is-network-rail-on-the-right-track-through-bath/

Hybrid electric/battery trains are to be trialled on Liverpool's Merseyrail later this year, on two sections, to avoid electrifying some line extensions, I do believe. The batteries are charged at the terminals of Preston and Helsby and also via the 3rd rail as the train is running down the tracks. They are also to trial hydrogen trains on a new Liverpool-Chester line via Runcorn.

 

[hard-work]

The energy density is unlikely to ever reach a stage where the proposal could be considered feasible. To 'spread the load' means charging outside of peak hours as we already have to buy-in most of our energy during the day. That's likely to be some several thousand cars worth of energy per forecourt which is not an insignificant piece of infrastructure both in terms of real estate, but cost, control equipment and a sizeable installation from the DNO perspective.

Look at a petrol station. They have massive tanks under the ground. Supercaps in charging stations will be big.