With much pondering my calculations (often wrong) minus losses would imply
that there is enough energy in 250ml of diesel to lift a 360 tonne block of
chocolate 1m.

Is that ball park?

On Thu, 4 Oct 2018 18:34 RussellMc <apptechnz@gmail.com> wrote:

> Concrete weights stacked to store energy and destacked to provide output.
> It works (of course) but will have difficulty being cost competitive with
> other storage technologies.
>
>
>
> https://qz.com/1355672/stacking-concrete-blocks-is-a-surprisingly-efficie=
nt-way-to-store-energy/
>
> Claimed end to end efficiency is around 85%.
> LiIon efficiency said to be around 90%. (Actual figure depends on methods
> of charge/discharge).
>
> ________________________________
>
> A "train" (or multiple units) on a track with cable connection may allow
> improved ease of charge/discharge.
> Energy storable per mass is less per distance moved due to non-vertical
> track, but can make use of long slopes.
> The excessively enthused could move 'wagons' sideways at top and bottom t=
o
> increase capacity.
>
> A single looped cable would allow multiple 'wagons' to be pulled up or to
> descend using existing chair-lift type coupling/decoupling.
>
> Masses & heights involved are "somewhat daunting"
>
> 1 kWh =3D 3,600,000 watt-seconds
> ~=3D 360,000 kg.m  (100% efficiency)  =3D eg
> 360 tonne x 1m
> 36 t x 10m
> 3.6t x 100m
> 360 kg x 100 x 10m
> 36 kg x 1000 x 10m
> ...
>
>
>
> Russell
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