"The generating head is from the top of the storage at the surface, to the generator, period. It only varies by the variation in the stored head."
I have got that - where are we placing the generator?
the inference was in previous posts that because the superpit was 600 m deep - then we had lots of head - which is BS
the head is exactly as you state.
However if - as was inferred - that we could have 600 m of head - then the generator would have to be at the bottom -
does that make sense?
Which means that as the used water level rose - the free flow from the generator would be coming up against back pressure - does that make sense?
If it doesn't make sense - that' because the systems don't work that way - they work exactly like you said.
Which means that in a cone shaped 600 m deep hole - you cannot get the full capacity of your multi kilometer long hole.
I fully understand you only need about 6 to 20 odd hours of generation cycle to make them work - what I am saying is that - that could only ever be a tiny system.
And, more than that - I seriously doubt the economics of it - no one would touch that with a barge pole --
you work it out ------------ would you build it and expect to make a profit?
I say again - if there was money in it - Hydro Tas would have already done it - they have the most renewable power system in the Nation - they have excess wind power sometimes - they have a cable they can sell excess - if they had more excess they could sell it in a doddle - they already have much of the big capital expense done -
but, they think it's a no go ------------ even when the bloody state was about to collapse and will do again - it 'does NOT stack up'
am I making sense?
still want to know if you are using a pumped system or not ----------- I looked at it myself - it was certainly a no go at my place - and, I have a lot of the infrastructure already in place.
