HSTEd
Veteran Member
- Joined
- 14 Jul 2011
- Messages
- 20,348
and then in another few years, put it all back again. leave it alone.
So it must remain a double track but poorly signalled, slow and diesel operated anachronism in an increasingly streamlined and intensively operated network, as a hedge against some faint possibility that it will be needed again?
That sounds like a false benefit to me really.
Twice the weight of biomass in needed to give the same calorific value as coal and because less dense than coal three times the volume so there will be at least twice as many trains of biomass as coal over the S&C. Say, 90 each way per day or four trains an hour day and night. Who said it would need to be singled. It would need resignalling with four aspect signals and 5 minute headways.
Except there has been little to no Biomass capacity built in recent times. Co-firing biomass doesn't really get you out of the Large Combustion Plant directive restrictions on operating hours - it just allows you to tap into a giant subsidy pot. The few coal plants that escape closure under the LCP tend to be closer to the sea and are unlikely to need ot ship coal over the S&C.
Now that nuclear has been destroyed by political interference and privatisation I am afraid the future is gas fired.
Also any large scale new biomass burner is likely to be built at a coastal or near coastal site, with the imported material delivered directly to the storage silos from the ship. Only the overhang of converted generation capacity prevents this from occuring now (which was largely laid in in a previous era when coal was moved twenty miles from the pit to the furnace).
See Kingsnorth as an example.
Except there is no reason for this biomass to be shipped via this route once the new generators are brought on line with their dedicated unloading piers.More would have to travel through the night as the limiting factor is the intensity of passenger trains in the Aire Valley. 43 per day is about the maximum that can run east of Skipton.
Electricity is a hell of a lot cheaper to move over these very short (comparitively) distances than biomass is.
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