[TheThirdRuffian]

The goal is not actual environmental change.

It’s economic warfare based on bad science.

[vikzilla]

The critical point of water occurs at 374C at a pressure of 22.1 MPa (3,208 psi), where liquid water and steam become indistinguishable. Above that point (Super Critical and USC), the water does not need to boil to produce steam. So, not only do you need less coal to make that steam, you now also have a saving in water use as well, as it does

In other words, You pump for pressure and fire for steam temps. Yes, it is more efficient. I would take exception with the saves water statement. even the older tech. recylces the existing water from condenser to feedwater to boiler to turbine and back to condenser. USC water passes through one time but i'm sure not discarded because it must be treated to remove disolved solids that would destroy turbine blading at these pressures. very expensive to treat that much water to those levels of cleanliness, no reason to discard the water under either format. There are many super-critical plants out there

[vikzilla]

Nuclear power plants typically have generators capable of driving huge generators capable of 1000MW+. They can do this because the nuclear process can make huge amounts of steam to drive a huge multi stage turbine, a lot larger than for a large scale coal fired unit. If you were to connect one of those 1000MW+ generators to a 70s’ technology coal fired unit, it would not even turn, because they could not make the steam to drive the turbine to spin the weight of that rotor.

I'll throuh the BS flag on that i'm afraid. Coal-fired UnitsI'm familiar with ran at much higher pressures than the nuke up river could. 2420 Throttle pressure and 1005 degree steam spinning generator at 3600 rpm for 60cycle power. nuke was 1000 throttle pressure and 850 steam temp spinning gen at 1800 rpm for 60 cyles, nuke gen had 4 poles while coal-fired had 2poles When the nuke guys came to visit they were always amazed at the raw power of the facilitymuch greater than they were used to. Clean coal tech works very well. amazing things can be done. May Man-Bear-Pig rot in hell for what hes brought the people. All about self enrichment and not a lick about actual science.

[JimRed]

Upgrade coal power and cut 15% of emissions. Where is the Green applause?

The Green movement is about weakening America, not about protecting the environment.