(03-07-2023, 10:27 AM)Mav date Wrote:How green is blue hydrogen?, R.W. Howarth et al, Cornell University:Wow, that’s quite a take-down ?Do you know what steam reforming actually is?
The paper you cite assumes future hydrogen production comes by steam reforming of methane using natural gas or fossil fuels as the energy source for the process, so they allocate the total carbon emissions from the energy production and the miniscule by-product CO2 from steam reforming as a hydrogen CO2 emission, you have to be guidable to swallow that pill.
Why would any industry pay for energy if SolarPV or Solar Thermal is effective and viable, unless of course you think Solar energy is a mirage and there is a need to use a higher calorific energy source to produce hydrogen. Or unless you plan nuclear and need base load demand such as desalination or hydrogen production to draw down the surplus.
As I have stated, hydrogen production from non-renewable sources is expected to be a very very small percentage of the larger hydrogen economy, there is nothing to fear. Long term the vast bulk of hydrogen will come to market using renewable resources, it'll be a compact, energy dense, transportable source free of carbon emission.
"Ruck, ruck, ruck, ruck ....... Ruck, ruck, ruck, ruck"