Solar alternative to the West

Solar alternative for the West

Author: David Judbarovski, systems engineering, principle inventor, retired

judbarovski@gmail.com

 

Abstract

To be competitive, the solar electricity has to be cheaper USD 0.01/kWh or so. (see “Way to rehab solar power fiasco”, posted by me on 14.10.2020 in https://judbarovski.blogspot.com/2020/10 with a foreword: “Thermal heterodyne feasibility and evaluation” posted by me at the same site linked, on10.10.2020).. That goal is feasible and I can show it for Denmark conditions, as an example.  

 

Solar electro-thermal power plant of my design, it is original solar concentrating system with thermal heterodyne in focal spot being motionless and serving to convert high temperature heat in electricity with energy efficiency about 67%, while mechanical part of the concentrator is about USD 15.0/kWp. It is Antenna source of electricity being rectenna with rectifiers about 2.5 THz or so.

 

For Denmark weather conditions, I suppose 7 months (since April to October) in a years as operational time, with 12 hours daily of light with cloudiness 50%, it is orthogonal insolation

12 h * 200 d * 0.5 = 1200 kWh/m2. Supposing Rectenna to be some times more expensive than PV cell and to be USD 1.0/W and concentration ratio 100 : 1, it is USD 10/ kW. Being summarized, it is (15 $ + 10$) / (1200 kWh * 5 years payback) / 0.67 efficiency = 0.6 cents/ kWh electricity.  

 

No any Smart Grids and very problematic and costly storage for solar electricity. It is delivered to consumer in non-stop regime, and supported by artificial hydrocarbons can be stored in reliable reserve and produced by excess solar electricity by a ratio 50% direct solar and 50% by the said hydrocarbons, is transformed in hydrogen  and then in electricity by H2-air FC.  

 

It is a following technology:

H2O is split in H2 by concentrated rays of magnetrons. 50 kWh = 50 * (0.6 cent + 0.2 CAPEX) = 40 cents per kg H2 product, or USD 400.0/ton H2

CO2 + H2  = CO + H2O

CO + 2 H2 = (CH2) + H2O.  They are exothermic reactions

CO2 can be cheaply mass produced by USD 10.0 /ton in quantity 320 ton/m2 by relatively small water pond near solar plant (see “Mass production of CO2 at attractive cost from the air”, posted by me at 11.2.2020 in https://judbarovski.blogspot.com/2020/02 )

So (CH2) is (44 * 10 + 6 * 400 )/14 = USD 200.0 = USD 30.0/bbl OPEX + CAPEX, and totally about 55.0/bbl = USD 385.0/ton (CH2)

(CH2) + 2 H2O = CO2(g)  + 3 H2 – 210 kJ

CO2(g) = CO2 (s)  - 80 kJ to prevent H2-air FC poisoning by CO2

They are endothermic reactions consuming 290 kJ energy totally, or 0.6 * 290/3600 = 0.048  cents/ mol = USD 34/ton (CH2) additionally, or 385 + 34 = USD 420.0/ton (CH2) totally.  

.3 H2 + air = 3 H2O + 6 * 40 kWh * 0.67 = 160 kWh electricity, or 160,000 kWh consuming 14 * 430 $/ton = 6000 $ (CH2), or 3.7 cent/kWh, before payback

 

Hence, a cost for stationary consumers is 0.6 * 0.50 + 3.7 * 0.5 = 2.15 cents/kWh electricity, and 3.7 cent/kWh for mobile ones.

 

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