Search results for: “power electronics”
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Thermodynamics: Carnot, Rankine, Brayton & beyond?
Engines convert heat into work. They are governed by thermodynamics. This note is not a 1,000 page textbook. The goal is to explain different heat engines, simply, in 13-pages, covering what we think decision makers in the energy transition should know. The theory underpins the appeal of electrification, ultra-efficient gas turbines, CHPs, nuclear HTGRs and…
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Hydrogen: overview and conclusions?
We think the best opportunities in hydrogen will be to decarbonize gas at source via blue and turquoise hydrogen, displacing ‘black hydrogen’ that currently comes from coal, and to produce small-scale feedstock on site via electrolysis for select industries. Others see green hydrogen as a cornerstone of the future energy system. We think there may…
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CO2 compression: stranger things?
CO2 is a strange gas. This matters as energy transition will require over 120 GW of compressors for 6GTpa of CCUS. This 13-page notes explains CO2’s strange properties, which helps to fine-tune appropriate risking factors for vanilla CCS, blue hydrogen, CO2-EOR, CO2 shipping, super-critical CO2 power cycles. There is also a wide moat around leading…
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Flaring reduction: screen of service and equipment companies?
This data-file is a screen of companies that can reduce routine flaring and reduce the ESG impacts of unavoidable residual flaring. The landscape is broad, ranging from large, listed and diversified oil service companies with $30bn market cap to small private analytics companies with
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CCS: amine degradation rates?
In post-combustion CCS facilities, amines react with CO2, which can later be re-released via steam-treating, and sent for sequestration. However, CCS plants have amine make-up rates, to replace amines that degrade (chemically, thermally) and evaporate off. This data-file quantifies make-up rates of amines in kg/ton.
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Offshore vessels: fuel consumption?
This database tabulates the typical fuel consumption of offshore vessels, in bpd and MWH/day. We think a typical offshore construction vessel will consume 300bpd, a typical rig consumes 200bpd, supply vessels consume 150bpd, cable-lay vessels consume 150bpd, dredging vessels consume 100bpd and medium-sized support vessels consume 50bpd. Examples are given in each category, with typical…
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Market sizing: what if CO2 abatement costs are distributed like US income?
How would CO2 abatement costs end up being distributed, if they matched the distribution of US incomes? 90% of all decarbonization would have to cost less than $80/ton. There could be 600MTpa of CCS, 60MTpa of DAC, 6MTpa of green hydrogen and e-fuels?
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Post-combustion CCS: what energy penalties?
A thermal power plant converts 35-45% of the chemical energy in coal, biomass or pellets into electrical energy. So what happens to the other 55-65%? Accessing this waste heat can mean the difference between 20% and 60% energy penalties for post-combustion CCS. This 10-page note explores how much heat can be recaptured.
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Magnets and energy: fundamental attraction?
Electric currents create magnetic fields. Moving magnets induce electric currents. These principles underpin 95% of global electricity, while 50% of wind turbines and 95% of electric vehicles use permanent magnets with Rare Earth metals. This 15-page overview of magnets explains key magnet concepts and controversies for the energy transition.
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Adiabatic flame temperature: hydrogen, methane and oil products?
At an idealized, 100% stoichiometric ratio, the adiabatic flame temperature for natural gas is 1,960ºC, hydrogen burns 300ºC hotter at 2,250ºC and oil products burn somewhere in between, at around 2,150ºC. The calculations show why hydrogen cannot always be dropped into an existing turbine or heat engine.
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