Exergy and exergoeconomic analysis of hydrogen and power cogeneration using an HTR plant

Norouzi, Nima; Talebi, Saeed; Fani, Maryam; Khajehpour, Hossein

doi:10.1016/j.net.2021.02.027

Cited by 9 publications

(1 citation statement)

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“…Fusion, produces temperatures of about 100 million degrees Kelvin, and is considered energy's holy grail [37] . Its efficiency in energy storage and auxiliary heater modes is between 85.07% and 89.1% respectively [38] . And used to produce hydrogen (H2) its efficiency increases to 94.15% and 92.05% in the same modes.…”

Section: Waste Heatmentioning

confidence: 99%

Global warming, a global energy resource

Baird

2024

Therm. Sci. Eng.

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Global warming is a thermodynamics problem. When excess heat is added to the climate system, the land warms more quickly than the oceans due to the land’s reduced heat capacity. The oceans have a greater heat capacity because of its higher specific heat and the heat mixing in the upper layer of the ocean. Thermodynamic Geoengineering (TG) is a global cooling method which deployed at scale would generate 1.6 times the world’s current supply of primary energy and remove carbon dioxide (CO2) from the atmosphere. The cooling would mirror the ostensible 2008–2013 global warming hiatus. At scale 31,000 1-gigawatt (GW) ocean thermal energy conversion (OTEC) plants are estimated to be able to: a) displace about 0.8 watts per square meter (W/m2) of average global surface heat from the surface of the ocean to deep water that could be recycled in 226-year cycles, b) produce 31 terawatts (TW) (relative to 2019 global use of 19.2 TW and c) absorb about 4.3 Gt CO2 per year from the atmosphere by cooling the surface. The estimated cost of these plants is $2.1 trillion per year or 30 years to ramp up to 31,000 plants which are replaced as needed thereafter. Compared for example to the cost of world oil consumption that in 2019 was $2.3 trillion for 11.6 TW. The cost of the energy generated is estimated at $0.008/KWh.

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Section: Waste Heatmentioning

confidence: 99%