CO&lt;sub&gt;2&lt;/sub&gt; Pipeline Design: A Review

Rahmanian, Nejat; Mujtaba, Iqbal M.; Peletiri, Suoton Philip

doi:10.20944/preprints201806.0421.v1

Cited by 1 publication

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“…where _ m inj=prod=reinj is the mass flowrate of CO 2 in injection, production, and re-injection wells in unite of kg/s, D well is the well diameter, ρ and v are CO 2 density and velocity, in units of kg$m -3 and m$s -1 respectively. Given that the maximum CO 2 in the wellbore velocity of 3 m$s -1 based on the previous experiment conducted for CO 2 flowing through pipelines [33,34] and derived from Eq. (9), D well can be expressed as a function of the mass flowrate as Eq.…”

Section: Economic and Optimization Analysesmentioning

confidence: 99%

Thermo-economic analysis of a direct supercritical CO2 electric power generation system using geothermal heat

et al. 2021

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A comprehensive thermo-economic model combining a geothermal heat mining system and a direct supercritical CO 2 turbine expansion electric power generation system was proposed in this paper. Assisted by this integrated model, thermo-economic and optimization analyses for the key design parameters of the whole system including the geothermal well pattern and operational conditions were performed to obtain a minimal levelized cost of electricity (LCOE). Specifically, in geothermal heat extraction simulation, an integrated wellbore-reservoir system model (T2Well/ECO2N) was used to generate a database for creating a fast, predictive, and compatible geothermal heat mining model by employing a response surface methodology. A parametric study was conducted to demonstrate the impact of turbine discharge pressure, injection and production well distance, CO 2 injection flowrate, CO 2 injection temperature, and monitored production well bottom pressure on LCOE, system thermal efficiency, and capital cost. It was found that for a 100 MW e power plant, a minimal LCOE of $0.177/kWh was achieved for a 20-year steady operation without considering CO 2 sequestration credit. In addition, when CO 2 sequestration credit is $1.00/t, an LCOE breakeven point compared to a conventional geothermal power plant is achieved and a breakpoint for generating electric power generation at no cost was achieved for a sequestration credit of $2.05/t.

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Section: Economic and Optimization Analysesmentioning

confidence: 99%