The techno-economics of transmitting heat at high temperatures in insulated pipes over large distances

Applied Energy, Journal Year: 2024, Volume and Issue: 358, P. 122634 - 122634

Published: Jan. 12, 2024

This study reports a systematic techno-economic assessment of the cost-optimal transmission for air as heat transfer fluid at temperatures up to 1200 °C, scales 1 1000 MW and distances 10 km. It employs steady state analysis, with energy balances, assess effect scale, temperature insulation on losses efficiency thermal system, following by assessment. The sensitivity Levelised Cost Heat, LCOHtr, variations in operating temperature, distance, refractory thickness, ratio thickness insulation, cost any supplementary lifetime is reported. results show that LCOHtr decreases an increase expected. role much more complex, since increasing barrier increases both transmission, requiring economic optimum be determined each various conditions assessed. Parameters are also coupled because higher supplied energy/ justifies use material. For large GW scale we estimate it possible achieve minimum overall LCOHtr,min 0.16–0.36 USD/GJ/km length excluding additional location-specific costs such land-access local construction costs. These estimated sufficiently attractive justify ongoing development systems transport renewable industry from sources concentrated solar energy.

Language: Английский

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Design of reactive particle fluidized bed heat exchangers for gas–solid thermochemical energy storage

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151305 - 151305

Published: April 15, 2024

Concentrated solar power (CSP) systems integrated with a supercritical carbon dioxide (sCO2) Brayton cycle are regarded as the primary future direction for CSP technologies. Calcium-based particles can be suitable storage medium to achieve high temperatures exceeding 750 ℃. However, there have been few studies on reactive particle/sCO2 heat exchangers (HXs) drive high-performance cycles energy efficiencies. In this paper, mechanisms by which chemically release in fluidized bed (FB) exchanger has investigated evaluate performance of thermochemical systems. A 1-MWt thermal duty sCO2 working fluid operating at 988 K was designed different configurations, featuring single stage and multistage counter-flow HXs. detailed shell tube model combining chemical reaction kinetics transfer between particle FB HX design developed. comparison sensible materials shows that is advantageous due relatively short length slow mass flow rate. The rate reduced 3.5 11.5 times, respectively. average conversion 97.30 % one-stage exchanger, lower than 99.95 achieved two-stage exchanger. Additionally, sensitivity analysis carried out understand impacts key parameters process performance. These findings provide insights into operational stability efficiency system, contributing development advanced applications.

Language: Английский

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In situ growth of zeolitic imidazolate framework on expanded vermiculite to regulate the phase transition of D-mannitol for thermal energy storage and solar energy conversion

Solar Energy Materials and Solar Cells, Journal Year: 2025, Volume and Issue: 283, P. 113460 - 113460

Published: Jan. 31, 2025

Language: Английский

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Nanoadditives to mitigate jamming in cohesive granular media

Powder Technology, Journal Year: 2025, Volume and Issue: unknown, P. 120756 - 120756

Published: Feb. 1, 2025

Language: Английский

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Numerical investigation of transient flow characteristics and heat transfer in a fluidized bed particle solar receiver

International Journal of Thermal Sciences, Journal Year: 2025, Volume and Issue: 214, P. 109859 - 109859

Published: March 12, 2025

Language: Английский

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