Recent advances of hybrid solar - Biomass thermo-chemical conversion systems

Ling, Jester Lih Jie; Go, Eun Sol; Park, Young-Kwon; Lee, See Hoon

doi:10.1016/j.chemosphere.2021.133245

Cited by 23 publications

(3 citation statements)

References 85 publications

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“…Building a low-carbon society with the aim of reducing greenhouse gas emission is to be addressed urgently as one of the gravest societal issues [1]. Thermochemical conversion processes integrating with multiple renewable energy resources such as solar heat [2], biomass [3], and waste [4] can simultaneously solve the disadvantages of fossil fuels that cause environmental pollution and the intermittency issues of renewable energy.…”

Section: Introductionmentioning

confidence: 99%

“…Solar energy is considered one of the promising energy sources because it is sustainable and environmentally beneficial compared to other energy sources [2,5,6]. Concentrated solar power (CSP) system is a power generation method in which solar energy is collected and used directly as a heat source for the power cycle.…”

Section: Introductionmentioning

confidence: 99%

“…A fluidized bed with smooth mixing of solid particles and good heat transfer characteristics has been utilized in various thermochemical processes so far [13][14][15][16]. A fluidized bed process is being actively studied for integration with solar energy, and solid particles are used as a carrier or storage medium for heat energy [2,17]. A variety of integrated solar direct irradiation fluidized bed receivers using solid particles have been proposed, and some prototypes have been tested at the laboratory scale [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the solar thermal storage of fluidized bed materials for hybrid solar thermo-chemical processes

Seo

Ahn

et al. 2022

Biomass Conv. Bioref.

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The use of solid particles as a solar energy transport and storage medium overcomes the intermittency issues for solar energy and is advantageous for the development of a hybrid process that integrates biomass and solar thermal energy. In this study, lab-scale experimental equipment consisted of bubbling fluidized bed (55mm I.D. and 200mm height) with direct irradiated solar thermal storage was designed and constructed. Sand, alumina (Al), and silica carbide (SiC) particles with 3 different particle sizes (130µm, 250µm, and 370µm) were used as a solar thermal storage medium in the fluidized bed. Due to higher absorption and emissivity properties, the solar thermal efficiency of SiC was higher than those of sand and Al. As the gas velocities in the bubbling fluidized bed increased from the initial minimum fluidization velocity (Umf) to 2 Umf, the temperature differences between upper bed and lower bed decreased from 470 o C to 35 o C because of vigorous solid mixing and heat transfer. Also, the increase of average particle size resulted in the decrease of solid heat storage and the increase of gas heat storage due to the differences of specific surface area and gas velocity. Therefore, the energy transported and stored according to the size of silicon carbide was the highest at 370 µm, and the receiver efficiency was 21.38%.

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