Enhancing the solar energy conversion and harvesting characteristics of multiwalled carbon nanotubes‐modified 1‐hexyl‐3‐methyl‐imidazolium cation ionic liquids

Boldoo, Tsogtbilegt; Lee, Minjung; Cho, Honghyun

doi:10.1002/er.7763

Cited by 13 publications

(2 citation statements)

References 71 publications

(110 reference statements)

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“…Therefore, the direct absorption solar thermal collecting method has the advantage that heat loss could be minimized, and solar thermal conversion efficiency is high [11]. However, some studies have been carried out through the dispersion of plasmonic [12][13][14][15][16][17], metal oxide [18][19][20][21][22], and nonmetallic NPs (nanoparticles) [23][24][25][26][27][28][29] for the direct absorption solar thermal collecting method because working fluids, such as water, antifreeze, and oil, generally used in the solar collector [30], possess large optical transmittance. The beneficial aspect of using NF for the direct absorption solar thermal collecting method is that it can improve both the heat transfer performance of the working fluid and the optical absorption performance [31,32].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Thermal Performance Influence on Design Parameter and Fe3O4 Nanofluid of Flat Plate Direct Absorption Solar Collector

Tong

Ham

Cho

2023

International Journal of Energy Research

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In this study, the influence of design factors (concentration of Fe3O4 nanofluid (NF), mass flow rate, FPDASC height, and emissivity of the receiver) of flat plate direct absorption solar collector (FPDASC) using Fe3O4 NF was investigated using the CFD (computational fluid dynamics) method. As a result, when the concentration of Fe3O4 NF increases up to 0.1 wt%, the thermal and exergy efficiencies increase by 0.773 and 0.0293, respectively, due to the increased optical absorbance. Increasing the mass flow rate of Fe3O4, NF decreases the outlet temperature; however, thermal efficiency increases due to reduced heat loss and improved heat transfer. Moreover, there is little effect on the irreversibility of the FPDASC due to the Bejan number with almost one, although the mass flow rate increases the pressure loss. The increasing height of the FPDASC and the emissivity of the receiver improve the thermal and exergy efficiencies in the case of water with low optical absorbance. In contrast, the increasing height of the FPDASC and the emissivity of the receiver decrease the thermal and exergy efficiencies when the optical absorbance is high (0.1 wt% Fe3O4 NF).

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Section: Introductionmentioning

confidence: 99%

Numerical Study of Thermal Performance Influence on Design Parameter and Fe3O4 Nanofluid of Flat Plate Direct Absorption Solar Collector

Tong

Ham

Cho

2023

International Journal of Energy Research

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“…Ionic liquids are formed by an organic cation and an organic or inorganic anion presenting as molten salts, many of which are liquid at room temperature. 16 They possess several excellent properties including negligibly low vapor pressures, 17 electrochemical stability, chemical stability, 18 thermal stability, high ionic conductivity, 19 low flammability, 20 and excellent lubricity, 21 which promotes the application of them in various energy fields such as fuel cells, 22 solar cells, 23 batteries, 24 and energy storage. 25 As the most promising compression solution, in the ionic liquid compressor, the solid piston of the reciprocating compressor is substituted by the ionic liquid piston and driven by the hydraulic system.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

Guo

Wang

Liu³

et al. 2022

Intl J of Energy Research

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Summary The ionic liquid compressor is regarded as the most promising compression technology for the hydrogen refuelling station due to the combined application of ionic liquid and the hydraulic driving system. However, the design, mathematical and experimental investigations of the ionic compressor are still absent from the open literature. This paper proposed a new structure design and the design methodology of the ionic liquid compressor. The mathematical modelling considering the valve dynamics was provided for simulating the thermodynamic process, which was verified by the experimental data. The results showed that the delayed closing of the discharge valve would take place due to a high or low stiffness of the valve. The increase in the stiffness alleviated the rebound issue of the suction valve. An increase in the stroke to diameter ratio could solve the rebound issue of the discharge valve. A low or high trajectory coefficient would cause an intense rebound during the closing procedure of the discharge valve. The designed results of the main parameters of the compressor based on the simulation were the suction valve stiffness of 100 N/m, the discharge valve stiffness of 500 N/m, the stroke to diameter ratio of 1.0, and the trajectory coefficient of 0.125 under the given design condition.

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A review of imidazolium ionic liquid-based phase change materials for low and medium temperatures thermal energy storage and their applications

Li¹,

Wang²,

Zhou³

et al. 2023

Green Energy and Resources

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Enhancing the solar energy conversion and harvesting characteristics of multiwalled carbon nanotubes‐modified 1‐hexyl‐3‐methyl‐imidazolium cation ionic liquids

Cited by 13 publications

References 71 publications

Numerical Study of Thermal Performance Influence on Design Parameter and Fe3O4 Nanofluid of Flat Plate Direct Absorption Solar Collector

Numerical Study of Thermal Performance Influence on Design Parameter and Fe3O4 Nanofluid of Flat Plate Direct Absorption Solar Collector

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

A review of imidazolium ionic liquid-based phase change materials for low and medium temperatures thermal energy storage and their applications

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