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Elevating the Photothermal Conversion Efficiency of Phase …
These devised CNT@PCMs cleverly combine the photothermal conversion capability of CNTs and the thermal energy storage capability of traditional PCMs.
Photothermal Nanomaterials: A Powerful Light-to-Heat …
The investigation of photothermal materials with broadband absorption is beneficial for the utilization of renewable solar energy, while the engineering of materials with efficient heat generation …
Ternary mixture thermochromic microcapsules for visible light absorption and photothermal conversion energy storage …
Due to the excellent photothermal conversion characteristics of PPy, phase change microcapsules containing only 1.91 wt% PPy exhibit high phase change enthalpy and efficient photothermal storage efficiency. Li [16] prepared phase change microcapsules with
Synthesized acrylate monomers to improve photothermal conversion efficiency …
The reinforced photothermal effect of conjugated dye/graphene oxide-based phase change materials: fluorescence resonance energy transfer and applications in solar-thermal energy storage Chem. Eng. J., 428 ( 2022 ), Article 130605
Photothermal Conversion
6.1 Principles. Photothermal conversion of solar energy, to produce hot fluid or hot air, takes place in solar collectors. Efficient conversion requires that a solar-absorbing surface is in thermal contact with the fluid or gas, and that thermal losses to the environment are minimized. The absorber should be positioned under a transparent cover ...
Investigating efficient photothermal conversion towards CO2 …
Equation (4) expresses the process of CO 2 to CH 3 OH as follows: (4) CO 2 ( g) + 3 H 2 ( g) → C H 3 OH ( l) + H 2 O ( g) Δ H = - 49.5 k J / m o l. From the equation presented, we can observe that the transformation of CO 2 into CH 3 OH involves a reduction in gas volume and is classified as an exothermic reaction.
An efficient photothermal conversion material based on D-A type …
Solar energy is the most promising renewable energy among many water evaporation and desalination technologies. [] ... Indeed, the photothermal efficiency of TPP-2IND powder was evaluated upon 660 nm laser irradiation (0.9 …
A Review on Photothermal Conversion of Solar Energy with …
2 Basic Mechanisms of Solar-Driven Photothermal Conversions Conversion of solar energy into other forms of energy is urgently needed to address the global energy issues. [63, 64] It can be realized by different conversion processes, such as PV effect, [4, 65-67] photochemical transformation, [68-70] photoelectrochemical process, …
Functionally constructed mineral microspheres for efficient photothermal conversion and thermal energy storage …
To ensure the thermal comfort of the occupants with a minimum system energy demand, a highly energy-efficient building must have an energy-efficient enclosure structure [14]. Therefore, PCMs can be incorporated into the wall panels, floors, ceilings, and other facilities to reduce internal temperature fluctuations and regulate the …
Photothermal materials: A key platform enabling highly efficient water evaporation driven by solar energy …
Different categories of photothermal materials are introduced. • Mechanisms of light to heat energy conversion over photothermal materials are presented. • Applications of photothermal materials in solar-steam generation were reviewed. • …
Quantifying the photothermal conversion efficiency of plasmonic …
To evaluate the photothermal conversion efficiency η of the GNR dispersions, the rate of energy absorption A and the rate of heat dissipation B were extracted by fitting the experimental temperature transients with Eq.
Photothermal Energy-Storage Capsule with Sustainable Evaporation for Efficient …
Herein, a photothermal energy-storage capsule (PESC) by leveraging both the solar-to-thermal conversion and energy-storage capability is proposed for efficient anti-/deicing. Under illumination, the surface temperature can rise to 55 °C, which endows fast droplet evaporation to prevent the subsequent bulk freezing, and the accumulated ice and frost in …
Emerging urchin-like core-shell mineral microspheres with efficient photothermal conversion and solar energy storage …
The synergistic effect of the core-shell structure makes paraffin-SCGT (P-SCGT) composites possess a high photothermal conversion efficiency of 94 % and outstanding heat energy storage capacity, with the melting and crystallization enthalpy of …
Photothermal conversion property studies of …
3 · Photothermal conversion is one of the key technologies in solar energy collection, seawater desalination, photothermal treatment and other important fields. In order to develop next generation photothermal materials, four polyoxometalates, [(CH 3) …
A study on novel dual-functional photothermal material for high …
The following formula was used to calculate the photothermal storage efficiency: (7) η = m (Δ H + Q) I S (t e − t s) × 100 % where m is the mass of PCB-20, ∆H and Q are the latent and sensible heats of PCB-20 respectively.
A general methodology to measure the light-to-heat conversion …
As a fundamental property of materials, accurate measurement of light-to-heat conversion efficiency (LHCE) is of vital importance in developing advanced materials for photothermal applications.
A novel phase change materials used for direct photothermal conversion and efficient thermal storage …
Hence, combining the heat transfer process of NPT-PCMs1 block under solar irradiation (Fig. 12) and the existing calculation methods of energy conversion efficiency (Table 4), the intrinsic photothermal conversion efficiency (η P) …
High-directional thermally conductive stearic acid/expanded graphite
This strategic combination culminates in the creation of a highly efficient integrated photothermal storage device, markedly boosting the overall efficiency of photothermal energy integration. This innovative design offers a practical and scalable solution for high-capacity and high-intensity solar thermal energy storage.
A Review on Photothermal Conversion of Solar …
In this review, we comprehensively summarized the state-of-the-art photothermal applications for solar energy conversion, including photothermal water evaporation and desalination, photothermal …
Preparation and characterization of highly efficient photothermal …
The photothermal conversion and energy storage efficiency reached 93.4 % when the addition amount of F3 is 1.0 wt%. The prepared composite PCM can meet the practical application in the field of solar photothermal conversion.
A modified method to quantify the photo-thermal conversion …
The photo-thermal conversion efficiency is determined as 23.4%. As shown in Fig. 9 d, the efficiency of the samples calculated by the modified method is lower than 25%, which is much lower than that determined by the traditional method.
Superhydrophobic multi-shell hollow microsphere confined phase change materials for solar photothermal conversion and energy storage …
4 · The development of efficient solar photothermal conversion and energy storage composite (SPCSC) is of great significance in solving the imbalance between supply and demand of solar energy utilization in time …
An ultrastrong wood-based phase change material for efficient photothermal conversion and thermal energy …
By using the photothermal conversion formula, the photothermal conversion efficiency of p-thermowood-6K and thermowood-6K was calculated to be 83.2 % and 24.6 %, respectively. After adding TA/Fe 3+, the photothermal conversion efficiency of p-thermowood-6K was about three times higher than that of thermowood …
Calculation of the photothermal conversion efficiency
Calculation of the photothermal conversion efficiency. Where h is the heat transfer coefficient, S is the surface area of the container, and the value of hS is obtained from the Eq.4 and Figure 3b. The maximum steady temperature (Tmax) of the solution of the Cys-CuS NPs was 40.1 oC and environmental temperature (TSurr ) was 18.6 oC.
Phase change nanocapsules incorporated with nanodiamonds for efficient photothermal energy conversion and storage …
ND was firstly incorporated into NEPCM for efficient solar energy utilization. • The phase change nanocapsules exhibit a high thermal conductivity of 0.747 W/m·K. • The nanocapsules present exceptional latent heat and leak-proof performance. • The photothermal
Optimization of supercooling, thermal conductivity, photothermal …
According to Equation (2), the photothermal storage efficiency of SAT-S-2MWCNTs-1.5GNPs was calculated to be 89.3%, which is higher than that of previous studies. Specifically, Liu et al. [ 14 ] and Xiao et al. [ 15 ] presented that the photothermal storage efficiency of SAT only can be increased to 80.2% and 87.1% when biomass …
Sustainable Porous Scaffolds with Retained Lignin as An Effective Light‐absorbing Material for Efficient Photothermal Energy …
As a result, the photothermal energy storage efficiency of POW-B/PEG and POW-S/PEG are ≈ 86.7% and 79.8% (Figure 4c), ... Hence, the semi-quantitative analysis was further performed to calculate the amount of each sub-structure and sub-units in …
Synergistic enhancement of photothermal energy storage …
Efforts are being made to promote energy transition, enhance energy utilization efficiency and replace non-renewable energy with sustainable alternatives [1, 2]. Solar energy has gained widespread attention thanks to its continuous energy supply and environmentally friendly characteristics.
Efficient photothermal conversion of Fe2O3–RGO guided from ultrafast quenching effect of photoexcited state …
Improving the nonradiative transition rate of photoexcited electrons is important to enhance the photothermal conversion efficiency and develop efficient solar thermal utilization. Herein, we designed a new kind of light absorption-enhanced and efficient photothermal conversion material, namely, Fe 2 O 3 -functionalized reduced …
Phase Change Energy Storage Material with …
The CCNT layer provided excellent photothermal conversion and self-cleaning properties. The experimental results show that the latent heat of the PCM can reach 124.2 J/g, the water contact angle is …
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