Biochar mitigates greenhouse gas emissions from bulk soil in wheat-corn rotation system by inhibiting biochemical decomposition

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 386, P. 109600 - 109600

Published: March 10, 2025

Language: Английский

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Design and performance evaluation of sunflower straw biochar–based photothermal hydrophobic wood

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 228, P. 120865 - 120865

Published: March 20, 2025

Language: Английский

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Achieving efficient freshwater generation and triboelectric collection based on an integrated device empowered by solar and wave energy

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116619 - 116619

Published: April 1, 2025

Language: Английский

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An Experimental Study on Blade Surface De-Icing Characteristics for Wind Turbines in Rime Ice Condition by Electro-Thermal Heating

Coatings, Journal Year: 2024, Volume and Issue: 14(1), P. 94 - 94

Published: Jan. 10, 2024

Wind turbines in cold and humid regions face significant icing challenges. Heating is considered an efficient strategy to prevent ice accretion over the turbine’s blade surface. An protection system required minimize freezing of runback water at back melting state on blade; law re-freezing necessary for design wind turbine de-icing systems. In this paper, a tunnel test was conducted investigate process static heated under various rime conditions. Ice shapes different thicknesses were obtained by spraying 5 m/s, 10 15 m/s. The spray turned off heating fluxes applied heat blade. total energy consumption explored. When occurred short time, layer became thin, flowed out (pattern I). With increase time low speed, induced dominant action inertial force moved backward due reduction adhesion between surface II). As speed increased, it exhibited states, including refreezing trailing edge III) shedding IV). decreased as flux increased shortened. At when q = 14 kW/m2, EA tδ 1 min, 7 min 0.33 kJ, 0.55 0.61 respectively. 3 0.77 0.81 0.80 Excessive flow density risk return freezing; thus, reference m/s kW/m2 12 This paper provides effective de-icing.

Language: Английский

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An Experimental Study of Surface Icing Characteristics on Blade Airfoil for Offshore Wind Turbines: Effects of Chord Length and Angle of Attack

Coatings, Journal Year: 2024, Volume and Issue: 14(5), P. 623 - 623

Published: May 15, 2024

Offshore wind turbines operating in frigid and humid climates may encounter icing on the blade surface. This phenomenon adversely impacts aerodynamic efficiency of turbine, consequently diminishing power generation efficacy. Investigating distribution characteristics surface is imperative. Hence, this study undertook tunnel tests segments DU25 airfoil, a prevalent type for offshore turbines, to examine such as different chord lengths angles attack. The results show simultaneous increase area growth rate net with augmenting length total decreases by factor two when doubled. relative positioning average thickness remain consistent across airfoil blades varying lengths. Comparing shapes scales shows similarity ranging from 84.06% 88.72%. provide insight into turbines.

Language: Английский

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Profiling the Morphology Effects of MoS₂ Nanomaterials on Ice Suppression and Rapid Rewarming for Cryopreservation

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 12783 - 12794

Published: May 22, 2024

With the booming development of nanotechnology, an increasing number nanomaterials and engineering strategies are being used to explore effective inhibition ice crystals, thereby reducing damage biological samples improving efficiency cryopreservation. However, ice-inhibiting effect nanomaterial shapes their corresponding photothermal behavior have rarely been studied in depth cell cryopreservation applications. Here, molybdenum disulfide (MoS2) with different morphologies [nanosheets (NSs), nanoflowers (FLs), nanomicrospheres (MSs)] were controllably synthesized by a hydrothermal method profile influence MoS2 morphology on suppression rapid rewarming. The prepared exhibited excellent capabilities for regulating nucleation temperature recrystallization size which varied (MSs > FLs NSs). Unique surface morphology, more functional groups that could form hydrogen bonds ice/water molecules, adsorption-inhibition mechanism contributed regulation performance. Surprisingly, MSs was also best as sharply rise from 24 82 °C under 808 nm laser irradiation 1 min. Finally, using cryoprotectant (CPA) cryopreserve A549 cells, survival rate 85.3% still achieved even when replaced 90% dimethyl sulfoxide CPA solution. Our work is first correlate shape variations crystal during freezing-thawing process properties, synergistically This study provides guidance practical design collaborative deicing.

Language: Английский

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Preparation of n-Tetradecane Phase Change Microencapsulated Polyurethane Coating and Experiment on Anti-Icing Performance for Wind Turbine Blades

Coatings, Journal Year: 2024, Volume and Issue: 14(5), P. 645 - 645

Published: May 19, 2024

Icing is a common physical phenomenon, and the icing of wind turbine blades can significantly affect performance turbines. Therefore, researching methods to prevent great significance, coating method anti-icing an effective way delay icing, with advantages such as low energy consumption easy implementation. In this study, using background, tetradecane phase change microcapsules were prepared, melting enthalpy 90.8 J/g crystallization 96.3 J/g, exhibiting good coverage storage efficiency. After mixing (PCMS) polyurethane (PUR) them on blades, after 5 min tunnel test, could blade surface, highest rate reaching 60.41%. This indicates that has effect provides basic research data for exploring new methods.

Language: Английский

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Study of Anti/De-icing Performance Based on Biochar Superhydrophobic Coating/Graphene Coupling Assembly

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: unknown, P. 105638 - 105638

Published: Dec. 1, 2024

Language: Английский

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