Results 41 to 50 of about 16,838 (222)

Research on Fault Diagnosis of HVAC Systems Based on the ReliefF-RFECV-SVM Combined Model

Actuators, 2023
A fault diagnosis method of heating, ventilation, and air conditioning (HVAC) systems based on the ReliefF-recursive feature elimination based on cross validation-support vector machine (ReliefF-RFECV-SVM) combined model is proposed to enhance the ...
Lei Nie, Rouhui Wu, Yizhu Ren, Mengying Tan   +3 more
doaj   +1 more source

Closing the Loop in Agrivoltaics: A Radiative Cooling Coating for Synergistic Self‐Cleaning and Water Harvesting

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A nanostructured photonic‐thermal coating enables radiative‐cooling‐induced condensation and water harvesting, establishing a self‐sustaining agrivoltaics microclimate loop that transforms PV panels into active climate regulators. The integration of photovoltaic (PV) panels into agricultural landscapes (i.e., agrivoltaics) offers a promising path for ...
Saichao Dang, Abdul Rahim Siddiqui, Murali Gedda, Yuxuan Huang, Shakeel Ahmad, Jehad K. El‐Demellawi, Dan Daniel, Osman M. Bakr, Stefaan De Wolf, Hussam Qasem, Husam N. Alshareef, Qiaoqiang Gan   +11 more
wiley   +1 more source

Unidades de climatización para centro de datos

Revista Vínculos, 2019
La ejecución de un proyecto de ingeniería -cuyos requerimientos y características supone el análisis exhaustivo de necesidades, entornos, riesgos de operación, normatividad, equipos e instrumentos, espacios físicos, documentación, y recursos ...
Ivan Leonardo Suarez Cruz, Andrés Escobar Díaz, Harold Vacca González   +2 more
doaj   +1 more source

Directly Sunlight‐Chargeable Core‐Shell Azobenzene Fabric via Coaxial Electrospinning with Tunable Personal Thermal Management

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work presents a leakage‐free, sunlight‐chargeable core‐shell Azo‐based textile that effectively bridges molecular photothermal storage with wearable functionality, offering a robust platform for on‐demand solar‐powered personal thermal management.
Yating Zhang, Liqi Dong, Hua Pan, Mo Zhou, Fei Zhai, Zhiping Ye, Wei Feng   +6 more
wiley   +1 more source

Forced Circulation of Nitrogen Gas for Accelerated and Eco-Friendly Cooling of Metallic Parts

Applied Sciences, 2019
As nitrogen is nonreactive and non-flammable, it can provide a quick and simple medium of cooling and environment protection. One disadvantage of nitrogen cooling is its lower heat transfer coefficient than water.
Zu Seong Park, Jeong Kim, Young Yun Woo, Habeom Lee, Ji Hoon Kim, Young Hoon Moon   +5 more
doaj   +1 more source

Characterization of cocoa butter diversity in Theobroma cacao L. in Trinidad.: implications for genetic improvement and chocolate quality

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Cocoa butter, the lipid fraction of Theobroma cacao L. seeds, is essential for chocolate quality and functionality, yet the full extent of natural variation in cocoa butter traits across cacao genetic diversity remains poorly characterized.
Evelyn Kulesza, Helene Hopfer, Gregory R. Ziegler, Pathmanathan Umaharan, Mark J. Guiltinan, Siela N. Maximova   +5 more
wiley   +1 more source

Gamma Irradiation‐Based Free Radical Grafting of N‐Hydroxyethyl Acrylamide onto Poly[(R)‐3‐hydroxybutyrate]

Macromolecular Rapid Communications, EarlyView.
This work demonstrates successful gamma‐radiation‐induced grafting of N‐hydroxyethyl acrylamide onto poly[(R)‐3‐hydroxybutyrate], producing substantial changes in material properties. Grafting generated a biphasic, less crystalline structure with enhanced thermal stability, elongation (65%), toughness (378% increase), and exceptional water uptake (610 ...
Cole Walchle, Céline Chaléat, Paul Lant, Bronwyn Laycock, Steven Pratt, Samuel Lawless   +5 more
wiley   +1 more source

Transfer Learning for the Prediction of Energy Performance of Water-Cooled Electric Chillers: Grey-Box Models Versus Deep Neural Network (DNN) Models

Energies
The development of data-driven prediction models of energy performance of HVAC equipment, such as chillers, depends on the quality and quantity of measurement data for the model training. The practical applications always struggle with the credibility of
Hongwen Dou, Radu Zmeureanu
doaj   +1 more source

Detection of Molecular High Explosives in Post‐detonation Residue: Environmental Persistence of Days to Months

Propellants, Explosives, Pyrotechnics, EarlyView.
Atmospheric flow tubemass spectrometry detects trace RDX residue in soil and dust collected days to months after large explosive detonations. Post‐detonation soil samples contain detectable RDX aligned with prevailing wind direction and generally decreasing over weeks, while dust and soil samples still show picogram‐level RDX months later, providing ...
Elizabeth H. Denis, Robert G. Ewing, Garret L. Hart, Megan K. Nims, Kelsey A. Morrison, Shannon E. Schrader, Brandy N. Gartman, Michael P. Foxe, Christine Johnson   +8 more
wiley   +1 more source

Research on a Temperature Control Device for Seawater Hydraulic Systems Based on a Natural Gas Hydrate Core Sample Pressure-Retaining and Transfer Device

Energies, 2019
In the study of natural gas hydrates, the maintenance of the low-temperature and high-pressure state of the core sample under in situ conditions is highly important for cutting, transferring, and subsequent analysis.
Peihao Zhang, Jiawang Chen, Qiaoling Gao, Bo Xiao, Xueqiao Geng, Peng Zhou   +5 more
doaj   +1 more source