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Thermodynamics
Odumuyiwa A. Odumosu et al.
Summary: Flow boiling in microchannels utilizes the latent heat of the fluid and can efficiently remove heat. Numerical simulations provide detailed information about the flow and vapor bubble dynamics, which cannot be obtained experimentally. This study focuses on the growth of vapor bubbles in straight and wavy microchannels using numerical simulations. The results show that the wavy structure of the microchannel enhances bubble growth and wall heat transfer due to deformation, expansion, and perturbation of the bubbles. The local Nusselt number in the wavy channel can be up to 2.6 times higher than in the straight channel.
APPLIED THERMAL ENGINEERING
(2023)
Article
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Lidong Zhang et al.
Summary: This paper proposes a data-driven heat load forecast method based on smart meters, which aims to exploit the value of high spatial granularity information in residential communities with high randomness in human behaviors. The proposed method uses a white-box machine learning algorithm called Dendritic Network to analyze and aggregate data from different locations of district heating systems. An online correction mechanism is also proposed to ensure the adaptiveness of the machine learning model under different scenarios. The results show that the dendritic network employed in the proposed method achieves higher forecast accuracy with a root-mean-square error of 0.0029 and a coefficient of determination ranging from 0.99 to 1, demonstrating its wide scope of application in the area of heat load forecast.
Article
Automation & Control Systems
Lidong Zhang et al.
Summary: A plate-fin heat exchanger (PFHE) is a compact and efficient thermal device, but its performance relies on its structural design. Optimizing the design of a PFHE is a challenging problem due to its nonlinearity, which can be solved using meta-heuristic algorithms. This paper proposes an improved method called dynamic-opposite learning Jaya (DOLJaya), which demonstrates competitive robustness, efficiency, and effectiveness in solving complex nonlinear problems.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Thermodynamics
Xiaojun Shi et al.
Summary: This paper presents a numerical simulation method for flow and phase change heat transfer considering the compressibility of gas-liquid two-phase flow. It accurately predicts the flow and heat transfer characteristics, providing support for the design optimization of phase change heat dissipation system.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
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Article
Engineering, Chemical
Ksenia Velmozhina et al.
Summary: This article explores the feasibility of producing biohydrogen from microalgae after being used in wastewater purification and CO2 removal from the air. The authors investigated different methods for disrupting microalgae cell membranes and their effects on biohydrogen yield. The results showed that thermal and acid treatments resulted in the highest hydrogen production, while microwave radiation did not yield significant results. Treatment enhanced biohydrogen yield.
Article
Engineering, Chemical
Ismael A. Encinas-Vazquez et al.
Summary: High-intensity ultrasound treatment of cheese whey enhances the biosynthesis of total exopolysaccharides concentration in kefir beverage and kefir grains biomass.
Article
Engineering, Chemical
Evelyn Romero-Borbon et al.
Summary: This study established optimal conditions for thermochemical pretreatment of water hyacinth biomass to release reducing sugars, and found the most effective enzymatic complexes for hydrolysis.
Article
Engineering, Chemical
Vitor Verdelho Vieira et al.
Summary: Microalgae, as the basis for an emerging worldwide industry, are facing significant challenges in contributing to the global economy, including adapting traditional industry experiences and regulations to the microalgae sector. This work presents and discusses the main issues and boundaries impacting the microalgae sector, highlighting the need for appropriate regulations and support from governments and businesses to recognize the unique attributes and potential of microalgae.
Article
Engineering, Chemical
Sadra Mahmoudi et al.
Summary: This study investigates the influence of fluid type and bubble shape fluctuations on the drag coefficient, and evaluates the applicability of 12 drag coefficient estimation models. The results indicate that the Dijkhuizen et al. and Rodrigue correlations can effectively predict the terminal velocity of bubbles in different viscosity liquids.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Applied
Peiqi Liu et al.
Summary: Biomass pyrolysis process analysis is crucial for understanding the reaction process, predicting product distribution, and controlling the pyrolysis process. Mass spectrometry has shown unique advantages in studying biomass pyrolysis process due to its online analysis capabilities.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Doyeon Lee et al.
Summary: This review paper introduces various biomasses used in thermochemical conversion processes and analyzes the recent advances in catalytic thermochemical conversion technologies. It discusses the role of catalysts in different reactors on the major products and the catalytic reaction mechanisms during the thermochemical conversion reaction. It also reviews different types of reactors for each thermochemical process and introduces further processing technologies using biomass pyrolytic bio-oil products, as well as the related challenges and opportunities encountered in thermochemical conversion processes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Xin Huang et al.
Summary: A novel gas-liquid heat and mass transfer model for a humidifier is proposed, which can accurately predict the heat and mass transfer performance. Increasing the liquid inlet temperature has the most significant impact on improving the humidifier performance.
Article
Energy & Fuels
Chao Xiao et al.
Article
Thermodynamics
Petros K. Gkotsis et al.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2019)
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Agricultural Engineering
Hao Chen et al.
BIORESOURCE TECHNOLOGY
(2018)
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Biotechnology & Applied Microbiology
Hong Zhang et al.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2018)
Article
Thermodynamics
Hamed Eshgarf et al.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2016)
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Energy & Fuels
Gursong Yoo et al.
