Article
Chemistry, Applied
Ruiqi Mu, Ming Liu, Junjie Yan
Summary: Supercritical water gasification (SCWG) is a promising technique to convert coal into hydrogen-rich syngas. Advanced exergy analysis shows that SCWG has a higher exergy efficiency compared to conventional (CG) and chemical looping gasification (CLG). The gasifier in SCWG process has the highest irreversibility caused by gasification reaction, but also has a high potential for avoidable exergy destruction. Additionally, parameters such as coal water slurry concentration (CWSC), gasification temperature, gasification pressure, and oxygen-coal ratio have significant effects on the performance of SCWG.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Thermodynamics
Shenghui Guo, Yu Wang, Fei Shang, Lei Yi, Yunan Chen, Bin Chen, Liejin Guo
Summary: Supercritical water gasification (SCWG) is a promising clean technology for utilizing solid fuel or waste without gaseous pollution. This paper proposes an innovative series design for heat integration in the SCWG system that considers the gasification process, which increases the overall system efficiency. The thermodynamic analysis shows significant improvements in cold gas and exergy efficiency compared to previous single-stage gasification reactors.
Article
Thermodynamics
Fan Zhang, Shuzhong Wang, Yanhui Li, Wenjing Chen, Lili Qian
Summary: A novel supercritical water system was proposed to treat sewage sludge harmlessly in this work, utilizing supercritical water gasification and oxidation. The study found that increasing treatment temperature, reducing moisture content, and oxidation coefficient could significantly improve the energy efficiency of the system.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Shenghui Guo, Changyifan Ren, Yu Wang, Shi Liu, Mingming Du, Yunan Chen, Liejin Guo
Summary: The study established an original or reference pig manure SCWG power generation plant and made various optimizations to greatly increase the overall system efficiency and power production. The efficient multi-stage heat exchanger network and steam turbine are preferred for SCWG of pig manure, considering system capacity, complexity, and zero-carbon emission.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Jia Liu, Nan Hu, Li-Wu Fan
Summary: The novel power generation system based on coal gasification in supercritical water shows great potential in meeting China's increasing energy demands. The stable and complete oxidation of hydrogen in the supercritical water oxidation reactor is crucial. Optimal design parameters for the reactor include diameter, axial length, and oxygen ratio. Analysis of enthalpy and exergy flow distributions revealed a total exergy destruction of only about 6.29%.
Article
Thermodynamics
Shenghui Guo, Fanrui Meng, Pai Peng, Jialing Xu, Hui Jin, Yunan Chen, Liejin Guo
Summary: This paper proposes an optimized direct mass transfer design for the supercritical water gasification system, which uses recycled product gas to improve energy efficiency and reduce oxygen consumption. The study shows that the optimized design has higher efficiency and significantly alters mass and energy flow.
Article
Thermodynamics
Adetunji Onigbajumo, Alireza Taghipour, Geoffrey Will, Thuy Chu Van, Sara Couperthwaite, Ted Steinberg, Thomas Rainey
Summary: The study found that increasing the SCWG gasification temperature can improve energy efficiency, carbon efficiency, and exergy efficiency, with Configuration III performing the best at suitable temperatures. By optimizing the power of the inlet water separator unit and reducing heat recovery, it is possible to increase utilizable exergy. Intrinsic exergy analysis can provide a more accurate assessment of the efficiency and performance of SCWG processes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Bingru Lu, Weizuo Wang, Cui Wang, Wenwen Wei, Hui Jin
Summary: Energy shortage and environmental pollution have led to the development of waste recycling and environment-friendly energy. A solar-driven gas-heat-electricity system was established to convert plastic waste and solar energy into electricity, heat, and hydrogen-rich gas. The analysis of the system's mass, energy, and exergy flow under typical conditions revealed the key factors affecting gasification performance, system efficiency, and energy output distribution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Weizuo Wang, Bingru Lu, Jinwen Shi, Qiuyang Zhao, Hui Jin
Summary: A new supercritical water gasification system using supercritical CO2 as medium was established in this paper, with phenolic plastics as the sample transported by CO2. The influence of temperature, pressure, gasification concentration, and transporting concentration on the system was investigated. The system with CO2 transporting was proven to reduce the loss of both energy and exergy, while the decrease in gas production yield was less than 0.1 mol/mol compared to the system with H2O transporting.
JOURNAL OF THERMAL SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Sheng Zhao, Jian Li, Chao Chen, Beibei Yan, Junyu Tao, Guanyi Chen
Summary: This study established four machine learning models to predict hydrogen production via SCWG of biomass, interpreted the inner workings of the optimal model and evaluated the performance of SCWG. The results suggested that the random forest (RF) model outperformed other models for predicting H2 yield (R2 = 0.9782).
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Xianan Xiang, Guangcai Gong, Chenhua Wang, Ninghua Cai, Xuehua Zhou, Yongsuo Li
Summary: This paper investigates the exergy efficiencies and LHV of product gas from updraft and downdraft fixed bed gasifiers, finding that the updraft fixed bed gasifier has higher exergy efficiency and the downdraft fixed bed gasifier produces gas with a higher heating value. Higher volatile content in gasification raw materials leads to higher gasification efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Haolin Liu, Chao Ye, Yuan Zhao, Guoneng Li, Yousheng Xu, Yuanjun Tang, Guanqun Luo, Qinhui Wang
Summary: A scheme of biomass gasification in a coalfired ultra-supercritical power plant is proposed and simulated using Aspen plus. The simulation results show that the coupled system has high energy and exergy efficiencies, as well as low CO2, SO2, and NOx emissions, leading to many advantages in terms of environmental performance.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Engineering, Environmental
Jialing Xu, Qing Miao, Zhiyong Peng, Shanke Liu, Yuegui Zhou, Lijun Yu
Summary: This study investigates the use of CO2 as a co-gasification agent in supercritical water gasification and provides valuable insights on designing an optimal process for syngas production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Mayra Recalde, Amogh Amladi, Vikrant Venkataraman, Theo Woudstra, Purushothaman Vellayani Aravind
Summary: The low cost of electricity in some areas has led to a trend in large-scale storage using high-temperature electrolysis plants, while supercritical water gasification (SCWG) is a promising method for syngas production. By integrating SCWG with reversible solid oxide fuel cells (rSOC), it is possible to simultaneously generate syngas or power and convert wet biomass efficiently.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Jieren Luo, Qiuhui Yan, Zhao Feng, Min Zhang, Yaxin Yang
Summary: Supercritical water gasification is a promising technology for clean and efficient utilization of carbonaceous organic materials at high temperature and pressure, with coal/biomass co-gasification being a better choice. The study found that heat transfer efficiency and CMC fraction significantly impact the energy and exergy efficiencies of the reactor, with the priority order of heat supply being lower temperature heat source, higher temperature heat source, and direct electricity heat supply method.
HIGH TEMPERATURES-HIGH PRESSURES
(2021)
Article
Thermodynamics
Zhewen Chen, Xiaosong Zhang, Sheng Li, Lin Gao
Article
Thermodynamics
Zhewen Chen, Xiaosong Zhang, Wei Han, Lin Gao, Sheng Li
Article
Energy & Fuels
Sheng Li, Xiaosong Zhang, Lin Gao, Hongguang Jin
Article
Energy & Fuels
Xiaosong Zhang, Hongguang Jin
Article
Energy & Fuels
Xiaosong Zhang, Sheng Li, Hongguang Jin
Article
Thermodynamics
Xiaosong Zhang, Wei Han, Hui Hong, Hongguang Jin
Article
Thermodynamics
Xiaosong Zhang, Sheng Li, Hui Hong, Hongguang Jin
ENERGY CONVERSION AND MANAGEMENT
(2014)
Article
Energy & Fuels
Yawen Zhao, Hui Hong, Xiaosong Zhang, Hongguang Jin
Article
Thermodynamics
Zhewen Chen, Yanjuan Wang, Xiaosong Zhang, Jinliang Xu
Article
Thermodynamics
Zhang Xiaosong, Chen Zhewen, Chen Zhenbin, Li Jinsong
Summary: This study proposed a novel energy system integrating chemical-looping hydrogen generation and solid oxide fuel cell, achieving efficient utilization of methane and higher net efficiency. The cascade utilization of waste heat and high-efficiency hydrogen production are the main reasons for the system's high performance, allowing CO2 recovery without energy penalty.
JOURNAL OF THERMAL SCIENCE
(2021)
Article
Thermodynamics
Meilong Deng, Qinwei Zhang, Yakun Huang, Xiaosong Zhang
Summary: The study found that in the new high-temperature proton exchange membrane fuel cell and pressure swing adsorption oxygen generation integrated system, the maximum net power can be achieved when the oxygen concentration is 85%. The system operates under air conditions for maximum efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Jinyi Liu, Yongkang Jiang, Xiaosong Zhang, Lirong Fu, Meilong Deng
Summary: An innovative system that integrates a high-temperature proton exchange membrane fuel cell and a pressure swing adsorption device was proposed in this study to improve the performance of a system using impure hydrogen with carbon dioxide. Simulation results confirmed the feasibility of the new system.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Zhewen Chen, Xiaosong Zhang, Lin Gao, Sheng Li
APPLIED THERMAL ENGINEERING
(2017)
Article
Thermodynamics
Wei Han, Hongguang Jin, Na Zhang, Xiaosong Zhang
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
