Article
Green & Sustainable Science & Technology
Musa D. Aliyu, Rosalind A. Archer
Summary: This paper presents a new three-dimensional numerical model of a hot dry rock geothermal reservoir and analyzes two case studies to determine the impact of different factors on reservoir performance, showing that wellbore placement significantly affects reservoir performance.
Article
Green & Sustainable Science & Technology
Chenchen Feng, Huaijiu Wang, Zefeng Jing
Summary: A physical model of thermal storage using CO2 as working medium is built based on geological conditions in China, studying the effects of injection parameters, thermal storage properties, and perforation position on seepage and heat characteristics. Quantitative results show that factors like injection pressure and flow rate influence heat extraction, with permeability distribution and perforation position affecting thermal storage life. Consistent permeability variation along depth is beneficial for HDR development, providing insights for future geothermal system construction.
Article
Chemistry, Physical
Mustafa Kaan Baltacioglu, Huseyin Yagli, Ceyhun Baydar, Yasin Erdog
Summary: Researchers have explored the generation of electricity from HDRs using Organic Rankine cycles, providing a new pathway for countries with geothermal power, such as Turkey, to obtain green hydrogen. By utilizing the heat from HDRs and injecting water, the potential amount of electricity that can be produced through a single shaft binary organic Rankine cycle was calculated. Furthermore, the study revealed the possibility of hydrogen production through water hydrolysis using electricity generated from renewable energy sources, which can be directly supplied to natural gas lines or used for storage and industrial purposes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Wenbo Huang, Juanwen Chen, Jiwen Cen, Wenjiong Cao, Zhibin Li, Feng Li, Fangming Jiang
Summary: The study investigates the performance of a novel technical scheme for extracting hot dry rock energy using a super-long gravity heat pipe in a single-well. Through a sensitivity analysis, it is found that increasing the heat pipe diameter and lowering the condensation temperature significantly enhance the thermal performance, while thermal insulation and the low thermal conductivity of hot dry rock act as key bottlenecks in the system's performance.
Article
Energy & Fuels
Yunxing Lu, Minsu Cha
Summary: This laboratory study investigates the behavior of thermal shock stimulation and temperature propagation in EGS wells. The research finds that thermal loading enhances permeability and induces macro/microcracks in the reservoirs. Additionally, the study reveals the changes in thermal gradients near and away from the borehole during water flow.
Review
Energy & Fuels
Rafal Moska, Krzysztof Labus, Piotr Kasza, Agnieszka Moska
Summary: The beginning of 2022 witnessed major changes in energy availability and security in Europe, with Russia's aggression against Ukraine causing instability in the European energy economy and the ongoing transition away from fossil fuels. This has led to a focus on introducing new energy technologies based on renewable sources, such as geothermal energy. Geothermal energy, specifically enhanced geothermal systems (EGS) in hot dry rocks (HDR), is considered a promising and stable source of renewable energy. However, the high investment costs associated with hydraulic fracturing, needed due to the low permeability of these deposits, pose a challenge. This review explores the potential HDR areas in the southeastern Baltic basin countries, highlighting the need for further research and addressing barriers to EGS expansion.
Article
Computer Science, Interdisciplinary Applications
Yulong Liu, Zixu Hu, Tianfu Xu, Bo Feng, Yilong Yuan, Pengju Xing
Summary: A seismic-fracturing model with a discrete fracture network (DFN) was developed to study how to increase stimulated reservoir volume (SRV) while reducing seismic risks at the FORGE site in Utah. The study found that the fluid channeling effect between each segment is the main reason for uneven fracture growth in horizontal wells. To solve these problems, a novel hydraulic fracturing method with a differentiated-stage, variable-injection volume suitable for multi-fracturing of horizontal wells in hot dry rock (HDR) was proposed.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Environmental
Sigurdur John Einarsson, Lingxue Guan, Lee Nuang Sim, Tzyy Haur Chong, Bing Wu
Summary: In this study, the performance of pressure-retarded osmosis (PRO) using NaHCO3-enriched geothermal water and geothermal brine was examined. The results showed that increasing the draw solution temperature improved water flux without compromising reverse salt flux, leading to lower salt-to-water flux ratios compared to NaCl-based solutions. Physical cleaning methods were found to be more effective than chemical cleaning methods in terms of permeability recovery ratio and foulant morphology. The presence of Ca2+ in the draw solution resulted in a significant drop in water flux and reverse flux decrease due to the formation of a dense fouling layer. The water flux in PRO using geothermal brine as the draw solution was influenced by ionic compositions rather than pH levels.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Kai Zhao, Xiaoyun Wang, Yongcun Feng, Wei Gao, Wenjie Song, Liangbin Dou, Hailong Jiang
Summary: Due to the complexity of the fault activation mechanism in hot dry rock injection and production, a thermal-hydraulic-mechanical coupling mathematical model is established to evaluate the fault activation risk. The results show that the risk of fault activation increases with greater well spacing and injection flow, and with lower reservoir permeability and higher initial reservoir temperature. Different fault occurrences lead to different risks of fault activation. These findings are important for the safe and efficient development of hot dry rock reservoirs.
Article
Thermodynamics
Wenbo Huang, Jiwen Cen, Juanwen Chen, Wenjiong Cao, Zhibin Li, Feng Li, Fangming Jiang
Summary: Recent theoretical studies have shown that a novel scheme for earth-deep hot dry rock geothermal energy extraction using a super-long heat pipe is highly feasible. A field test using a 3000-m heat pipe was conducted to demonstrate its practical feasibility, and the results showed successful heat extraction with an average rate of 190 kW over a 30-day period without significant decline.
Article
Construction & Building Technology
Pin Liu, Shengai Cui, Chen Guo, Qihong Wu, Wei Xia, Xuefeng Xu
Summary: This study uses a concrete-rock restrained shrinkage test device to investigate the shrinkage performance of concrete in hot and dry environments, and explores the inhibitory effect of steel fiber and shrinkage reducing admixture on concrete shrinkage. The results show that concrete expands initially under hot and dry environments, but the shrinkage rate increases rapidly with age, slows down after a certain period, and eventually stabilizes.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Geological
Leping He, Chengyi Huang, Qijun Hu, Junsen Zeng, Haoyu Wang
Summary: This study investigates the failure mechanism of high temperature hot dry rock (HDR) under microwave irradiation. The experiments show that the uniaxial compression strength of granite decreases the most at 500℃-600℃, with an average reduction of 62.77%. The failure form changes from brittle failure (untreated) to ductile failure (800℃) with the increase of microwave irradiation temperature. Microwaves cause heat accumulation near the magnetron, resulting in the formation of crack networks and a molten cavity.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
Article
Thermodynamics
Juanwen Chen, Wenbo Huang, Jiwen Cen, Wenjiong Cao, Zhibin Li, Feng Li, Fangming Jiang
Summary: A novel technical scheme for extracting deep-earth hot dry rock heat using a super-long gravity heat pipe (SLGHP) system in a single-well has attracted attention in the geothermal energy community. This study proposes a selection criterion to guide the fast screening of potential working fluids for SLGHP. The criterion evaluates the effect of working fluid on SLGHP thermal performance based on the temperature gradient along the SLGHP. Numerical simulations and fast-screening evaluations demonstrate good consistency, indicating the validity of the proposed criterion. The study suggests that ammonia is preferable for low temperature and small diameter heat pipes, while water is the best choice for high temperature and large diameter heat pipes. The selection criterion provides a convenient and reliable tool for choosing the most suitable working fluid for geothermal energy exploitation.
Article
Geochemistry & Geophysics
Yang Yang, Fangbo Chen, Siliu Yu, Yubin Zheng, Sujie He, Yan Zeng, Xiaoli Xie, Jie Zhu, Nan Luo
Summary: This study explores the deep geoelectrical structural background and thermal source mechanisms of the Gonghe Basin, Qinghai Province, China, through a magnetotelluric survey line combined with regional geology data. The results reveal the existence of a deep structure with high conductivity, comparable to the structure in the eastern part of the Qinghai-Tibet Plateau. The rushing reverse fault plays a crucial role in heat control and conduction, and high-temperature heat storage is found in four layers of geothermal resources. The proposed triple-polymorphism model of hot-dry rock provides critical insights into geothermal causes, resource prediction, and planning in the Qinghai-Tibet Plateau.
Article
Energy & Fuels
Ali Ghavidel, Robert Gracie, Maurice B. Dusseault
Summary: This article presents a parametric study of closed loop geothermal systems (CLGSs) design with multiple lateral horizontal wells, drilled in Hot Dry Rocks (HDRs), by developing a coupled finite element method (FEM) model for the problem of transient heat production in the reservoir and an Organic Rankine Cycle (ORC) model for electricity generation evaluation at the surface.
Article
Engineering, Chemical
Qiang Wu, Mingyan Liu, Xiong Wang
SEPARATION AND PURIFICATION TECHNOLOGY
(2019)
Article
Engineering, Chemical
Yongli Ma, Mingyan Liu, Yuan Zhang
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Engineering, Environmental
Xiaoping Guan, Xinju Li, Ning Yang, Mingyan Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Chemical
Li Xiangnan, Liu Mingyan, Dong Tingting, Yao Dong, Ma Yongli
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2020)
Article
Engineering, Chemical
Keying Ma, Xiliang Sun, Yuanyuan Shao, Mingyan Liu, Jesse Zhu
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Engineering, Chemical
Xiuhong Zhou, Yongli Ma, Mingyan Liu, Yuan Zhang
Article
Energy & Fuels
Junchao Song, Mingyan Liu, Xiuxiu Sun
Article
Engineering, Chemical
Xiaoping Xu, Mingyan Liu, Yue Ma, Min An, Yongli Ma
Article
Engineering, Chemical
Keying Ma, Mingyan Liu, Shaoqi Chen, Yuanyuan Shao, Jesse Zhu
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Energy & Fuels
Xiuxiu Sun, Mingyan Liu, Junchao Song, Yangshuhan Xu
Article
Engineering, Chemical
Jiaming Zhang, Yongli Ma, Mingyan Liu, Shuangying Deng
Summary: The local flow characteristics of gas-liquid-solid circulating fluidized beds, including gas bubble size and phase holdup, are crucial for reactor design and operation. However, due to measurement limitations, these characteristics have not been well studied. Recent work in telecentric imaging technology has provided a new method to measure local flow characteristics in gas-liquid-solid expanded beds. This study introduces a measurement method for the local phase holdups and bubble size distributions of three-phase circulating fluidized beds, while also investigating the influence of liquid and gas velocities on particle circulation rates.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Chen Li, Yongli Ma, Mingyan Liu, Kaiyue Wang
Summary: In this study, PIV was used to investigate the flow fields in gas-liquid mini-bubble columns. It was found that the increase of superficial liquid velocity could change the trajectory and size of bubbles, and the terminal velocity of bubbles was influenced by bubble buoyancy and flow resistance, slightly increasing with bubble coalescence.
Article
Engineering, Chemical
Areej Javed, Yongli Ma, Mingyan Liu
Summary: A flow model for the gas-liquid-solid circulating fluidized bed with a mesoscale flow structure has been established in this study. The study validates the bubble hydrodynamics calculated by the energy-minimization multiscale model using empirical correlations. The results show that the drag coefficient has a significant impact on bubble hydrodynamics, and the new EMMS model offers the best agreement with experimental data.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Jiewen Duan, Yongli Ma, Wei Huang, Mingyan Liu, Hao Guo
Summary: This paper introduces a solar-driven seawater desalination technology - fluidized evaporator, and demonstrates its advantages in terms of evaporation performance and desalination effectiveness through experiments.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hao Guo, Yongli Ma, Mingyan Liu, Shaojie Li, Jiewen Duan
Summary: This paper investigated the hydrodynamics of a three-phase circulating microfluidized bed, including flow regime transition, multibubble behavior, and solid circulation rate. Experimental results showed that increasing gas velocity facilitated flow regime transition, while enhanced wall effects could delay transitions between different flow regimes. The bubble diameter followed a log-normal distribution, and the bubble velocity was affected by various factors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
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)