Article
Geosciences, Multidisciplinary
Dan David Ngoyo Mandemvo, Felix-Antoine Comeau, Jasmin Raymond, Stephen E. E. Grasby, Viktor Terlaky
Summary: This study aims to quantitatively assess the geothermal potential of an underground mine by developing a new method. Using a thermal power budget, the study considers the thermal inertia of water, surrounding rock, and water infiltration from nearby lakes. The results demonstrate that this approach could deliver 17,520 MWh y(-1) and 8234 MWh y(-1) of energy for heating and cooling purposes.
NATURAL RESOURCES RESEARCH
(2023)
Review
Thermodynamics
Zhaoxiang Chu, Kaijun Dong, Penghui Gao, Yijiang Wang, Qin Sun
Summary: Based on 44 documented demonstration projects worldwide, a novel conceptual aspect of mine-oriented lowenthalpy geothermal exploitation classification was initially proposed. Special attention was paid to a spatio-temporal perspective, and various geothermal media were discussed for heat recovery. Engineering issues such as configurations, parameters, hydro-thermo-geological conditions were analyzed for their effects on mine water-based geothermal systems.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
M. Soltani, Pooya Farzanehkhameneh, Farshad Moradi Kashkooli, Armughan Al-Haq, Jatin Nathwani
Summary: The study optimized parameters of geothermal heat pump (GHP) system using genetic algorithm, reducing installation costs and improving energy efficiency over a ten-year simulation. Ethylene glycol was identified as the preferred circulating fluid for significant energy consumption reduction.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Youngguk Seo, Un-Jong Seo
Summary: The study on using geothermal energy supply for greenhouses showed promising results in field tests in South Korea, demonstrating increased income, shortened payback periods, and viability for investment.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Civil
Miguel Angel Marazuela, Alejandro Garcia-Gil, Eduardo Garrido, Juan C. Santamarta, Noelia Cruz-Perez, Thilo Hofmann
Summary: The increasing use of shallow geothermal energy in urban areas is compromising geothermal energy availability and groundwater quality. This study proposes a novel methodology based on polar coordinates to assess the impact of shallow geothermal installations on urban aquifers. The results demonstrate the effectiveness of this methodology in evaluating thermal impacts and facilitating thermal management in cities.
JOURNAL OF HYDROLOGY
(2022)
Article
Energy & Fuels
Andrew J. Pimm, Tim T. Cockerill, William F. Gale
Summary: The potential to reduce energy demands in hydrogen-based industrial heating systems using high temperature reverse Joule-Brayton cycle heat pumps as preheaters is investigated in this study. The findings suggest that using these heat pumps at temperatures between 300-500 degrees C could significantly reduce hydrogen demands by over 20% and save at least 8% on the cost of green hydrogen up to 2050.
Review
Green & Sustainable Science & Technology
Zilong Zhao, Yu-Feng Lin, Andrew Stumpf, Xinlei Wang
Summary: This paper discusses the impact of groundwater on the performance of GHEs, as well as the challenges and strategies for addressing them through industry standard models. Research shows that flowing groundwater enhances GHE performance, but potential adverse effects may arise without proper monitoring and mitigation.
Article
Materials Science, Multidisciplinary
Baiyi Li, Jixiong Zhang, Hao Yan, Nan Zhou, Meng Li
Summary: This article investigates the thermal conductivity of gangue-cemented paste backfill through laboratory tests and analyzes the influences of mix proportion parameters and water saturation degree. The results show that the water/binder ratio significantly affects the thermal conductivity, while the cement amount has little influence. Moreover, there is a linear positive correlation between thermal conductivity and water saturation degree.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Thermodynamics
Y. Elaouzy, El Fadar
Summary: Renewable and bioclimatic techniques are crucial for sustainable buildings. The effectiveness of integrating PV, PVT, GSHP, and GR systems into a residential building in different Moroccan climates is investigated in this study. The simulations using EnergyPlus software showed that PV and PVT technologies performed the best in terms of energy, environment, and economics in all climates, while GSHP and GR techniques were beneficial in energy and environmental aspects but inefficient in economic terms. Carbon taxation had a positive impact on the economic benefits of these techniques. The findings can also be applied to other locations with similar climates and energy policies.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Carlos Baquedano, Alejandro Garcia -Gil, Miguel Angel Marazuela, Ana Maria Carnicer, Juan Carlos Santamarta, Alejandro Mejias Fernandez, Hector Aguilera
Summary: Thermal recycling is a major cause of efficiency loss in groundwater heat pump systems and understanding its effects on system performance is crucial for system design. This study addresses the nonlinearity of the thermal recycling problem using distributed numerical models of groundwater flow and heat transport combined with thermodynamic models of geothermal heat pumps. Simulation results show that thermal interference between production and injection is unavoidable and can lead to the inoperability of the heat pump in certain scenarios. Thermal recycling is also found to increase operation costs and have an environmental impact. The findings of this study improve our understanding of thermal recycling as a complex and transient process that results in efficiency loss in groundwater heat pump systems.
Article
Construction & Building Technology
Maksymilian Frac, Wojciech Szudek, Paulina Szoldra, Waldemar Pichor
Summary: This paper presents a laboratory study on grouts with a novel binder characterized by high thermal conductivity, designed for low-temperature geothermal applications. The study shows that the binder improves the thermal efficiency of the grouts while maintaining good mechanical properties and durability.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Thermodynamics
Vaishnavi Pandey, Anirbid Sircar, Namrata Bist, Kriti Yadav, Dharmesh Morabiya
Summary: This paper explores the use of geothermal energy for space cooling in residential and commercial applications. It introduces a low enthalpy geothermal energy utilizing space cooling system. The study shows that geothermal systems can be an effective and efficient way to cool spaces.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Calene Treichel, Cynthia A. Cruickshank
Summary: The study compared the energy performance of HPWHs and SAHPWHs, finding that SAHPWHs could fully offset the space heating increase of HPWHs in winter and reduce space cooling load in all climates studied.
Article
Environmental Sciences
David Banks, Jonathan Steven, Adam Black, John Naismith
Summary: This article presents a conceptual model of two MW-scale low enthalpy mine water geothermal heat pump schemes being developed in Tyneside, UK. The schemes involve extracting groundwater and heat from different aquifer systems and reinjecting them to deeper workings. The different aquifer systems possess varying hydraulic properties, making the development of such schemes a significant project risk that requires the involvement of skilled professionals.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Construction & Building Technology
Oguz Arslan, Asli Ergenekon Arslan, Taqiy Eddine Boukelia
Summary: A new residential heat pump system was designed for domestic use in the geothermal district heating system. The system integrated a heat pump into the substations of the residences, using a thermal energy storage unit instead of a conventional evaporator. Various systems were analyzed thermodynamically, and the most suitable system was determined through a multi-criteria decision-making analysis. The results showed that the designed system had a favorable NPV value, exergy efficiency, and CO2 reduction.
ENERGY AND BUILDINGS
(2023)
Article
Engineering, Environmental
Ting Bao, Zhen Liu (Leo), John Bland
COLD REGIONS SCIENCE AND TECHNOLOGY
(2019)
Article
Thermodynamics
Ting Bao, Si Liu, Yinghong Qin, Zhen (Leo) Liu
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Engineering, Geological
Ting Bao, Zhen Leo Liu
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2020)
Article
Energy & Fuels
Yinghong Qin, Yingpeng Li, Ting Bao
Article
Engineering, Civil
Ting Bao, Behnam Azmoon, Zhen (Leo) Liu
Summary: The study introduces a constrained optimization approach to predict freezing depth (FD) and thawing depth (TD) for accurate decision-making on spring load restrictions (SLR). Results show that the constrained optimization method outperforms non-constrained optimization in accurately predicting FD and TD, enabling precise SLR decisions. Additionally, the study questions the accuracy of using a Thawing Index (TI)/Freezing Index (FI) ratio of 0.3 for SLR removal dates in the U.S., suggesting that the FD and TD prediction model is more reliable for decision-making. This methodology presents a practical tool for road engineers and provides insights for preventing freeze-thaw induced damages in cold regions.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Environmental
Zhen (Leo) Liu, John Bland, Ting Bao, Michael Billmire, Aynaz Biniyaz
Summary: Pavement conditions are crucial for pavement performance and longevity. Developing a web-based pavement condition prediction tool can automate the prediction of Spring Load Restrictions, leading to cost savings in road maintenance.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
Yinghong Qin, Xijun Pang, Kanghao Tan, Ting Bao
Summary: The study found that replacing a portion of cement with biochar in pervious concrete has little impact on porosity and water permeability, but increases water absorption. When the biochar content is 0-6.5%, the compressive strength and splitting tensile strength of pervious concrete are higher than conventional concrete, but compromised above 6.5%.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Ting Bao, Zhen (Leo) Liu
Summary: This study introduces a novel method for bridge scour monitoring based on predominant natural frequency (PNF), allowing the prediction of the bridge scour characteristic curve (BSCC) using a few measured scour depth-PNF data points and estimation of the modulus of subgrade reaction. The proposed approach accurately predicts the whole BSCC in realistic scenarios and lays a solid foundation for frequency-based structural health monitoring methods.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Engineering, Geological
Ting Bao, Jeff Burghardt
Summary: This paper presents a Bayesian approach to quantify uncertainty in stress estimations for subsurface engineering applications. The approach provides an estimate of the 3D distribution of stress and its uncertainty, allowing for informed decision-making in engineering applications.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Chemistry, Analytical
Aynaz Biniyaz, Behnam Azmoon, Zhen Liu
Summary: This study investigates the intelligent control of groundwater in slopes using deep reinforcement learning (DRL). By training a DRL learning agent to regulate the flow rate of a pump, the aim is to keep the groundwater close to the target level and reduce the risk of slope failure. The results show that the geosystem integrated with DRL can dynamically adapt to diverse weather events and improve the control policy over time.
Article
Engineering, Geological
Ting Bao, Xuanming Ding, Zhen Liu, Han Cao
Summary: This study proposes a novel physics-informed optimization approach for analyzing the dynamic response of engineering structures in complex nonlayered soil conditions involving soil-structure interaction. By utilizing a few measured data points, the nonlinear frequency-scour depth relationship can be accurately estimated, providing assistance in situations where field testing is difficult or the demand for field measurements needs to be reduced.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2022)
Article
Geosciences, Multidisciplinary
Behnam Azmoon, Aynaz Biniyaz, Zhen Liu
Summary: This study utilizes high-resolution and LiDAR-derived digital elevation models (DEMs) to detect and locate landslides, and proposes a semi-automatic method for obtaining landslide inventories. The performance and application value of the method are validated through comparisons with existing landslide inventories and reports, as well as validation results.
Article
Green & Sustainable Science & Technology
Ting Bao, Han Cao, Yinghong Qin, Guosheng Jiang, Zhen (Leo) Liu
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)