Article
Energy & Fuels
Shitong Sun, S. Mahdi Kazemi-Razi, Lisa G. Kaigutha, Mousa Marzband, Hamed Nafisi, Ameena Saad Al-Sumaiti
Summary: This paper introduces a model that integrates CSP plants with combined heat and power systems to improve heat utilization and reduce overall costs, while also applying compressed air energy storage technology. Research shows that this virtual power plant design can achieve higher profits in the market.
Article
Engineering, Manufacturing
J. P. Kelly, L. R. Finkenauer, P. Roy, J. K. Stolaroff, D. T. Nguyen, M. S. Ross, A. T. Hoff, J. J. Haslam
Summary: Triply periodic minimal surface (TPMS) geometries, which can only be fabricated by additive manufacturing methods, are of interest for heat exchangers. Ceramic TPMS heat exchangers have superior performance and increased operating efficiencies compared to metal heat exchangers, especially in high temperature and pressure conditions. The properties of ultra-high temperature ceramic (UHTC) materials are also favorable for heat exchangers, particularly in concentrated solar power (CSP) systems. The goal of this study was to demonstrate the feasibility of binder jet additive manufacturing of a UHTC-TPMS structure and achieve high densities through sintering.
ADDITIVE MANUFACTURING
(2022)
Article
Energy & Fuels
Shuoyu Wang, Ahmed Abdulridha, Clay Naito, Spencer Quiel, Muhannad Suleiman, Carlos Romero, Sudhakar Neti
Summary: The study examines different concrete mix designs to improve thermal performance for energy storage at high temperatures. Various factors such as aggregate type and percentage, cementitious materials, water-cement ratio, steel fiber reinforcement, and iron oxide powder were experimentally investigated. The results showed that using siliceous aggregate with high volumetric percentage and silica fume replacement of Type I cement significantly enhanced thermal conductivity and specific heat of the concrete. Concrete mix designs with high aggregate percentages, siliceous coarse aggregate, silica fume replacement, and steel fiber reinforcement demonstrated consistent thermal performance under cyclic high temperature exposure.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Efstratios Tzinnis, Luca Baldini
Summary: This article presents a numerical study on the building integration of a liquid sorption storage combined with an air-source electric heat pump, showing significant reductions in electricity demand and CO2 emissions. Through dynamic building simulations, an autarky level of up to 83% and significant reductions in winter electricity demand and emissions were achieved.
Article
Thermodynamics
Aswin Karthik, P. Muthukumar
Summary: This study presents the development and performance analysis of a concrete based thermal energy storage module using fins to enhance heat transfer rate. Numerical simulations were conducted to study the thermal performance of the module with varying design parameters. The results show that the models with fins have reduced charging/discharging times and increased heat storage/retrieval rate compared to the model without fins. Additionally, using a trapezoidal fin shape can significantly reduce material usage without compromising thermal performance.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2022)
Article
Thermodynamics
Mario Petrollese, Mario Cascetta, Vittorio Tola, Daniele Cocco, Giorgio Cau
Summary: A novel Pumped Thermal Energy Storage (PTES) system integrated with a Concentrating Solar Power (CSP) plant is proposed and investigated. The system operates with the same working fluid as the CSP plant and includes a Thermal Energy Storage (TES) system composed of three packed-bed tanks. Mathematical models were developed to simulate the system's performance and evaluate the thermal profiles of the TES tanks. A feasible design with an exergetic roundtrip efficiency of about 60% was proposed based on the results.
Article
Energy & Fuels
Paloma Martinez-Merino, Patrice Estelle, Rodrigo Alcantara, Ivan Carrillo-Berdugo, Javier Navas
Summary: Nanofluids, with improved thermophysical properties compared to conventional heat transfer fluids, are attractive for research areas like solar energy. In this study, nanofluids based on WS2 nanosheets were prepared from thermal oil, and the use of surfactants improved the dispersion stability. Promising results were observed in terms of thermal conductivity and heat transfer coefficient for these nanofluids.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
Mario Cascetta, Fabio Licheri, Rosa P. Merchan, Mario Petrollese
Summary: This study analyzes the expected performance of an innovative PTES system integrated with a CSP plant. The results demonstrate the technical feasibility of the integration and the ability of the system to participate in energy arbitrage.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Rachel M. Orsini, Philip G. Brodrick, Adam R. Brandt, Louis J. Durlofsky
Summary: The study demonstrates the importance of integrating concentrated solar power with thermal energy storage in renewable energy systems for higher storage capacities, optimized operations, and increased net present value. Optimal storage duration and net present value are influenced by peaks in electricity prices, showing that selling storage at market prices is more beneficial than fixed Power Purchase Agreements.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Cristina Prieto, Francisco Javier Pino, Luisa F. Cabeza
Summary: This study evaluates the technoeconomic potential of a CSP plant with high temperature concrete as TES system compared to the standard commercial molten salts system, and finds that the molten salt system performs better than the high temperature concrete configuration in general conditions.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Ka Man Chung, Jian Zeng, Sarath Reddy Adapa, Tianshi Feng, Malavika Bagepalli, Peter G. Loutzenhiser, Kevin J. Albrecht, Clifford K. Ho, Renkun Chen
Summary: A systematic study was conducted to measure the effective thermal conductivity of ceramic particle beds, showing that gas conduction dominates while solid conduction and radiation contribute about 20% to the effective thermal conductivity at high temperatures.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Thermodynamics
Mohammed A. Hefni, Minghan Xu, Ahmad F. Zueter, Ferri Hassani, Mohamed A. Eltaher, Haitham M. Ahmed, Hussein A. Saleem, Hussin A. M. Ahmed, Gamal S. A. Hassan, Khaled I. Ahmed, Essam B. Moustafa, Emad Ghandourah, Agus P. Sasmito
Summary: We propose a novel three-dimensional analytical framework that accurately predicts and evaluates the thermal performance of geothermal borehole systems with single or multiple heat exchangers. The model includes solving the radial and axial temperature profiles, as well as extending to a three-dimensional arrangement. The framework enables accurate and efficient prediction of transient temperature profiles for geothermal boreholes, facilitating thermal design and implementation of geothermal systems.
APPLIED THERMAL ENGINEERING
(2022)
Article
Mathematics
Bo Zhang, Long Shi, Wenxuan Zhang, Chao Huan, Yujiao Zhao, Jingyu Wang
Summary: This study explores the application of ground heat exchanger technology in backfill mines and proposes strategies for improving the heat storage and release potential of the heat exchangers. It analyzes the heat storage and release characteristics of different configurations of heat exchangers and investigates the impact of key structural factors on their performance.
Article
Thermodynamics
Soleiman Iry, Roohollah Rafee
Summary: This paper proposes the idea of using baffles to improve the performance of coaxial geothermal heat exchangers (CGHE), and investigates the differences in thermal and hydrodynamic performance between baffled CGHE and conventional CGHE during heat injection and thermal recovery processes. The study shows that baffled CGHE has better thermal performance and quicker temperature recovery rate compared to conventional CGHE.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Review
Green & Sustainable Science & Technology
Yuan Ma, Gongnan Xie, Kamel Hooman
Summary: This paper provides a comprehensive review on critical aspects of Printed Circuit Heat Exchangers (PCHE) and its applications in solar thermal energy systems. The development process, manufacturing technology, channel configurations, thermo-hydraulic performance, and potential improvements are summarized and analyzed. Future research directions are also suggested.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
