Review
Green & Sustainable Science & Technology
Tian You, Wei Wu, Hongxing Yang, Jiankun Liu, Xianting Li
Summary: The study reviews the hybrid PVT-GSHP technology, discussing the principles, configurations, and functions of different system categories. It also suggests future directions for improvement, including advanced ground heat exchangers, PVT types, hybrid systems, and optimal design for better performance.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Zhihang Zheng, Jin Zhou, Feng Xu, Rongpeng Zhang, Guang Deng
Summary: This study investigates the performance and feasibility of a PV-assisted ground source heat pump and air source heat pump system in hot summer and cold winter regions of China. The results show that the PVGSHP-ASHP system can effectively address load imbalance issues and achieve higher system efficiency, while also reducing costs.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Construction & Building Technology
Negar Ashrafi, Rouhollah Ahmadi, Alireza Zahedi
Summary: Due to fluctuating fossil fuel prices and their adverse environmental impact, the implementation of a fast and sustainable renewable energy system is necessary. This study aims to present an alternative plan to reduce fossil energy consumption in residential buildings by utilizing renewable energy sources, such as ground source heat pumps (GSHP) and solar energy. By simulating and comparing three different scenarios, it is found that the combination of GSHP and building integrated photovoltaics (BIPV) along with solar collectors leads to the highest reduction in energy consumption, as well as significant economic benefits and carbon dioxide emissions reduction.
ENERGY AND BUILDINGS
(2023)
Article
Energy & Fuels
Yuanyuan Li, Gary Rosengarten, Cameron Stanley, Ahmad Mojiri
Summary: Due to time constraints to meet emissions reduction targets, electric heating is the fastest way to decarbonize buildings. However, the high power demand of these heating devices poses challenges to the electricity supply chain. Cheap and safe thermal storage can provide a viable solution. A proposed multi-function thermal system combining solar PV, heat pump, and thermal storage can effectively reduce a building's grid-electricity demand and increase its solar self-consumption.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Sara Bordignon, Giuseppe Emmi, Angelo Zarrella, Michele De Carli
Summary: This paper introduces a new Type for simulating a reversible water-to-water heat pump and evaluates its performance under different refrigerants. By simulating the heating and cooling system under various climate conditions, the study demonstrates the long-term performance of the ground source heat pump and compares it with traditional refrigeration systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Spyridon Chapaloglou, Athanasios Nesiadis, Konstantinos Atsonios, Nikos Nikolopoulos, Panagiotis Grammelis, Angel Carrera, Oscar Camara
Summary: This study investigates a grid-connected microgrid system at a sport center facility in Barcelona, Spain, which includes solar PV, BESS, and heat pump installations. Two different energy management strategies are examined to optimize self-sufficiency and reduce electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Chuanhui Zhu, Baoguo Li, Shubin Yan, Quanquan Luo, Chao Li
Summary: With the increasing scarcity of energy resources and worsening environmental issues, countries around the world are actively developing the use of renewable energy sources. The technology of combining solar energy and heat pumps is an important direction for the development of new energy utilization technologies. Through experimental studies and system simulation analysis, the system shows a high coefficient of performance and efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
Yubo Wang, Zhenhua Quan, Yaohua Zhao, Lincheng Wang, Heran Jing
Summary: This paper studies the feasibility of a coupled air and ground source heat pump system with energy storage for building energy supply. The system utilizes auxiliary heat sources to achieve high-performance heating and energy storage, while optimizing defrosting control and soil heat balance. It has economic and environmental advantages.
Article
Energy & Fuels
Bo Xiang, Yasheng Ji, Yanping Yuan, Dan Wu, Chao Zeng, Jinzhi Zhou
Summary: This study introduces a novel solar energy collector PVTR and its corresponding PVTR-GSHP system to replace the traditional PVT collector. Simulation analysis suggests that under specific conditions, the optimal combination of GHE length and PVTR area is 4000m and 216m².
Article
Construction & Building Technology
J. M. Cardemil, W. Schneider, M. Behzad, A. R. Starke
Summary: This study introduces a novel water source heat pump system using outdoor pools in a Mediterranean climate region of Chile. The results indicate that the system operates more efficiently in warmer climates, and is economically feasible for buildings larger than 300 square meters.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Mohamed Ghorab, Libing Yang, Evgueniy Entchev, Euy-Joon Lee, Eun-Chul Kang, Yu-Jin Kim, Sangmu Bae, Yujin Nam, Kwonye Kim
Summary: Hybrid renewable energy systems combine multiple energy sources to increase efficiency, resilience, and reduce greenhouse gas emissions. The designed system in this study meets the annual heating/cooling needs of a building, with the ground source heat exchanger contributing significantly during different seasons. Through optimization, the system is able to self-generate a portion of its electricity needs, reducing reliance on the grid.
APPLIED SCIENCES-BASEL
(2022)
Article
Thermodynamics
Qingmei Wen, Gang Liu, Wei Wu, Shengming Liao
Summary: The study examines the performance of distributed energy systems (DES) considering DES design characteristics and renewable energy penetration, using a cultural industrial park as a case study. Results show varying energy, environmental, and economic performances of DES1 and DES2, with different sensitivities to electricity and natural gas prices. DES1 is more affected by renewable electricity penetration compared to DES2.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Saeid Mohammadzadeh Bina, Hikari Fujii, Shunsuke Tsuya, Hiroyuki Kosukegawa
Summary: The hybrid GSHP system utilizes supplemental energy sources to balance the load on the ground heat exchanger, improving system performance, especially in regions with imbalanced heating and cooling loads.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Qijie Ma, Jianhua Fan, Hantao Liu
Summary: The decarbonization of the building sector has the potential to significantly reduce greenhouse gas emissions. A ground source heat pump system based on energy piles and coupled with seasonal solar energy storage was designed for high-rise residential buildings' heating/cooling demands. An optimal design procedure was developed to consider the constraints of temperature changes in the energy pile and prevent cold build-up in the ground. Numerical evaluations were conducted to assess the system's performance under different ground conditions and heating-dominated climates across China.
Article
Energy & Fuels
Elisa Marrasso, Carlo Roselli, Francesco Tariello
Article
Energy & Fuels
Elisa Marrasso, Carlo Roselli, Maurizio Sasso
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Energy & Fuels
Francesca Ceglia, Adriano Macaluso, Elisa Marrasso, Carlo Roselli, Laura Vanoli
Article
Green & Sustainable Science & Technology
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso
Summary: This study analyzes the energy and environmental performance of a renewable energy community in Naples, Italy, consisting of two office buildings with rooftop photovoltaic plants and electric vehicles. Results show that energy sharing can significantly increase self-consumed photovoltaic electricity, and using time-dependent indicators can lead to lower primary energy demand and carbon dioxide emissions for the community.
Article
Energy & Fuels
F. Ceglia, E. Marrasso, C. Roselli, M. Sasso
Summary: Geothermal energy is widely available but mainly used for thermal purposes. Installing small power plants in underutilized geothermal sites and improving materials for heat exchangers can make geothermal energy more economically attractive.
Article
Thermodynamics
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso
Summary: The article proposed an Extended Total Equivalent Warming Impact (ETEWI) parameter to calculate CO2 equivalent emissions from direct and indirect contributions in the HVAC&R sectors, which allows for analyzing the environmental impact of both electric and gas driven devices. This innovative approach also defines a new environmental parameter to consider the direct/indirect contributions of the Urban Heat Island effect and the indirect CO2 emissions due to losses in distribution and transportation pipelines supplying natural gas to energy conversion systems.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2021)
Article
Green & Sustainable Science & Technology
Piero Bareschino, Elisa Marrasso, Carlo Roselli
Summary: This study examined the feasibility of using tobacco stems as fuel for a biomass boiler. The results showed that the boiler fed by tobacco chips offers environmental and economic advantages compared to traditional systems.
Editorial Material
Energy & Fuels
Mohamed Gaber Ghorab, Elisa Marrasso, Antonio Rosato, Carlo Roselli
FRONTIERS IN ENERGY RESEARCH
(2022)
Review
Energy & Fuels
Francesca Ceglia, Elisa Marrasso, Giovanna Pallotta, Carlo Roselli, Maurizio Sasso
Summary: This review paper investigates the recent literature on Smart Energy Communities, exploring their common characteristics, fundamental scopes, and principal evaluation indexes. It also highlights the significant barriers to the diffusion of these communities, including citizens' uncertainty and lack of information and technical skills.
Article
Energy & Fuels
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso, Guido Coletta, Luigi Pellegrino
Summary: This study defines a model for analyzing energy systems in renewable energy communities and applies it to the economic feasibility analysis of a renewable energy community in Tirano, Italy. The results show that wood-biomass-based renewable energy communities are economically feasible and can contribute to renewable technologies beyond photovoltaics.
Article
Thermodynamics
F. Ceglia, E. Marrasso, C. Roselli, M. Sasso
Summary: This study analyzed hourly electricity production data at both national and bidding zone levels in Italy from 2015 to 2019. It found that the energy efficiency and environmental indicators are greatly influenced by the mix of energy sources, and that there are significant differences in electric efficiency and CO2 emissions factors between regions.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Francesca Ceglia, Elisa Marrasso, Chiara Martone, Giovanna Pallotta, Carlo Roselli, Maurizio Sasso
Summary: This study aims to assess the benefits of establishing a Renewable Energy Community in the industrial area of Benevento, involving a mixed-use building and an industrial wastewater treatment plant in southern Italy. The alternative configuration of individual end users was also examined and compared with the current state where electric energy demands are met by the power grid. The results show that energy sharing increases self-consumption and self-sufficiency, reducing primary energy demand by 577 MWh annually (1.2 MWh/kW(p)), carbon dioxide emissions by 84 tCO(2), and operational costs by 101 kEUR.
Article
Thermodynamics
F. Ceglia, E. Marrasso, G. Pallotta, C. Roselli, M. Sasso
Summary: In Italy, the economic support scheme for high-efficiency cogeneration provides tradable White Certificates to cogeneration plants based on their annual primary energy saving. This paper evaluates the adoption of a time-dependent approach for assessing the energy saving and economic incentives of high-efficiency cogeneration in Naples. Three scenarios were outlined based on different time accuracies, and the impact on White Certificates was analyzed over a ten-year period. The innovative approach proposed in this study increased White Certificates and facilitated the achievement of national targets for high-efficiency cogeneration.
Article
Thermodynamics
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso, Peter Tzscheutschler
Summary: This study analyzes a ground source heat pump with a combithermal storage using real components and a Hardware in Loop test bed. The results show that the performance of the ground source heat pump is affected by heating load, ground temperature, and heat pump supply temperature.
APPLIED THERMAL ENGINEERING
(2022)
Review
Energy & Fuels
Carlo Roselli, Elisa Marrasso, Maurizio Sasso
Summary: Gas engine heat pumps have better environmental performance compared to electric heat pumps and can play a key role in diversifying the energy mix to combat climate change and improve energy security.
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
