Article
Thermodynamics
E. Inkeri, T. Tynjala, M. Nikku
Summary: Combining a heat pump with thermal energy storage is an efficient way to utilize variable renewable energy. This paper introduces a novel integration method for simultaneous consumption and charging of thermal energy storage using phase change materials. The concept is demonstrated in domestic hot water systems.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Martina Assereto, Julie Byrne
Summary: The study indicates that large-scale investment in solar in Ireland is not commercially viable without comprehensive policy support; however, with policy support introduced, solar investment becomes profitable. Sensitivity analysis results can provide investors with informed decision-making guidance.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Hanie Rezaei, Mehryar Jannesari Ghomsheh, Farshad Kowsary, Pouria Ahmadi
Summary: In this research, a novel HVAC system incorporating PCM heat exchanger and copper foam has been proposed to reduce the energy consumption of the HVAC system in electric vehicles, effectively increasing the vehicle range. The comprehensive thermal model developed for the vehicle cabin and the simulation results show a significant improvement in vehicle range compared to conventional heat pump systems at different weather temperatures.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
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
Construction & Building Technology
Yuanyuan Li, Ahmad Mojiri, Gary Rosengarten, Cameron Stanley
Summary: This study proposes a residential hot water, heating and cooling system that combines a heat pump with thermal energy storage to reduce electricity demand and adjust peak loads in the electricity network. By combining a solar system with thermal storage, significant reductions in electricity demand and peak loads can be achieved, improving solar utilization efficiency.
ENERGY AND BUILDINGS
(2021)
Article
Optics
Sergi Ramos-Calderer, Adrian Perez-Salinas, Diego Garcia-Martin, Carlos Bravo-Prieto, Jorge Cortada, Jordi Planaguma, Jose Latorre
Summary: This study introduces a quantum algorithm for European option pricing in finance, utilizing unary representation of asset value for calculation. The algorithm is divided into three parts, which simplifies the quantum circuit structure and improves calculation accuracy using quantum advantage, but requires more qubits to represent target probability distribution.
Article
Operations Research & Management Science
Carol Alexander, Xi Chen
Summary: This study introduces a general decision-tree framework to value an option to invest/divest in a project, focusing on the model risk inherent in standard real option valuation methods. The research examines how real option values depend on various factors including project dynamics, investment costs, exercise opportunities, project size relative to initial wealth, and investor's risk tolerance. Contrary to previous literature, it is found that real option values can decrease with project volatility and increase with investment costs, and the attractiveness of large projects compared to small projects depends on investor risk tolerance, changes in risk tolerance with wealth, and cost structures to invest in the project.
ANNALS OF OPERATIONS RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Shuang Cheng, Chenghong Gu, Ignacio Hernando-Gil, Shuangqi Li, Furong Li
Summary: This paper proposes a novel real option-based network investment assessment method to quantify the flexibility value of battery energy storage systems in distribution network planning. By using geometric Brownian motion to simulate long-term load growth uncertainty, the method avoids the bias of traditional net present value frameworks and evaluates the flexibility value of different investment strategies. The results show the importance of flexibility values of battery energy storage systems in distribution network planning under demand growth uncertainties.
IET RENEWABLE POWER GENERATION
(2022)
Article
Energy & Fuels
Wenxuan Tong, Zhengang Lu, Julian David Hunt, Haisen Zhao, Minxiao Han, Guoliang Zhao
Summary: This paper studies the energy management system of gravity energy storage technology and proposes a maximum height difference control method, which has been validated to be effective. The research findings indicate that gravity energy storage technology has wide application prospects.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Plant Sciences
Joris Macquet, Shantala Mounichetty, Sylvain Raffaele
Summary: Plants and pathogens engage in a coevolutionary arms race, leading to diversification and specialization of genes involved in resistance and virulence. Major innovations in plant-pathogen interactions have emerged through the expansion of gene function. Understanding these molecular mechanisms is crucial for the functional and predictive biology of plant-pathogen interactions.
TRENDS IN PLANT SCIENCE
(2022)
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
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
Energy & Fuels
Bernd Eppinger, Daniel Steger, Christoph Regensburger, Juergen Karl, Eberhard Schluecker, Stefan Will
Summary: This study presents the design and development process of a Pumped Thermal Energy Storage system, identifying the final candidate for the demonstrator. Simulated data shows the system's power efficiency of up to 59%.
Article
Thermodynamics
Marco Griesbach, Andreas Koenig-Haagen, Dieter Brueggemann
Summary: Ice energy storage systems have the potential to be a promising technology for utilizing waste heat in nonresidential buildings. However, there is a lack of research on using waste heat instead of solar benefit in these systems. This study develops a detailed numerical model and validates it with measured data, aiming to optimize and control ice energy storage systems in nonresidential buildings with waste heat recovery capability.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Civil
Ke Liu, Zi-Rui Liu, Zhi-Yan Yang, Xiao-Xi Zhang, Rong Tai, Yong-Guang Cheng
Summary: This study applied one-dimensional and three-dimensional coupled computational fluid dynamics method to simulate load rejection transient in a middle-head plant and analyze the evolution and influence of cavitation cavities. The findings provide valuable references for research and engineering design.
JOURNAL OF HYDRAULIC RESEARCH
(2022)
Article
Economics
Marie-Louise Arlt, David Chassin, Claudio Rivetta, James Sweeney
Summary: This paper examines the impact of real-time pricing and load automation on residential distribution systems. The study finds that implementing real-time pricing can result in an aggregate welfare gain of 39 USD per customer and year. However, it also notes that RTP and load automation may significantly increase peak system load. Introducing a market-based demand management system can further enhance welfare gains and reduce grid investment.
Article
Economics
Javier Jorquera-Copier, Alvaro Lorca, Enzo Sauma, Stefan Lorenczik, Matias Negrete-Pincetic
Summary: As countries update their climate ambitions, low-carbon hydrogen production and use present opportunities for emissions reductions and economic development. A case study for Chile shows that integrating hydrogen and electricity networks can lower system costs and enhance renewable integration, but policy support is needed to address concerns related to water and land use.
Article
Economics
Dawit Guta, Hisham Zerriffi, Jill Baumgartner, Abhishek Jain, Sunil Mani, Darby Jack, Ellison Carter, Guofeng Shen, Jennifer Orgill-Meyer, Joshua Rosenthal, Katherine Dickinson, Rob Bailis, Yuta Masuda
Summary: Household solid fuel use is detrimental to health and the environment. The Indian government's PMUY subsidy has successfully promoted the adoption of LPG by millions of households. However, there is limited understanding of the decision-making process to reduce solid fuel use after transitioning to cleaner fuels. This study found that factors such as household wealth, social status, education level, and the prevalence of LPG use in the village are positively associated with LPG consumption and the discontinuation of solid fuel use. On the other hand, factors such as distance to LPG refill delivery, household size, and the PMUY subsidy are negatively associated with the share of LPG use.
Article
Economics
Nicolas Morell-Dameto, Jose Pablo Chaves-Avila, Tomas Gomez San Roman, Pablo Duenas-Martinez, Tim Schittekatte
Summary: This paper assesses the performance of differently implemented forward-looking network tariff designs and proposes an innovative coordination mechanism to increase predictability in a future with many flexible customers. The study reveals that if large shares of customers synchronize their responses to highly time-varying and locational-specific network charges, it can lead to unexpected reinforcements.
Article
Economics
Alexandra Gritz, Guntram Wolff
Summary: Russia's weaponization of gas supplies shook the energy security of Central and Eastern Europe in 2022. The region responded by increasing alternative energy supplies and developing new gas supply routes. Renewable energy, nuclear energy, and hydrogen play important roles in the long-term. Mitigating the impact of this shock requires the EU to prioritize the integrity of its energy market.
Article
Economics
Jaroslaw Kantorowicz, Marion Collewet, Matthew DiGiuseppe, Hendrik Vrijburg
Summary: Economic costs are a major political obstacle to investing in climate change mitigation and adaptation measures. The method of financing plays a crucial role in determining public opposition to government green investments, with debt financing being less opposed than broad-based taxes. This study suggests that credit market tools, such as green bonds and debt for climate swaps, can be politically efficient in increasing support for green financing. Carbon taxes and wealth taxes are found to be the most preferred options.
Article
Economics
Kun Guo, Liyuan Luan, Xiaoli Cai, Dayong Zhang, Qiang Ji
Summary: This paper investigates China's energy trade stability using a survival analysis approach. It finds that the energy trade linkages between China and 153 other countries are complex and unstable, with short periods of trade with many countries. Geopolitically risky regions, such as the Middle East and Africa, have the lowest trade stability. Climate risks have significant effects on energy trade stability. The paper proposes several policy options to improve energy trade stability in China, with special attention to increasing global climate risks.
Article
Economics
Simona Bigerna, Piyush Choudhary, Nikunj Kumar Jain, Silvia Micheli, Paolo Polinori
Summary: This study estimates the willingness to pay of Indian urban consumers for a continuous supply of electricity using contingent valuation method. The findings show that the amount consumers are willing to pay depends on the duration of power outages, with households preferring shorter outages. Income and environmental attitude also positively influence higher willingness to pay. These insights can inform policymakers in designing more reliable and customer-centric energy generation and distribution models.
Article
Economics
Temilade Sesan, Unico Uduka, Lucy Baker, Okechukwu Ugwu, Ewah Eleri, Subhes Bhattacharyya
Summary: This study examines the impact of the regulatory framework on rural electrification and universal energy access goals in Nigeria's mini-grid sector. The findings suggest that while the current framework has fostered sector growth, additional measures are necessary to ensure equitable distribution of access among rural populations.
Article
Economics
Rui Shan, Noah Kittner
Summary: Energy storage is a cornerstone in decarbonization planning as it reduces operational costs and greenhouse gas emissions, while enhancing resilience and renewables integration. However, storage developers in different regions have varying economic and environmental considerations, thereby requiring policy intervention to achieve long-term emission reductions.
Article
Economics
Tung Durmaz, Sevil Acar, Simay Kizilkaya
Summary: This study investigates the phenomenon of strategic capacity withholding in the Turkish electricity market and its relationship with the capacity remuneration mechanism. The empirical results provide strong evidence of strategic capacity withholding and show that the capacity mechanism contributes to the duration of failures. The study offers important insights for policymakers, including the implementation of a random verification mechanism and restructuring of the capacity mechanism in Turkey.
Article
Economics
Tii N. Nchofoung
Summary: The study finds that oil price shocks have a negative impact on Africa's energy transition, particularly in rural areas and net crude oil exporting countries. However, oil price shocks cannot explain the urban-rural differences in clean energy access. Therefore, increasing investment in clean energy and technologies in rural areas is necessary to enhance the resilience of the energy sector to oil price shocks.
Article
Economics
Najia Saqib, Muhammad Usman, Ilhan Ozturk, Arshian Sharif
Summary: This study examines the impact of environmental technologies, financial growth, and energy use on ecological footprint and green growth. Environmental innovation and renewable energy deployment contribute to green growth, while financial expansion and non-renewable energy use have negative effects on the environment. The study also identifies causal relationships between different factors.
Article
Economics
Yessica C. Y. Chung, Noxolo Kunene, Hung-Hao Chang
Summary: The Renewable Energy Certificate (REC) is considered an innovative technology for building a green society. This study investigates the impact of REC purchases on stock return and volume in Taiwan between 2017 and 2021. The findings suggest that REC purchases have a positive effect on stock returns of manufacturing firms but not service firms. The frequency of REC purchases is also an important factor in the relationship between REC purchase and firm value. Additionally, the study reveals that public attention to environmental pollution plays a crucial role in positive stock returns and volume, while ESG disclosure is negatively associated with returns and volume.
Article
Economics
Seife Ayele, Wei Shen, Yacob Mulugetta, Tadesse Kuma Worako
Summary: This paper addresses the challenges of governing energy procurement from a mix of non-hydropower renewable energy sources supplied by independent producers. Building on political economy analysis and five case studies of independent producer projects from Ethiopia, it seeks to understand the root causes of the protracted delays and limited extent of procurement by independent producers. The key contestations lie in managing long term contracts, risk, uncertainty and in developing the institutional and human capacity to transition.