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22 results for “net energy”
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Research ArticleOpen accessIn the keywordsEstimating the Energy Indices and Profitability of Strawberry Production in Kamyaran Zone of IranPayman Salami, Hojat Ahmadi, Alireza KeyhaniProblem statement: The aim of this research is to determine the energy indices and to make a cost analysis of strawberry grown in open field in Kamyaran zone of Iran. Approach: The data used in the study were obtained from 35 local strawberry growers by using a face-to-face questionnaire in August-September 2009. Results: Total energy input for strawberry production was … …Energy Research Journal, Vol. 1, Issue 1 · 30 Jun 2010 · 7,915 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPre-Feasibility Study of Hybrid Hydrogen Based Energy Systems for Coastal Residential ApplicationsMohd Zamri Ibrahim, Roziah Zailan, Marzuki Ismail, Abdul Majeed MuzathikProblem statement: The purpose of this study is to design a renewable energy hydrogen based power system to provide electricity to a coastal residential area in east coast area (Kuala Terengganu) of Malaysia. Approach: The selected case study represents a power demand of 20 kWh day-1. The autonomous system used in this study is diesel generator, wind and photovoltaic hybrid … …Energy Research Journal, Vol. 1, Issue 1 · 30 Jun 2010 · 7,825 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOptimal Planning and Design of an Environmentally Friendly Hybrid Energy System for Rural Electrification in IraqAli Saleh Aziz, Sara Ahmed KhudhierCurrent power systems create environmental effects because of the using of fossil fuels, specially coal, since CO2 is released to the atmosphere. Contrary to conventional energy sources, renewable energy sources produce a clean energy which is in general free of pollution, environmentally sustainable and technologically efficient. There is an increased interest in solar energy that can generate electricity with no … …American Journal of Applied Sciences, Vol. 14, Issue 1 · 26 Jan 2017 · 7,803 accessesView PDFCite
Case ReportOpen accessIn the abstractEnergy Positive Futures: A Critical Overview of Energy Plus BuildingsErdem CuceEnergy Plus Buildings (EPBs) represent a transformative leap in sustainable architecture by producing more energy than they consume annually. As nations commit to net-zero targets and climate resilience, EPBs serve as living laboratories for integrating renewable energy, energy-efficient systems, and smart technologies. This editorial synthesises current advancements, policy frameworks, and technological integrations enabling EPBs. It also critically examines the barriers, … …Energy Research Journal, Vol. 14, Issue 1 · 8 Jan 2026 · 2,929 accessesView PDFCite
Research ArticleOpen accessIn the abstractEconomic Evaluation of Standalone Hybrid PV–H2 with Storage SystemAdeyinka Victor Adebayo, Samuel Oladeji, Hussein Kehinde Adebayo, Ismaheel Oyeyemi OladejoThis study evaluates the economic performance of a standalone hybrid PV-H2 system with battery storage for small-scale electricity demand. The methodology involves comparing various configurations of standalone PV, storage, and hybrid PV-H2 systems under different discount rates and evaluation periods. Economic indicators such as Net Present Value (NPV), Payback Period, and Discounted Annualized Return (AAR) determine financial viability. Results indicate … …American Journal of Engineering and Applied Sciences, Vol. 18, Issue 1 · 4 Mar 2025 · 7,117 accessesView PDFCite
Research ArticleOpen accessIn the abstractCooling Load Prediction in the Under-Actuated Zone with Multilayer Perceptron Artificial Neural NetworkYaddarabullah, Aedah Abd Rahman, Amna SaadThis study focuses on addressing the challenge of predicting cooling loads in under-actuated zones, where the variability in occupant behavior, environmental conditions, and electronic usage creates complex dynamics. Traditional models like Support Vector Regression (SVR) and E-Lastic-Net (ELN) often struggle to capture these non-linear relationships, leading to inefficient Heating, Ventilation, and Air Conditioning (HVAC) management and increased energy consumption. To … …Journal of Computer Science, Vol. 21, Issue 3 · 27 Jan 2025 · 5,300 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Toolkit Approach for Carbon Capture and Storage in Offshore Depleted Gas FieldRaj Deo Tewari, Tan Chee Phuat, Mohd Faizal SedaralitFossil fuels are considered a dependable, cost-effective, and efficient energy source and their utilization has resulted in tremendous growth for humanity. However, it has its downside also. Experts are of the view that present energy systems are unsustainable due to their detrimental impacts on the environment. Oil and gas producers are charged that their infrastructure, utilization of materials and technologies … …American Journal of Environmental Sciences, Vol. 19, Issue 1 · 17 May 2023 · 6,196 accessesView PDFCite
Research ArticleOpen accessIn the abstractEfficiency of Japanese Millet (Echinochloa Frumentacea) Fodder Crop Cultivation in the Arid SteppeNurbolat Mukhanov, Nurlan Serekpayev, Nurlan Balgabayev et al.Japanese millet is a relatively new, valuable fodder crop. 100 kg of Japanese millet hay contains 54.0-60.5 kg of feed units or 6.9 kg of digestible protein. Besides, Japanese millet makes it possible to obtain environmentally friendly food, since the plant is not affected by diseases and pests, therefore, the use of pesticides is not required when cultivating it. However, … …OnLine Journal of Biological Sciences, Vol. 23, Issue 4 · 18 Sep 2023 · 4,963 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Renewable Energies and Big Data on the Biggest Spanish Energy Power Companies’ Business ModelsPablo de MergelinaSince the emergence of renewable energy sources and thanks to the encouragement of governments and the interest of citizens in an economical, environmentally friendly and sustainable system, the electricity sector is in a transition to renewable energy. Renewable energy is not simply the cornerstone of a transaction, but an entire electric revolution. Literature review reveals the following question: How will … …American Journal of Economics and Business Administration, Vol. 12, Issue 1 · 17 May 2020 · 8,046 accessesView PDFCite