This study proposes a new configuration for synthesizing clean ammonia using clean hydrogen produced by the renewables. The proposed system mainly consists of proton exchange membrane electrolyser, pressure swing adsorption unit, compressor, ammonia synthesis reactors and condenser. The designed configuration uses a cascaded approach for ammonia synthesis by employing two reactors in series to achieve

Biodiesel has been widely considered as an alternative fuel for aircraft and power generation turbine engines, but experimentation in literature is mostly limited to microturbines and technological challenges remain open regarding its sustainability. The present study publishes the experimental methodology and the obtained results of testing a full-scale turbojet engine J69-T-25A using blends of JetA1

Regarding the important role of combined cooling and power (CCP) systems in improving the efficiency of power plants, and also the ability of ORC and ERC systems in the exploitation of low-to medium-grade energy sources, a novel CCP system is presented which is based on geothermal flash cycle as topping cycle, organic Rankine cycle, and ejector refrigeration as the bottoming cycle for power and cooling

Greenhouse cultivation is a rapidly growing part of the agricultural sector. The reduction of energy use in greenhouses is strongly connected with the reduction of the production cost and the impact of greenhouse farming on the environment. In this work, an innovative greenhouse structure towards energy conservation and crop frost preventing is studied in a real scale greenhouse structure. The system

Thermochemical technologies used to burn municipal solid waste are one of the relatively new and appropriate methods for waste management. By burning waste, heat and gases have arisen which can be used as the energy source to generate electricity. Due to the high cost, pollution emissions and diversity of such power plants, comprehensive studies are required. Therefore, the purpose of this study is

The analysis of energy consumption patterns in agriculture is vital because of the concern for natural resources and the adverse effects of the misuse of various energy resources on human and environmental health. The present research is an attempt on the ecological sustainability assessment of rice production in Mazandaran Province, Iran, using the emergy analysis approach and fuzzy logic. Two agricultural

A solar concentration photovoltaic (CPV) system with compact linear Fresnel reflector (CLFR) concentrator is described in this paper. The design approach of the CPV system is introduced. Four different CLFRs are designed and compared, including one complete type and three hybrid type CLFRs. In order to evaluate the optical performance of the CPV system, solar concentration processes of the four CLFRs

We developed a comprehensive infrastructure simulator that optimizes the energy consumption of the city. The entire optimization of the simulator—including the planned network connecting the demand side to the supply side of the city—is a notable feature of the machine. The demand side equipment (air conditioning heat source type) and supply side infrastructure (system power, distributed power source

As global climate change is becoming a more pervasive issue, the environmental impact of electricity production is once again in the spotlight. In the context of global climate change it is critical to focus on shifting towards more sustainable electricity production methods, which meet the electricity demand without contributing significantly to the environmental footprint. Using photovoltaic (PV)

Photovoltaic market is a globally growing market, and this also reflects the current trend in Turkey. In this study, a grid-connected photovoltaic (PV) power plant of 2130.7 kWp rated power located in the eastern part of Turkey was analysed. The photovoltaic plant was assessed in terms of performance parameters such as reference yield, array yield, final yield, inverter efficiency, capture loss, system

In current attempt, to augment the efficiency of unit, turbulators with different styles were scrutinized. For better describing the nanomaterial behavior, mixture model was employed and turbulent flow with use of k-ɛ model was examined. For verification purpose, comparison with experimental data was reported. With involve of holes, Sgen,th augments about 8.88% for lowest Re. Highest reduction of Sgen

This study presents an evaluation of the potential impacts of Renewable Energy Sources (RES) and Demand Response (DR) on the Generation and Transmission Expansion Planning (GTEP) problem. This is highly essential in order to increase RES penetration in power systems thereby ensuring long term energy security and emissions reduction. GTEP with demand response is jointly considered so as to achieve an

In order to determine the energy, economic and emissions avoided contribution of Domestic Solar Water Heating Systems based on the Thermosyphon Principle (DSWHS-TP) in a country, a detailed methodology was designed. The methodology was applied to three countries (Mexico, Costa Rica, and Democratic Republic of the Congo (DRC)) to show its versatility. Results showed that the annual average energy supplied

Rapid development in energy systems results in a choice question for decision-makers. Since many conflicting criteria are involved in the decision process, multi-criteria decision-making (MCDM) could be used. To make the decision process more suitable and reliable in reality, this paper introduces a sustainability prioritization framework with hybrid-data consideration via the integration of fuzzy

For heat transfer analysis, the thermal properties of the heat transfer fluid is aninterestingtopic of current research. The hybrid nanofluids have better effective thermal conductivity, which is being used to improve the heat transfer rate. This experimental study presents the heat transfer characteristic of aqueous Zinc Ferrite/water (ZnFe2O4/water) nanofluids. ZnFe2O4/waternanofluids were prepared

In this paper, comparative energy, exergy and economic analysis of natural refrigerant couples working in a cascade refrigeration system incorporated with a flash tank in its higher temperature cycle and a flash intercooler with indirect sub-cooler in its lower temperature cycle have been done. An analysis is conducted using seventeen refrigerant couples from eight natural refrigerants, namely R717

Worldwide energy supply is rapidly shifting towards more sustainable and cleaner power generation technologies including solar PV, wind turbines and natural gas. The co-combustion of fuel blends, consisting of renewably-generated H2 and CH4, offer numerous operational advantages of gas turbines, including reduced turbine CO and NOx emissions. In this study, the combustion of H2 and CH4 was investigated

The objective of this work is to investigate the thermal enhancement margin with the implementation of (Syltherm 800/Cu) nanofluid in parabolic trough collectors in a systematic way. Three different collector kinds are studied; the evacuated tube receiver, the non-evacuated tube receiver and the bare tube without cover. The study is a systematic parametric investigation for different values of the

Different techniques have been proposed so far to improve the performance of thermal-driven membrane modules applied in solar desalination systems. These techniques have increased the freshwater productivity of the system but at the cost of its increased overall specific energy requirement. Due to this major drawback, the main objective of this study is to implement nanofluid in the feed stream of

Wind farms have been developed at both onshore and offshore sites to ease the global energy crisis in recent decades. Nevertheless, the differences between onshore and offshore wind characteristics and their wind energy potentials have rarely been studied. Based on two original sets of wind records respectively obtained from onshore and offshore wind measurement towers in southeast coastal region of

With the ever-increasing demand for energy and a growing concern for the non-renewability of the energy sources as well as the environmental pollution, renewable energy harvesting systems have emerged as one of the energy technologies globally. In this context, this research work addresses a novel, clean and environmentally friendly renewable energy generation technology that harvests energy from human

These days, due to distributed generation increasing, the operation and control of active distribution grid becomes complicated. Thus, their voltage control is the main topic of many research papers recently. While network reinforcement mitigated voltage rise in passive distribution networks, local voltage control, coordinated voltage control and centralized voltage control have been studied in several

Direct generation of drinking water from ambient air using sunlight is of great interest for many populations. Here, a new desiccant mechanism using a highly hygroscopic silica gel was tested on the double-slope half-cylindrical basin solar still (DS-HCBSS) to extract the water content from the ambient air. As this mechanism is new to be applied into the solar still, an experimental and predictive

In the present study, energy, exergy and thermodynamic analysis of a novel integrated system in form of combined cooling heating and power process is investigated. The proposed system consists of solid oxide fuel cell to produce electrical and thermal power, steam power turbine to generate additional electrical power, concentrating solar collector to provide a part of the process thermal energy and

Many photovoltaic module cooling techniques are available to reduce the solar cell temperature, resulting in enhanced efficiency. Although the power of the photovoltaic module is usually reported as a measure for the performance of the cooling technique, the performance assessment and comparison among different coolers become difficult if different photovoltaic module’s reference power is being utilized

With the use of large apertures (higher concentration ratios) in parabolic trough solar collectors, increased temperature gradients, increased heat losses and increased heat transfer irreversibilities become inevitable. As such, means of reducing the magnitude of these operating parameters to enhance the overall thermal and thermodynamic performances become crucial. In this study, the use of wire coil

The direct steam generator (DSG) solar power tower plant concept is receiving more attention due to its ability to provide superheated steam without any intermediate heat exchanger and heat transfer fluid. However, the literature on the time-dependent or quasi-static performance evaluation of these systems is limited. In this study, a thermoeconomic assessment of a DSG solar tower with a dual receiver

3D axisymmetric CFD model is developed for a solar chimney power plant (SCPP) in Manzanares, Spain, and potential impacts of chimney height (H) on main performance parameters are comprehensively analysed. Mesh-independent solutions are achieved, and accuracy justification is done over the previous numerical and experimental attempts prior to parametric research. Discrete ordinate (DO) non-grey radiation

With respect to the recent developments of hydrogen storage system (HSS), it is relevant to model these storage units in the network expansion planning. Also, most of the available expansion planning tools consider constant locations and sizing for renewable resources and only study the impacts of renewables on the model. It seems that considering variable location and capacity for renewable energies

Miniaturization and high integration are two important factors hindering the further development of electronic devices. The generated heat flux has been increasing, thus requiring efficient cooling systems. The corona wind cooling technology has significant advantages and is likely a new effective solution for cooling electronics. A high-performance solid-state fan (SSF) based on corona discharge was

Ghana is endowed with lot of potentials in the renewable energy sector which are yet to be fully exploited. This research evaluated the techno-economic potentials of PV-Wind-DG-Battery and Wind-DG- Battery hybrid power plants in the southern part of Ghana in a town call Mankwadze to ascertain the bankability of the two systems for large-scale commercial electricity generation. The levelized cost of

A cost model is built for transformation of tractors with diesel into electric tractors. Then economic assessment of the transformation is carried out by the life cycle cost, sensitivity coefficient and payback period of incremental investment (IPBP). Results show that the cost of electric tractor transformation increases significantly with the increase of power, but the transformation is limited by

The objective of the present work is the investigation of a regenerative supercritical Brayton cycle (SBC) and its combination with an organic Rankine cycle (ORC). The study includes assessment, comparison, and single-objective optimization of these systems which are driven by molten salt solar power tower (SPT). First, the performances of 13 different working fluids from 18 introduced gases in the

In the residential sector, energy micro-generation and its intelligent management have been creating novel energy market models, considering new concepts of energy usage and distribution, in which the prosumer has an active role in the energy generation and its self-consumption. The configuration of a solar photovoltaic system integrating energy storage in Portugal is yet unclear in the technical,

In this paper, an artificial neural network (ANN) is developed to assess hybrid photovoltaic thermal (PVT) systems for grid-connected (GC) electricity generation, space heating and domestic hot water providing in heating dominated regions of Iran. To do so, monthly and annual performance of a 5 kWp GCPVT system is simulated for a single-family house. The simulation results show that the GCPVT system

In actual operation, solid oxide fuel cells are vulnerable to performance degradation. Predicting degradation trends and taking appropriate measures to reduce voltage degradation can prolong the lifetime of fuel cells. In addition, because the influence of related factors on the voltage degradation and efficiency are mutually coupled, it is necessary to take into account the efficiency when decreasing

Plastic waste is on the rise and continues to enter in every consumer product. Their recycling, however poses challenges due to their compositions and inhomogeneity. Gasification is an energy conversion route of hydrocarbon and is a well-developed technology for coal, but not for municipal-solid-waste (MSW) derivatives (plastic/tires/wood). Polyethylene (PE), polypropylene (PP), polystyrene (PS) holds

Solar air heaters are widely used in various household and industrial applications. Reduced thermal efficiency of solar air heaters has necessitated the researchers to focus on the improvement of the thermal performance by providing artificial flow modification techniques in the flow field. As a result of this, laminar sublayer beneath the absorber plate will get disturbed and this helps to increase