The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A hierarchical Bayesian model is developed for predicting monthly residential per capita electricity consumption at the state level across the USA. The summer period is selected to target cooling requirements that are generally directly associated with electricity use compared with winter heating requirements that are derived from a mix of energy sources that has changed over time. Historical monthly...
The pre-turbine steam injection and the Miller cycle can be combined together to improve engine performances, but matching strategies of those two approaches under different operating conditions still need to be clarified. In this paper, thermodynamic processes of the pre-turbine steam injection and the Miller cycle are studied first followed by matching strategies based on a non-dimensional matching...
Using monthly data from February of 1996 to October of 2015, this article studies the effects of oil price shocks on China's stock market. Following Kilian [1], three different types of oil shocks named as oil supply shocks, aggregate demand shocks and oil-specific demand shocks are identified. We find the relationship between oil price shocks and stock market is unstable in the full sample, and there...
Phase change materials (PCM) are used in many industrial and residential applications for their advantageous characteristic of high capacity of latent thermal storage by means of an isothermal process. In this context, it is very useful to have predictive mathematical models for the analysis of the thermal performance and for the thermal design of these layers. In this work, an experimental validation...
Few investigations have been conducted on an ejector that has an auto-tuning capability to regulate the performance of a multi-effect distillation-thermal vapour compression (MED-TVC) desalination system with the variation of operating conditions. In this study, an adaptive nozzle exit position (ANXP) ejector was first proposed to enhance ejector performance by self-adjusting the position of the primary...
In this study advanced exergy and exergoeconomic analyses are performed on the integrated cryogenic air separation unit (ASU), oxy-fuel carbon dioxide power cycle and LNG vaporization process. Advanced exergy results show that endogenous part of exergy destruction is more than exogenous part which means interactions between the process components is not significant. CR-4 compressor with 190,095 kW...
This article assesses the impact of n-butanol (nB) and iso-butanol (isoB) as components of a butanol-acetone (BA) mixture on spray, combustion, engine performance and emission characteristics. The macroscopic spray characteristics including spray penetration, spray cone angle and spray volume of n-/iso-BA-diesel blends were measured at two injection pressures 300 bar and 500 bar. A direct visualisation...
Forecasting methods are one of the most efficient available approaches to make managerial decisions in various fields of science. Forecasting is a powerful approach in the planning process, policy choices and economic performance. The accuracy of forecasting is an important factor affects the quality of decisions that generally has a direct non-strict relationship with the decisions quality. This...
The main aim of the paper is to analyze the effect of different pretreatment processes (HTC, torrefaction and slow pyrolysis) on the properties of Miscanthus giganteus. In this study, the HTC process was conducted in a Zipperclave Stirred Reactor under following parameters: temperature (180, 200 and 220 °C), pressure (<2.5 MPa) and residence time (2, 3, 4, 6, and 12 h). The effect of temperature...
A portable device composed of photodiodes and bandpass filters was developed to measure local fuel concentration in a liquid hydrocarbon-fueled spray flame. The plasma emission spectra in and around the flame were selectively captured using such simplified device or plug instead of using a laboratory standard laser-induced breakdown spectroscopy (LIBS) system consisting of an ICCD and a spectrometer...
Pre-treatment can enhance anaerobic digestion of seaweed; however, seasonal variation in the biochemical composition of seaweed has a significant impact on the pre-treatment effect. In this study, various pre-treatments were employed for the brown seaweed Laminaria digitata harvested in March (with high ash content and low carbon to nitrogen (C:N) ratio) and September (with low ash content and high...
A novel standalone hybrid solar/wind/fuel cell (FC)/battery power generation system is designed and constructed. It consists of a photovoltaic (PV) array, a wind energy conversion system (WECS), a FC system, a battery bank, three unidirectional DC/DC converters, a bidirectional DC/DC converter, a unified maximum power point tracking (MPPT) controller, a control unit, and a DC/AC inverter. The contribution...
A fully coupled heat transfer model at pore-scale of volumetric solar receiver is established in this paper. The X-ray computed tomography technique is applied to reconstruct the porous structure. By generating the voxel mesh and coupling with the Monte Carlo Ray Tracing method, the energy source due to the solar radiation could be determined and then added to the unstructured CFD mesh. The governing...
Flameless calcination, where a heat transfer fluid is used to provide heat for the calcination reaction to a mineral feed material may reduce direct carbon dioxide emissions during calcination by 50%. Concentrated solar power (CSP) and high temperature reactors (HTRs) are low-carbon emitting energy sources suitable for flameless calcination. This work provides a brief economic evaluation of flameless...
Air-conditioning systems consume a large proportion of energy consumption in buildings, which leads to an important significance of energy-saving in air-conditionings. For liquid desiccant air-conditioning system, a new air-conditioning with good energy-saving potential, electrodialysis (ED) can be a reliable regeneration method, which cannot be affected by hot and wet air. In this paper, an ED regeneration...
Thanks to the lower overall emission of Electric Vehicles, the promising transportation has attracted numerous attentions from industry and academy. However, as a consequence of lower energy density in widely adopted electrochemical energy source-battery, the driving range per charge presents a major barrier for electric vehicle's large-scale commercialization. Additionally, the limited battery life...
The following article conducts a meta-analysis to systematically investigate why Representative Concentration Pathways (RCPs) in the Fifth IPCC Assessment are illustrated with energy system reference cases dominated by coal. These scenarios of 21st-century climate change span many decades, requiring a consideration of potential developments in future society, technology, and energy systems. To understand...
Considering the need for a reliable and environmentally friendly energy storage solution for addressing renewable energy intermittency issue and following the developments on Isothermal Compressed Air Energy Storage (I-CAES) systems, a new finned piston compressor which is characterized by increased heat transfer area and coefficient has been designed, analyzed, manufactured and experimentally tested...
The demand for the energy has increased drastically as a result of the rapid growth in industrialization, urbanisation and higher standard of living. One such potential substitute to fossil fuels is biodiesel that ensures sustainable energy source. The selection of appropriate source of biodiesel and proper blending of biodiesel plays a major role in alternate energy production. In the present work,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.