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 method for choosing the optimum fineness of coal in pulverised-fuel boilers is presented. This method is based on economic criteria and takes into account variations of the power unit load as well as the durability and the output of pulverisers. Calculations are performed for short periods of time (e.g. 1 h), provided that it is possible to change the fineness of the coal by controlling the angle...
Alternative liquid fuels are attracting a lot of attention due to their potential for addressing possible future oil supply shortages. In China, oil shale, coal and biomass are considered as three significant feedstocks for alternative fuels. However, quantitative assessment of the sustainability of liquid fuels production based on these feedstocks is scarce. This paper uses the LCA (life cycle assessment)...
This paper describes new design and test procedures of an inlet gas system that is part of a moving granular bed filter. A series of experiments is conducted to demonstrate the collection efficiency of this method under different operating conditions. In addition, the dynamic model and the flow analysis of gas in the inlet gas system and filter bed are discussed. Several parameters are considered,...
For optimal power system operation, electrical generation must follow electrical load demand. So, short term load forecast (STLF) has been proposed by researchers to tackle the mentioned problem. Not merely has it been researched extensively and intensively, but also a variety of forecasting methods has been raised. This paper outlines a new prediction model for small scale load prediction i.e., buildings...
It is challenging to achieve a wide flammable range in micro combustors due to the increased heat loss. In the present work, the flammable range based on equivalence ratio for a novel micro combustor is investigated, and some interesting dynamic flame behaviors are observed, which include the flame blow-off, pulsating flame and the flame with repetitive flashback and pulsating (FRFP). Our analysis...
ZrCo alloy prepared by arc-melting method was decorated by Pd particles with different PdCl2 concentrations of 0.2 g L−1, 0.6 g L−1, and 1.0 g L−1, respectively. The effects of Pd coating on the microstructures and hydrogen storage properties of ZrCo alloy were investigated systematically. The modified ZrCo alloy is coated with flower-shaped Pd particles which transform from angular cluster into rounded-edge...
Energy harvesting (EH) from environmental energy sources has the potential to ensure unlimited, uncontrollable and unreliable energy for wireless sensor networks (WSNs), bringing a need to predict future energy availability for the effective utilization of the harvested energy. The majority of previous prediction approaches have exploited the diurnal cycle dividing the whole day into equal-length...
Biodiesel is an alternative and renewable diesel fuel, can be produced from diverse kinds of vegetable oils. The biodiesel effects on engine performance and emissions vary as the source of oil changes. In this study, castor oil biodiesel (CAB), coconut oil biodiesel (COB) and waste cooking oil biodiesel (WCB) were produced by transesterfication approach and blended with conventional diesel fuel (CDF)...
Although CSP has reached technological maturity, high capital investment and specific electricity cost remain the major development barriers. To reduce them, highly efficient, integrated, and cheaper CSP components are urgently needed. In this paper, we investigate a novel CSP plant configuration with a single-tank Thermal Energy Storage (TES) fully integrated with the steam generator.The objective...
The project reported in this paper used CFD as a tool to investigate the effect of multi-pass on the shell side heat transfer of a heat exchanger system. The heat exchanger system is equipped with six vertical thermosyphons transferring thermal energy from a heat source (air) to a heat sink (water). The CFD model has been experimentally validated. The two-phase change processes inside the thermosyphons...
Today's district heating (DH) networks in Norway are 2nd and 3rd generation systems, with supply temperatures ranging from 80 to 120 °C. In new developments, it is desirable to shift to 4th generation, low-temperature district heating (LTHD) in order to reduce the heat losses and enable better utilization of renewable and waste heat sources. A local LTDH grid for a new development planned in Trondheim,...
This paper presents the results of growing silver nanowire (Ag NW) meshes for utilization as photo-electrodes in dye-sensitized solar cells. These meshes have the advantage of high spectral transmission (>80%) in the visible-NIR range, and as electrodes, they provide better flexibility compared with traditional glass-based photo-electrodes. Another important feature is the high conductivity (low...
Using lignocellulosic biomass as an alternative resource for transportation fuel is an attractive prospect due to its abundance and low cost. Conventional pre-treatment methods such as steam explosion or ammonia fibre expansion need technologically complex equipment and high energy input, and they use toxic chemicals in order to achieve high glucose and ethanol yields. In this paper, the freezing...
Solar aided (coal-fired) power generation (SAPG) which is an efficient way to integrate solar thermal energy into normal coal fired power generation can reduce standard coal consumption rate (SCCR) for the coal fired power station and enhance solar-to-electricity efficiency (SEE) compared with solar alone thermal power generation. A SAPG model has been developed to study the energy and economic benefits...
This paper presents the offshore wind resource assessment and an offshore wind power plant optimization in the Gulf of Thailand (GoT). The Weather Research and Forecasting (WRF) atmospheric model, along with the NCEP/NCAR R2 reanalysis climatic database, are applied to create wind resource maps at 80 m, 100 m, and 120 m above mean sea level (amsl) in order to identify the potential surface areas for...
Off-grid rural and remote area electrification through decentralized renewable hybrid mini-grids (HMG) has been prioritized in the recent national renewable energy policy of Bangladesh. Research was carried out to explore the actual customer willingness to pay (WTP) for the electricity to be supplied by such HMGs, while considering a wide spectrum of socioeconomic factors. Door to door household survey...
The management and disposal of livestock manure has become one of the top environmental issues at a global scale in line with the tremendous growth of poultry industry over the past decades. In this work, a potential alternative method for the disposal of chicken manure from Singapore local hen layer farms was studied. Gasification was proposed as the green technology to convert chicken manure into...
Effect of wastewater characteristics on bioenergy recovery in sewage treatment by anaerobic membrane bioreactor (AnMBR) was investigated. Based on COD removal, sludge concentration change and COD mass balance, nonionic surfactant or operation at 20–25 °C had no effect on the energy recovery with COD conversion of 72–79%. The anaerobic microbes can cope with the characteristic by releasing more SMP/EPS...
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.