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 novel eutectic salt of alkali nitrate/nitrite mixture with low melting point was investigated using thermal analysis methods for thermal energy storage. The eutectic salt mixture system LiNO3-NaNO3-KNO3-NaNO2-KNO2 was prepared based on eutectic composition XLiNO3 = 33.5, XNaNO3 = 1.2, XKNO3 = 1.2, XNaNO2 = 17.4 and XKNO2 = 46.7 (in mole fraction). Using Differential Scanning Calormetry (DSC) apparatus,...
Hydrothermal liquefaction (HTL) can chemically convert sewage sludge (SS) into a crude bio-oil (biocrude) and other by-products. This work systematically elucidates how the yields and compositions of different products (e.g., gases, biocrude and solids) vary with temperature (260–350 °C) in SS HTL with 10 min of residence time. The results show that increasing temperature improved the biocrude quality...
The main challenge for analysing system time-dependent performance of Compressed Air Energy Storage (CAES) is the complexity of the system dynamic characteristics arisen from the thermal, mechanical, chemical and electrical sub-processes. Identification of time-variant interactions between these sub-processes is essential to understand, optimise and control transient behaviour of CAES systems in practice...
Methanol is an alternative fuel, and considered to be one of the most favorable fuels for engines. In this study, knocking combustion in a developed ORCEM (optical rapid compression and expansion machine) is studied based on the multi-dimensional simulation analysis. The LES (large-eddy simulation) models coupled with methanol chemical reaction kinetics (contains 21-species and 84-elementary reactions)...
A novel RO seawater desalination plant powered by PV (Photovoltaic) and PRO (PVROPRO) is proposed and the feasibility of two stand-alone schemes, SSRO (salinity-solar powered RO) operation and SRO (salinity powered RO) operation, are investigated. First, the stand-alone feasibility of the plant is thermodynamically analysed. In doing so, on the basis of mathematical models describing RO, PRO and the...
SOC (state of charge) estimation provides critical information to system engineers and end users of consumer electronics to electric vehicles. The accuracy of model-based SOC estimation depends on the accuracy of the underlying model, including temperature effects that greatly influence cell dynamics. This paper uses a 7th order, linear, ESPM (electrolyte enhanced single particle model) as the basis...
A HFPE (hydraulic free-piston engine) has been proposed by the SKLE (State Key Library of Engines) in Tianjin University as a mean to significantly improving the IC (Internal Combustion) engines' cycle thermal efficiency and lowering exhaust emissions. As the piston dynamic and the cylinder structure are hardly seen in conventional engine, a 3-D (three-dimensional) CFD (computational fluid dynamics)...
The recently-built school buildings have adopted novel heat recovery ventilator and air conditioning system. Heat recovery efficiency of the heat recovery facility and energy conservation ratio of the air conditioning unit were analytically modeled, taking the ventilation networks into account. Following that, school classroom displacement ventilation and its thermal stratification and indoor air...
Methanol has been recently used as an alternative to conventional fuels for internal combustion engines in order to satisfy some environmental and economical concerns. In this paper, the ignition in a high compression ratio SI (spark ignition) methanol engine was studied by using LES (large eddy simulation) with detailed chemical kinetics. A 21-species, 84-reaction methanol mechanism was adopted to...
Methanol as an alternative fuel is considered to be one of the most favorable fuels for internal combustion engines. In this paper, knock in a high compression ratio spark-ignition (SI) methanol engine was studied by using multi-dimensional simulation. Knocking combustion under various engine operating conditions were simulated, and the effects of spark timing, EGR (Exhaust Gas Recirculation) techniques,...
To acquire the gas/particle flow characteristics of an in-assembly down-fired 600-MW e supercritical utility boiler, experiments were conducted by using particle dynamics anemometer (PDA) measurement within a two-phase small-scale model at various staged-air ratio settings (i.e., 0%, 6%, and 12%). The mean velocity, particle volume flux, and particle number concentration along several cross...
A micro steam engine is developed based on Newcomen steam engine. In the micro engine, a flexible ripple tube takes the place of piston and cylinder, to overcome the serious problems of friction and leakage in micro scale. We use two-phase octane as working fluid of the micro engine, because two-phase octane has higher power density than gaseous one. The micro engine is tested under different operational...
The recovery of condenser heat in air conditioners is attractive because of its great economy and environmental value. This work experimentally studies a modified air conditioner with a domestic hot water supply (ACDHWS) that operates in the space-cooling and water-heating mode. The working principles and the basic features of the ACDHWS are introduced in this paper. This is followed by an experimental...
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.