Results 31 to 40 of about 3,866 (217)

State of charge estimation of ultracapacitor based on forgetting factor recursive least square and extended Kalman filter algorithm at full temperature range

Heliyon, 2022
State of charge (SOC) of ultracapacitor plays an important role in the energy management optimization of hybrid energy storage system for electric vehicles.
Jing Ren, Yonghong Xu, Hongguang Zhang, Fubin Yang, Yifang Yang, Xu Wang, Peng Jin, Denggao Huang   +7 more
doaj   +1 more source

Elman and back propagation neural networks based working fluid side energy level analysis of shell-and-tube evaporator in organic Rankine cycle (ORC) system

Alexandria Engineering Journal, 2022
As the heat exchange component of the organic Rankine cycle (ORC) system, the evaporator directly affects the overall operation performance of the system.
Xu Ping, Fubin Yang, Hongguang Zhang, Jian Zhang, Wujie Zhang   +4 more
doaj   +1 more source

Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell

Energies, 2016
Knowledge concerning the complicated changes of mass and heat transfer is desired to improve the performance and durability of unitized regenerative fuel cells (URFCs).
Hong Xiao, Hang Guo, Fang Ye, Chongfang Ma   +3 more
doaj   +1 more source

Comparisons of the Uncoupled Effects of CO₂ on the CH₄/O₂ Counterflow Diffusion Flame under High Pressure

Applied Sciences, 2021
A comprehensive numerical investigation of the uncoupled chemical, thermal, and transport effects of CO2 on the temperature of CH4/O2 counterflow diffusion flame under high pressure up to 5 atm was conducted.
Ying Chen, Jingfu Wang, Xiaolei Zhang, Conghao Li   +3 more
doaj   +1 more source

The Effects of CO₂ Additional on Flame Characteristics in the CH₄/N₂/O₂ Counterflow Diffusion Flame

Molecules, 2021
The effects (chemical, thermal, transport, and radiative) of CO2 added to the fuel side and oxidizer side on the flame temperature and the position of the flame front in a one-dimensional laminar counterflow diffusion flame of methane/N2/O2 were studied.
Ying Chen, Jingfu Wang, Xiaolei Zhang, Conghao Li   +3 more
doaj   +1 more source

Zeotropic Mixture Selection for an Organic Rankine Cycle Using a Single Screw Expander

Energies, 2020
The organic Rankine cycle (ORC) is a popular and promising technology that has been widely studied and adopted in renewable and sustainable energy utilization and low-grade waste heat recovery.
Xinxin Zhang, Yin Zhang, Zhenlei Li, Jingfu Wang, Yuting Wu, Chongfang Ma   +5 more
doaj   +1 more source

Performance evaluation and optimization guidance for steam generating heat pumps with significant temperature lift

Case Studies in Thermal Engineering
Steam generating heat pumps (SGHPs) offer a promising alternative to coal-fired boilers. To address the lack of general optimization strategy of autocascade SGHP (ASGHP) for variable operating conditions and variable cycle configurations, this paper ...
Xudong Ma, Yanjun Du, Yuting Wu, Biao Lei, Cancan Zhang   +4 more
doaj   +1 more source

Experimental Study of Frost Crystals Dendrite Growth on Two Neighboring Separate Frozen Water Drops on a Cryogenic Cold Surface under Natural Convection Conditions

Energies, 2023
The effects of cold surface temperature, wet air state (temperature and humidity) and original drop size on frost dendrites growth of two neighboring separate frozen water drops of same size under natural convection conditions were investigated by ...
Fengjiao Yu, Zhongliang Liu, Yanxia Li, Yanling Chen, Yi Li   +4 more
doaj   +1 more source

Study on the Characteristics of Expander Power Output Used for Offsetting Pumping Work Consumption in Organic Rankine Cycles

Energies, 2014
The circulation pump in an organic Rankine cycle (ORC) increases the pressure of the liquid working fluid from low condensing pressure to high evaporating pressure, and the expander utilizes the pressure difference to generate work.
Yu-Ting Wu, Biao Lei, Chong-Fang Ma, Lei Zhao, Jing-Fu Wang, Hang Guo, Yuan-Wei Lu   +6 more
doaj   +1 more source

Preparation and characterization of an aluminum ammonium sulfate dodecahydrate-based composite phase change material with low supercooling and high thermal conductivity

Case Studies in Thermal Engineering
Aluminum ammonium sulfate dodecahydrate (AASD) is a promising hydrated salt-type phase change material. However, its application is severely hindered by its large undercooling and low thermal conductivity.
Zhansheng Fan, Yuanwei Lu, Tian Zhao, Qi Gao, Zhengyang Li, Yuting Wu   +5 more
doaj   +1 more source