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Browsing University of Hertfordshire by Author "Wu, Hongwei"
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Advanced thermal management system driven by phase change materials for power lithium-ion batteries: A review
Zhang, Jiangyun; Shao, Dan; Jiang, Liqin; Zhang, Guoqing; Wu, Hongwei; Day, Rodney; Jiang, Wenzhao (2022-05-01)Power lithium-ion batteries are widely utilized in electric vehicles (EVs) and hybrid electric vehicles (HEVs) for their high energy densities and long service-life. However, thermal safety problems mainly resulting from ... -
Air Quality Control in Mine Refuge Chamber with Ventilation through Pressure Air Pipeline
Zhang, Zujing; Wu, Hongwei; Wang, Kequan; Day, Rodney; Yuan, Yanping (2019-12-20)A combined experimental and numerical study was performed to improve the performance of the ventilation system in a mine refuge chamber (MRC). In the experiment, CO2 cylinders and dispersion pipes were used to simulate the ... -
Aircraft Ice Accretion Prediction Using Neural Network and Wavelet Packet Transform
Chang, S; Leng, M; Wu, Hongwei; Thompson, J.M. (2016-01-04)Purpose – The purpose of this paper is to present a new technique based on the combination of wavelet packet transform (WPT) and artificial neural networks (ANNs) for predicting the ice accretion on the surface of an ... -
Analysis and Simulation of Continuous Food Frying Processes
Wu, Hongwei; Tassou, S.A.; Karayiannis, T.G.; Jouhara, H (2013-05-02)Frying is a very energy intensive process as it invariably involves the evaporation of significant quantities of water from the food product. The process is also complex to control due to the variability of raw materials, ... -
Analysis of the influence of outdoor surface heat flux on the inlet water and the exhaust air temperature of the wetting pad of a direct evaporative cooling system
M.C., Ndukwu; Imagwuike Ibeh, Mathew; Edem Akpan, Godwin; Elijah, Ugwu; Akuwueke, Leonard; Oriaku, Linus; Ihediwa, Victor.E.; F. I., Abam; Wu, Hongwei; Kalu, C.A.; Edet Ben, Augustine; Mbanasor, Jude (2023-03-01)The study investigates the interconnectivity between the inlet water temperature, wind flow rate, and storage water heat flux with the performance of biomass wetting pads in direct evaporative cooling under the external ... -
Combustion and Exhaust Emission Characteristics of Low Swirl Injector
Deng, Y; Wu, Hongwei; Su, F (2017-01-05)The present experimental study aims to investigate the combustion and emission characteristics of the flow through a low swirl injector (LSI). An experimental study was carried out on the flame structure, the temperature ... -
Comparative experimental evaluation and thermodynamic analysis of the possibility of using degraded C15-C50 crankcase oil waste as thermal storage materials in solar drying systems
M, Ndukwu; Ben, Augustine; Lamrani, B; Wu, Hongwei; Bennamoun, L; Abam, F (2022-07-01)The study presents a comparative thermodynamic analysis of degraded C15-C50 grade crankcase oil (DCO) and paraffin thermal storage (PTS) as heat storage materials in solar drying. The goal is to convert DCO from waste to ... -
A comparison of the drying kinetics, energy consumption and colour quality of drying medicinal 1 leaves in direct-solar dryer with different colours of collector cover
M. Chinenye, Ndukwu; Akpan, Godwin; N. Okeahialam, Azubuike; D. Umoh, John; A. Ubuoh, Emmanuel; G. Benjamine, Uchechukwu; Nwachukwu, Chris; A. Kalu, Confidence; Mbanasor, Jude; Wu, Hongwei (2023-11-30)In some countries, Neem and Bitter leaves are often offered as dried medicinal leaves and one of the appealing aspects to consumers is that they retain their original colour after drying. Hence, the purpose of this study ... -
Coupled Cooling Method and Application of Latent Heat Thermal Energy Storage Combined with Pre-cooling of Envelope: Method and Model development
Yuan, Y; Gao, X; Wu, Hongwei; Zhang, Z; Cao, X; Yu, N; Sun, Liangliang (2017-01-15)The traditional cooling methods cannot meet the requirements of safety, stability, reliability and no-power at the same time under some special circumstances. In this study, a new coupled cooling method of Latent Heat ... -
Coupled Cooling Method and Application of Latent Heat Thermal Energy Storage Combined with Pre-cooling of Envelope: Optimization of Pre-cooling with Intermittent Mode
Gao, Xiangkui; Yuan, Yanping; Wu, Hongwei; Cao, Xiaoling; Zhao, Xudong (2018-04-01)The coupled cooling method combining latent heat thermal energy storage and pre-cooling of the envelope (PE) is a new free-cooling method that is suitable for exposure to high temperatures and other types of harsh environments. ... -
Coupled Cooling Method and Application of Latent Heat Thermal Energy Storage Combined with Pre-cooling of Envelope: Sensitivity Analysis and Optimization
Gao, Xiangkui; Yuan, Yanping; Cao, Xiaoling; Wu, Hongwei; Zhao, Xudong (2017-04-01)Cooling system for mine refuge chamber provides comfortable environment for miners to avoid heat damage. The existing cooling systems have their own application scopes and limitations. The coupled cooling method of Latent ... -
A data driven deep neural network model for predicting boiling heat transfer in helical coils under high gravity
Liang, Xing; Xie, Yongqi; Day, Rodney; Meng, Xianhai; Wu, Hongwei (2021-02-01)In this article, a deep artificial neural network (ANN) model has been proposed to predict the boiling heat transfer in helical coils under high gravity conditions, which is compared with experimental data. A test rig is ... -
Development of a New Factor for Hot Gas Ingestion Through Rim Seal
Liu, D; Tao, Z; Luo, X; Wu, Hongwei; Yu, X (2015-12-04)This article presents a further investigation on the mechanism of hot gas ingestion by exploring the ingress with complicated cavity generated by the rotor-mounted cylinder protrusion. During the experiment, a cavity with ... -
Diameter effect on the heat transfer of supercritical hydrocarbon fuel in horizontal tubes under turbulent conditions
Cheng, Zeyuan; Tao, Zhi; Zhu, Jianqin; Wu, Hongwei (2018-04-01)This article presented a numerical investigation of supercritical heat transfer of the hydrocarbon fuel in a series of horizontal tubes with different diameters. The Reynolds averaging equations of mass, momentum and energy ... -
Dynamic simulation of steam generation system in solar tower power plant
Zhang, Qiang; Wang, Zhiming; Du, Xiaoze; Yu, Gang; Wu, Hongwei (2019-05-01)Concentrated solar power (CSP) plant with thermal energy storage can be operated as a peak load regulation plant. The steam generation system (SGS) is the central hub between the heat transfer fluid and the working fluid, ... -
Eco-Thermal analysis and response surface optimization of the drying rate of potato slices in a mix-mode solar dryer
D.I, Onyenwigwi; Ndukwu, M.C.; Abam, F.I.; Mathew, Ibeh; Elijah, Ugwu; Wu, Hongwei; Cyprian, Dirioha; Bennamoun, Lyes (2023-01-28)This research aims to establish the interconnectivity between mix-mode solar dryer designs with carbon and energy cost mitigation using different energy scenarios and study the drying kinetics to obtain the optimal drying ... -
Effect of Different Inlet/Outlet Port Configurations on the Thermal Management of Prismatic Li-ion Batteries
Singh, Gurjeet; Wu, Hongwei (2022-11-30)The performance and life cycle of Li-ion batteries are governed by the maximum temperature and uniformity of temperature distribution in the battery pack and an efficient thermal management system is highly desired to keep ... -
Effects of Cryogenic Treatment after Annealing of Ti-6Al-4V Alloy Sheet on Its Formability at Room Temperature
Hu, Zhiqing; Zheng, Huihui; Liu, Guojun; Wu, Hongwei (2018-04-24)In this article, the effects of cryogenic treatment after annealing on the formability of Ti-6Al-4V alloy sheet were experimentally studied. The Ti-6Al-4V titanium alloy was treated by cryogenic treatment after annealing ... -
Energy and exergy analysis of solar dryer with triple air passage direction collector powered by a wind generator
Ndukwu, Macmanus; Okon, Bassey; Abam, Fidelis; Lamrani, Billal; Bekkioui, Naoual; Wu, Hongwei; Bennamoun, Lyes; Egwu, Uchenna; Ezewuisi, Chinemerem; Ndukwe, Chibueze; Nwachukwu, Chris; Ehiem, James (2022-05-26)The objective of this study is to thermodynamically investigate the performance of solar dryers by delaying the airflow in the collector. For this reason, a triple air path on a single pass collector with the fan powered ... -
Energy Separation for Ranque-Hilsch Vortex Tube: A short review
Hu, Zhuohuan; Li, Rui; Yang, Xin; Yang, Mo; Day, Rodney; Wu, Hongwei (2020-10-01)In this article, the development of the energy separation for the vortex tube has been briefly reviewed. This review mainly focuses on three aspects, they are the energy separation principle, the design criteria of vortex ...