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Photocatalytic degradation of dye effluent by titanium dioxide pillar pellets in aqueous solution

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Journal of Environmental Sciences 2004年第3期16卷 375-379页

作者： eric hu School of Engineering and Technology

Photocatalytic oxidation(PCO) process is an effective way to deal with organic pollutants in wastewater which could be difficult to be degraded by conventional biological treatment methods. Normally the TiO 2 powder in nanometre size range was directly used as photocatalyst for dye degradation in wastewater. However the titanium dioxide powder was arduous to be recovered from the solution after treatment. In this application, a new form of TiO 2(i. e. pillar pellets ranging from 2 5 to 5 3 mm long and with a diameter of 3 7 mm) was used and investigated for photocatalytic degradation of textile dye effluent. A test system was built with a flat plate reactor(FPR) and UV light source(blacklight and solar simulator as light source respectively) for investigating the effectiveness of the new form of TiO 2. It was found that the photocatalytic process under this configuration could efficiently remove colours from textile dyeing effluent. Comparing with the TiO 2 powder, the pellet was very easy to recovered from the treated solution and can be reused in multiple times without the significant change on the photocatalytic property. The results also showed that to achieve the same photocatalytic performance, the FPR area by pellets was about 91% smaller than required by TiO 2 powder. At least TiO 2 pellet could be used as an alternative form of photocatalyst in applications for textile effluent treatment process, also other wastewater treatment processes.

关键词： dyes degradation photocatalytic reactions TiO 2 catalyst

Optimization Potentials for the Waste Heat Recovery of a Gas-Steam Combined Cycle Power Plant Based on Absorption Heat Pump

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Journal of Thermal Science 2019年第2期28卷 283-293页

作者： ZHANG Hongsheng ZHAO Hongbin LI Zhenlin hu eric College of Machinery and Transportation Engineering China University of Petroleum School of Mechanical Engineering the University of Adelaide Beijing Key Laboratory of Process Fluid Filtration and Separation

A new waste heat recovery system is presented to recover exhausted steam waste heat from the steam turbine by absorption heat pump(AHP) in a gas-steam combined cycle(GSCC) power plant. The system can decrease energy consumption and further improve the energy utilization. The performance evaluation criteria are calculated, and exergy analysis for key components are implemented in terms of the energy and exergy analysis theory. Besides, the change of these criteria is also revealed before and after modification. The net power output approximately increases by 21738 kW, and equivalent coal consumption decreases by 5.58 g/kWh. A 1.81% and 1.92% increase in the thermal and exergy efficiency is respectively obtained in the new integrated system as the heating load is 401095 kJ at 100% condition. Meanwhile, the appropriate extraction parameters for heating have been also analyzed in the two systems. The proposed scheme can not only save energy consumption but also reduce emission and gain great economic benefit, which is proven to be a huge potential for practical application.

关键词： combined cycle power plant absorption heat pump waste heat recovery evaluation criteria exergy analysis

Effects of pH on rheological characteristics and stability of petroleum coke water slurry

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Petroleum Science 2016年第4期13卷 782-787页

作者： Fu-Yan Gao eric-J.hu Ningbo Institute of Technology Zhejiang University School of Mechanical Engineering University of Adelaide

In this study, the effects of pH on slurrying properties of petroleum coke water slurry（PCWS） were investigated. The slurrying concentration, rheological characteristics and stability of PCWS were studied with four different types of additives at pH varying from 5 to *** results showed that the slurrying concentration, rheological characteristics and stability of PCWS all increased at first and then decreased with increasing pH from 5 to 11,and a pH of around 9 was found to be the most favorable acid–alkali environment to all these three slurrying properties. It was also indicated that only in a moderate alkaline environment can the additives be active enough to react with particle surfaces sufficiently to obtain good slurrying concentration and form a stable three-dimensional network structure, which can support strong pseudoplastic characteristics and good stability. An acid environment was a very unfavorable factor to the slurrying properties of PCWS.

关键词： Petroleum coke Petroleum coke water slurry pH Slurrying concentration Rheological characteristics Stability

Inherent relations between yield stress and stability of bubble petroleum coke water slurry

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Petroleum Science 2018年第1期15卷 157-163页

作者： Fu-Yan Gao eric J.hu Ningbo Institute of Technology Zhejiang University School of Mechanical Engineering The University of Adelaide

The stability of petroleum coke water slurry（PCWS） is currently a hot topic. The inherent relationship between yield stress and stability of bubble-PCWS was studied through orthogonal experiments and range analysis in this work. The results showed that the stability of bubble-PCWS was positively related to the yield stress and that the yield stress could be greatly impacted by the operation conditions during preparation of bubble-PCWS. The main factors affecting the yield stress of bubble-PCWS were solid concentration, aeration time and dosage of frother. However, the effects of aperture size of air distribution plates and type of frother on the yield stress were slight within the experimental range. The optimal conditions for the greatest yield stress were as follows： aeration time of 30 min, solid concentration of 65 wt%, frother dosage of0.030 wt% of the air-dried pulverized petroleum coke, aperture size of air distribution plate of 2-5 lm and AOS *** yield stress and the pour rate of bubble-PCWS under this optimum operation condition could reach maxima of more than 0.4 Pa and 96%, respectively.

关键词： Petroleum coke Petroleum coke water slurry (PCWS) Stability Yield stress Orthogonal experiment

IDMI Analysis of Regional Low-Carbon Development Based on System Dynamic Simulation

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Transactions of Tianjin University 2013年第5期19卷 338-344页

作者：贺媛媛 hu eric 谭欣 School of Environmental Science and Technology Tianjin University School of Mechanical Engineering University of Adelaide

During the decision-making process, especially in multi-disciplinary complex cases, assessment technique is needed to assist policy-makers in making the right decision. Many of such assessment techniques have been developed for policy-makers, but the inevitable subjectivity of policy-makers often becomes the main obstacle in making the right or proper policy. Interlink decision-making index （IDMI） is a newly proposed assessment method with the advantages of being simple to use and having less human interference over other methods, as it does not require a weighting process of each selection criterion. This paper implements IDMI to assist with decision-making in national or regional low-carbon development, using China as a case study. The Chinese government has annotmced its carbon emission reduction target along with other development targets by 2020. Many policy settings can be chosen in order to achieve those targets. The problem is how to determine the best setting and the means by which decision-makers can avoid subjectivity and extremes. A number of policy setting options are generated carefully by a system dynamic model under different policy scenarios. The IDMI demonstrates a perfect way to assist in selecting the ＂best＂ among all the options that can achieve the goals within the acceptable range.

关键词： IDMI decision-making low-carboneconomy system dynamics

Solar aided power generation:A review

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能源与人工环境(英文) 2020年第1期1卷 11-26页

作者： Jiyun Qin eric hu Xiaohua Li China Institute of FTZ Supply Chain Shanghai Maritime UniversityShanghai 201306 China School of Mechanical Engineering the University of AdelaideSA 5005 Australia Department of Building Engineering Hunan Institute of Engineering411104 HunanChina

Solar Aided Power Generation(SAPG)is the most efficient and economic ways to hybridise solar thermal energy and a fossil fuel fired regenerative Rankine cycle(RRC)power plant for power generation *** such an SAPG plant,the solar thermal energy is used to displace the extraction steam by preheating the feedwater to the *** displaced/saved extraction steam can,therefore,expand further in the steam turbine to generate *** research and development of the SAPG technology started in the *** paper is trying to reviews and summarises the progress of research and development of the SAPG plant technology in last almost 30 or so years,including the technical and economic advantages of SAPG over other solar thermal power generation tech-nologies(*** alone power generation),various modelling techniques used to simulate SAPG perforamnce,impacts of SAPG plant’s configuration,size of solar field and strategies to adjust mass flow rate of extraction steam on the plant perforamnce,exergy analysis of SAPG plant and operation strategies to maximise plant’s economic returns *** addition,the directions for future R&D about SAPG technology have been pointed/proposed in this paper.

关键词： Solar thermal power system Hybrid power system Solar preheating Solar Aided Power Generation

Performance analysis of a solar-aided power generation(SAPG) plant using specific consumption theory

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Science China(Technological Sciences) 2016年第2期59卷 322-329页

作者： HOU HongJuan WANG MengJiao YANG YongPing CHEN Si hu eric National Thermal Power Engineering and Technology Research Center North China Electric Power University University of Kentucky Power and Energy Institute of Kentucky School of Mechanical Engineering University of Adelaide

In contrast to a traditional coal-fired power generation plant where steam extracted from a turbine is used to preheat the feedwater in all preheating stages, a solar-aided power generation(SAPG) plant uses solar heat to replace a part or all of the extracted steam in one or more preheating stages. The performance of an SAPG plant with different replacements is investigated in this study by using specific consumption theory(SCT). Fuel-specific and cost-specific consumption models for SAPG plants are built based on the SCT. A typical 330 MW coal-fired power plant is used as the study case. The performance of the SAPG plant in terms of specific consumption, with steam obtained from the first through the eighth(except for the fourth) stages of extraction replaced by solar heat, is compared with that of the reference coal-fired power plant. The fuel-specific consumption of the SAPG plant is determined to be lower than that of the reference coal-fired power plant. The fuel-specific consumption accrual distribution in SAPG plants is used to assess the effect of each individual replacement. Effective strategies to reduce the specific costs of the SAPG and coal-fired power plants are proposed based on the results of this study.

关键词： solar-aided power generation specific consumption theory fuel-specific consumption cost-specific consumption

Evaluation of solar aided biomass power generation systems with parabolic trough field

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Science China(Technological Sciences) 2011年第6期54卷 1455-1461页

作者： HOU HongJuan YANG YongPing hu eric SONG JiFeng DONG ChangQing MAO Jian Beijing Key Laboratory of Safe and Clean Energy Technology North China Electric Power University Beijing 102206 China National Engineering Laboratory for Biomass Power Generation Equipment North China Electric Power University Beijing 102206 China School of Mechanical Engineering The University of Adelaide SA 5005 Australia

Solar and biomass are both renewable energy *** biomass as fuel is becoming more and more attractive after governments increase the tariff for the electricity from the renewable *** the costs of power from a biomass power generation plant depend greatly on the availability and quality of the biomass *** commercialization of solar alone thermal power generation is hindered by its high initial investment and low thermal *** this paper,a concept of integrating solar into a biomass power generation system is put *** the system the oil heated by a parabolic trough solar field is used to replace the extraction steam to preheat the feed water(entering a biomass boiler) and the previous extraction steam thus saved can continue to do work in the lower stages of *** performance of the hybrid system with different replacements is analyzed and compared through two typical solar aided biomass generating *** results show that the integration not only reduces the consumption of biomass fuel(at the same generation capacity) but is also proved to be an efficient way to convert solar thermal energy into *** results also show that with the same solar aperture area,the higher the grade of the replaced extraction steam,the better the thermal performance and economy.

关键词： solar thermal power biomass power aided

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聚光光伏冷却系统的实验研究

太阳能学报 2014年第10期35卷 2030-2035页

作者：杜斌 eric hu Mohan Kolhe 东南大学能源与环境学院南京210096 Adelaide大学机械工程系伦敦大学能源与资源学院

加工聚光太阳电池组件系统及其强制水冷装置并对其进行实验研究,采集一天中该电池的温度、发电功率、效率等数据,与固定安放的太阳电池进行对比。实验结果显示,聚光太阳电池在测量时段内的输出电功率始终明显大于固定太阳电池,采用水冷... 详细信息

加工聚光太阳电池组件系统及其强制水冷装置并对其进行实验研究,采集一天中该电池的温度、发电功率、效率等数据,与固定安放的太阳电池进行对比。实验结果显示,聚光太阳电池在测量时段内的输出电功率始终明显大于固定太阳电池,采用水冷的聚光太阳电池的温度基本在60℃以下,此外,还分析冷却水流量对聚光太阳电池热效率和电效率的影响。

关键词：太阳能聚光太阳电池水冷效率