2011 IEEE Conference on Clean Energy and Technology (CET)最新文献

Temperature program adsorption of hydrogen sulfide by NaOH-impregnated activated carbons for hot fuel gas purification 氢氧化钠浸渍活性炭对高温燃气净化硫化氢的温度程序吸附

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041502

Russamee Sitthikhankaew, Somrudee Predapitakkun, R. Kiattikomol, Sudhibhumi Pumhiran, S. Assabumrungrat, N. Laosiripojana

{"title":"Temperature program adsorption of hydrogen sulfide by NaOH-impregnated activated carbons for hot fuel gas purification","authors":"Russamee Sitthikhankaew, Somrudee Predapitakkun, R. Kiattikomol, Sudhibhumi Pumhiran, S. Assabumrungrat, N. Laosiripojana","doi":"10.1109/CET.2011.6041502","DOIUrl":"https://doi.org/10.1109/CET.2011.6041502","url":null,"abstract":"Natural gas, biogas and synthesis gas from coal gasification contain hydrogen sulfide (H2S) that is toxic and strong odorous for human. It is high corrosive for engine. Among various methods for H2S removal, the adsorption by activated carbon is known as an efficient process for low concentration H2S removal. Moreover, activated carbon is not only inexpensive but also produces from agricultural waste in Thailand. The objective of this work is for upgrading the commercial-grade activated carbon by sodium hydroxide (NaOH) impregnation and the combination of steam activation and NaOH impregnation. The aim of upgrading is to improve the performance of H2S removal from fuel gases. The commercial and NaOH-impregnated activated carbons were tested by the temperature program adsorption of H2S at 30 °C and 550 °C. The results showed that the adsorption capacities of the NaOH-impregnated activated carbons are significantly higher than the commercial activated carbon (in the range of 2–21 times higher depending on the temperature of adsorption). At high temperature of adsorption, the adsorption capacity of the NaOH-impregnated activated carbon was 30.10 mg of H2S per gram of activated carbon. It can be concluded that the upgraded activated carbons is applicable for hot fuel gas purification. The concentration of H2S comes out at the outlet gas after treatment by the upgraded materials was almost 0 ppmv, which is safe for utilizing in fuel cell system and power engine.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127120665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

FPGA-based pulse-width modulation control for single-phase multilevel inverter 基于fpga的单相多电平逆变器脉宽调制控制

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041436

W. A. Halim, N. Rahim

引用次数: 19

Industrial and adaptable components for building waste reduction 减少建筑垃圾的工业和适应性组件

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041456

N. Sadafi, M. Zain, M. Jamil

{"title":"Industrial and adaptable components for building waste reduction","authors":"N. Sadafi, M. Zain, M. Jamil","doi":"10.1109/CET.2011.6041456","DOIUrl":"https://doi.org/10.1109/CET.2011.6041456","url":null,"abstract":"One of the main concerns of environmental sustainability is to reduce the depletion of valuable materials and natural resources. To do so, construction waste management needs to be considered in the early stages of building components design and preparation. Industrial, Flexible and Demountable building system (IFD) is attempting to create more adaptable buildings while managing its end-of-life more efficiently and focusing on the long term performance of structure and materials. It will assist the main concept of sustainability by reducing material and energy consumption as well as environmental pollution. This research focuses on the development of IFD system for residential terrace house layout. Proposing a procedure to evaluate the conceptual prototype is the key concern. The procedure contains assessment according to IFD criteria and structural characteristics. ETABS software was applied for analyzing the stability and load bearing capacity of the structure. The assessments have testified to the flexibility and strength of the designed layout. Findings from this study have implications for construction industry who concern environmental sustainability as well.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Support for global warming mitigation and the use of CCS: A survey of the Malaysian public 支持减缓全球变暖和使用CCS:对马来西亚公众的调查

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041490

N.Y.G. Lai, K. H. Aw, Lee Chan Wai, E. Yap

{"title":"Support for global warming mitigation and the use of CCS: A survey of the Malaysian public","authors":"N.Y.G. Lai, K. H. Aw, Lee Chan Wai, E. Yap","doi":"10.1109/CET.2011.6041490","DOIUrl":"https://doi.org/10.1109/CET.2011.6041490","url":null,"abstract":"The 2007 Nobel Peace prize was awarded to individuals and groups that had worked hard to address the impending threat of global warming. The award partly serves to highlight to the world the urgency and importance of the global warming issue to humanity. However, questions still remain on the actual public awareness level on global warming and the available technology for its mitigation. This study focused on a Malaysian perspective on these issues. The objectives were achieved with specifically developed questionnaires for gauging the awareness and support level of the respondents. Over a thousand surveys were distributed to the general public via a mix of online and printout survey forms. The responses to the survey were encouraging. Majority of the respondents have heard of or are aware about the global warming issue. Yet, the responses show that there is still a lack of understanding on the climate change drivers. CCS technology is also a rather new mitigation technology and many are still not clear about the details on the role of the technology. It was also noted that there is much support from the respondents with regard to the need for more effort to mitigate climate change, yet there is still some reluctance to contribute in monetary forms to the additional cost required for mitigation. This survey results clearly show that there is still a need to further disseminate information and knowledge on global warming to the general public. In order to minimize confusion and to gain support, details and facts with regards to mitigation technologies should also be part of a wider public education or outreach initiative.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115200345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Simulation of integrated SEPIC converter with multiplier cell for standalone PV application 独立光伏应用中带乘法器单元的集成SEPIC变换器仿真

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041466

Suhaini Sarwan, N. Rahim

引用次数: 5

Electricity generation from anaerobic sludge and cassava wastewater subjected to pretreatment methods using microbial fuel cell 利用微生物燃料电池预处理厌氧污泥和木薯废水发电

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041448

Emmanuel Pacheco Leaño, S. Babel

{"title":"Electricity generation from anaerobic sludge and cassava wastewater subjected to pretreatment methods using microbial fuel cell","authors":"Emmanuel Pacheco Leaño, S. Babel","doi":"10.1109/CET.2011.6041448","DOIUrl":"https://doi.org/10.1109/CET.2011.6041448","url":null,"abstract":"In this study, batch production of electricity using anaerobic sludge from a beverage factory subjected to heat pretreatment at 105°C for 90 minutes was investigated. Cassava wastewater with a COD value of 32,000 mg/L subjected to pretreatment with (i) sonication and (ii) α-amylase (enzyme) was used as a substrate. Experiments were conducted in a double chamber microbial fuel cell separated by a Proton Exchange Membrane (PEM) to study the amount of electricity produced. Methylene blue was used as electron mediator while the phosphate buffer saline solution acted as electrolyte. The value of voltage (mV) and current (mA) were measured every 30 minutes during the first 24 hours and hourly measurements were performed afterwards for a total of 10 days. The power outputs were calculated based on the obtained measurements. The average maximum power output was obtained from cassava wastewater subjected to pretreatment with α-amylase and was 9861 mW as compared to untreated with 7159 mW. Apart from electricity production, the COD removal efficiency by microorganisms for cassava wastewater with α-amylase was 56% and that for untreated was 42%. Higher COD removal rate and power outputs were obtained for both pretreatment methods compared to the control. This shows that cassava wastewater can be a suitable substrate for electricity generation.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130369083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Upgrading of low-rank coal and biomass utilizing mild solvent treatment at around 350°C 利用350°C左右的温和溶剂处理对低阶煤和生物质进行改造

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041451

K. Miura, R. Ashida, Xian Li, Nakorn Worasuwannarak, J. Wannapeera

{"title":"Upgrading of low-rank coal and biomass utilizing mild solvent treatment at around 350°C","authors":"K. Miura, R. Ashida, Xian Li, Nakorn Worasuwannarak, J. Wannapeera","doi":"10.1109/CET.2011.6041451","DOIUrl":"https://doi.org/10.1109/CET.2011.6041451","url":null,"abstract":"The authors have been proposing methods to dewater, and fractionate coal by using the sequential thermal solvent extraction. They have recently showed that the degradative extraction at around 350°C using a non-polar solvent such as 1-methylnaphthalene under 10 MPa is effective to recover several fractions having similar chemical and physical properties from a wide range of low-rank coals. In this paper the applicability of the method to much lower grade carbonaceous resources is examined. Two biomasses, cellulose, lignite, a peat and four low rank coals, and mixed samples of biomass and two coals were treated by 1-methylnaphthalene at 350°C to upgrade and to fractionate the raw materials into several fractions having similar chemical and physical properties. The extracted fractions, Solubles and Deposits, were very close to each other in elemental composition, chemical structure, molecular weight distribution, pyrolysis behavior, and softening/melting behavior. Thus, the proposed degradative solvent extraction method was found to be effective to convert low grade carbonaceous resources into solid fuels having higher heating values and significantly upgraded compounds having similar chemical and physical properties.","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114351491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bidirectional three phase power converter 双向三相功率变换器

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041487

Azrita Alias, N. Rahim, M. Hussain

引用次数: 8

Carbon-capture and storage benefits: NOx reduction in O2/CO2 pulverized fuel combustion 碳捕获和储存优势:在O2/CO2粉末燃料燃烧中减少氮氧化物

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041434

R. Zailani, Hao Liu, Benard M. Gibbs

{"title":"Carbon-capture and storage benefits: NOx reduction in O2/CO2 pulverized fuel combustion","authors":"R. Zailani, Hao Liu, Benard M. Gibbs","doi":"10.1109/CET.2011.6041434","DOIUrl":"https://doi.org/10.1109/CET.2011.6041434","url":null,"abstract":"Fuel combustion in a mixture of O<inf>2</inf>/CO<inf>2</inf>-recycled is an emerging technology for cost-effective power generation with carbon capture and sequestration that has extra benefits of NO<inf>x</inf> emission reductions and lower flue gas cleanup cost. This paper presents experimental results of pulverized coal combustion in a 20 kW furnace on combustion in air and O<inf>2</inf>/CO<inf>2</inf> mixtures. The effectiveness of oxidant staging on reducing NO<inf>x</inf> emissions was investigated for combustion in O<inf>2</inf>/CO<inf>2</inf> mixtures in comparison to that in air combustion. The fate of recycled NO<inf>x</inf> in combustion with various oxidants and combustion conditions was also investigated. The results show that simply replacing the N<inf>2</inf> in the combustion air with CO<inf>2</inf> will result in a significant decrease of combustion gas temperatures. However, with a same firing rate and combustion stoichiometry, coal combustion in 30∶70-O<inf>2</inf>/CO<inf>2</inf> produced a similar flame temperature profiles to those in air combustion, while producing a significantly lower furnace NO<inf>x</inf> emission and a higher char burnout. The staged combustion tests show that oxidant-staging is a very effective method in reducing NO<inf>x</inf> emissions for coal combustion in 30∶70-O<inf>2</inf>/CO<inf>2</inf>, and can be more effective than in staged-air combustion. The recycled NO<inf>x</inf> tests results show that the reduction efficiency of the recycled NO depends on the combustion media, combustion conditions and NO<inf>x</inf> recycling injection locations, and is influenced by the coal properties but not by the recycled NO<inf>x</inf> concentrations. Compared to those in air combustion, NO<inf>x</inf> reduction efficiency in 30∶70-O<inf>2</inf>:CO<inf>2</inf> is more sensitive to coal properties, particularly the coal fuel ratio","PeriodicalId":360345,"journal":{"name":"2011 IEEE Conference on Clean Energy and Technology (CET)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131983800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of solar energy and present policies in Malaysia 马来西亚太阳能发展现状及政策

2011 IEEE Conference on Clean Energy and Technology (CET) Pub Date : 2011-06-27 DOI: 10.1109/CET.2011.6041447

K. H. Solangi, T. Lwin, N. Rahim, M. S. Hossain, R. Saidur, H. Fayaz

引用次数: 26