2014 International Conference on the Eleventh industrial and Commercial Use of Energy最新文献_第3页

Study on energy losses in industrial sector caused by low actual efficiency of induction motors 感应电动机实际效率低导致工业部门能量损失的研究

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904188

O. Dobzhanskyi, R. Gouws

引用次数: 5

A quantitative and qualitative methodology to evaluate performance improvement of a coal power plant in South Africa by the virtue of energy efficiency intervention 基于能效干预的南非燃煤电厂绩效改进的定量和定性评价方法

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904203

S. Tangwe, M. Simon, E. Meyer

{"title":"A quantitative and qualitative methodology to evaluate performance improvement of a coal power plant in South Africa by the virtue of energy efficiency intervention","authors":"S. Tangwe, M. Simon, E. Meyer","doi":"10.1109/ICUE.2014.6904203","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904203","url":null,"abstract":"The Industrial and Commercial sectors in South Africa consume more than 80% of the electricity generated by Eskom. The generation of electricity to meet the demand in these sectors is primarily derived from the coal thermal power plant. The goal of Eskom is to sustain the demand and equally reduce environmental pollution. Eskom has embarked on energy efficiency initiatives on their coal boiler plant in a bid to decrease the amount of coal burnt and in turn increase the electricity generated. The study focused on the analysis of the before and after outage data obtained from the unit cards in one of the Eskom's “once through” 600 MW coal boiler with a mechanical conversion efficiency of 35 % (from manufacturer specification). Multiple linear regression models were developed and built to predict the power generated and sent out in correlation with the predictors (average air heater temperature, average main stream super heater temperature, average high pressure heater temperature, the total mass of coal burnt, auxiliary power consumption, average of the cold well and hot well condenser temperature and pressure). The data obtained 3 months before and after an outage showed an average power generated of 434.95 MW and 502.08 MW respectively. The results also revealed that the cumulative energy gained was 44000 MWh. Finally, the reliefF algorithm ranked all predictors as primary factors with the high pressure heater and main stream super heater temperatures contributing the most by virtue of the weight of importance to the power generated.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124152300","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

A systems engineering approach to improve the M&V process of ESCos 以系统工程方法改善esco的并购过程

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904195

H. Joubert, M. Meek, F. J. V. van Rensburg

{"title":"A systems engineering approach to improve the M&V process of ESCos","authors":"H. Joubert, M. Meek, F. J. V. van Rensburg","doi":"10.1109/ICUE.2014.6904195","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904195","url":null,"abstract":"Energy Services Companies (ESCos) all over the world are currently implementing energy saving initiatives. Stakeholders in the South African energy industry still need to overcome many barriers in order to improve operational efficiency. One such barrier is incorporating independent measurement and verification (M&V) into core ESCo processes. Dedicated M&V teams provide objective and independent quantification of energy savings stemming from the implemented interventions. Despite the importance of the M&V function, the process is often neglected by ESCos. This neglect can potentially delay critical project milestones. Incorporating the M&V process into the ESCo business model introduces its own challenges. Streamlining the management of the process is important to maximise the benefits without placing additional strain on existing resources. This article investigates the workings of the M&V process and how it can be integrated into an ESCo's business processes. Operational data is collected, processed and analysed to identify critical areas. A guideline to integrating the process into the general framework of an ESCo business is then developed. The article also presents a case study where the analysis and implementation is performed on an ESCo based in South Africa. The findings of the case study underline important improvements based on measured performance indicators.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128012974","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

Underutilise waste heat as potential to generate environmental friendly energy 充分利用余热作为产生环保能源的潜力

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904208

O. L. Ayodele, M. Kahn

{"title":"Underutilise waste heat as potential to generate environmental friendly energy","authors":"O. L. Ayodele, M. Kahn","doi":"10.1109/ICUE.2014.6904208","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904208","url":null,"abstract":"The increasing interest in space exploration, satellite activities, structural health monitoring and terrestrial monitoring in harsh and inaccessible environments place a high demand for energy sources for autonomous systems. The existing battery technologies that can be utilized for autonomous systems are plagued by short-life, low energy storage density, associated unwanted maintenance burdens of recharging or replacement and disposal of unwanted batteries which poses a threat to the environment. Autonomous energy sources from waste heat for home appliances and industrial machineries will also mitigate the effect of global warming which threatens the environment as a result of fossil fuel energy based sources that release undesirable carbon-monoxide into the atmosphere. Thermoelectric energy generation, based on Seebeck effect, an innovative approach to convert heat energy into usable forms can significantly contribute towards sustainable energy development and meet the growing need for power in small scale applications due to its relative advantages over other sources of energy generation. This paper presents an insight into various ways by which underutilize waste heat can be exploited to meet the growing energy demand. While there is growing concern for generation of `clean' energy, and it is a relief that there is a large amount of underutilise or waste heat capable of generating `clean' energy.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123283541","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

The status of the LP gas industry in South Africa 南非液化石油气行业的现状

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904181

P. Lloyd

{"title":"The status of the LP gas industry in South Africa","authors":"P. Lloyd","doi":"10.1109/ICUE.2014.6904181","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904181","url":null,"abstract":"The LP gas industry in South Africa forms a small but vital part of the liquid hydrocarbon industry as a whole. About 600 000t/a is produced, against a demand of the order of 350 000t/a plus an export demand of about 150 000t/a, with the balance being consumed by the refineries themselves. Imports are slowly growing as the facilities for coastal storage are created, but these facilities are small so that the cost of imports is unduly high. There are five major wholesalers in the market, and several smaller players who have entered the scene recently. Distribution is not particularly efficient, and the product effectively doubles in price between the refinery gate and the retailer. There seems to be a degree of anticompetitive behaviour in the market, where companies use the need to ensure proper handling of their gas cylinders to restrict entry. The Department of Energy has long has a policy to encourage the wider use of LP gas, but the lack of supply has limited the Department's effectiveness in pursuing its policy. More widespread use is also hindered by local fire regulations, as lack of familiarity with LP gas leads to over-estimation of the hazards associated with its use. If the supply constraint were to be removed, there seems little doubt that LP gas would find wider use in South Africa.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126886530","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: 6

Business case for industrial DSM maintenance 工业DSM维护的业务案例

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904167

H. Groenewald, J. V. van Rensburg, J. Marais

引用次数: 5

New overall efficiency formula for analyzing power systems containing multiple harmonic sources 分析含多谐波源电力系统的新总效率公式

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904183

R. Negumbo, G. Atkinson-Hope

引用次数: 0

Contemporary wind generators 当代风力发电机

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904205

U. B. Akuru, M. Kamper

引用次数: 5

Why we are heading for a further power crisis 为什么我们正走向进一步的电力危机

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904198

P. Lloyd

{"title":"Why we are heading for a further power crisis","authors":"P. Lloyd","doi":"10.1109/ICUE.2014.6904198","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904198","url":null,"abstract":"The Update to the Integrated Resource Plan 2010 [IRP2010 Update] has generally been well-received. In the light of evidence that the basis for the original IRP was too rigid, the Update is far more flexible in its approach. It has examined a wider range of scenarios. It has abandoned multi-criterion decision analysis, which had been the subject of much criticism on grounds of subjectivity, in favour of developing “a proposed path of least regret, incorporating the benefits of flexibility, and identify(ing) decision trees that consider the key determinants in decisions required and the proposed solutions under different outcomes of these determinants.” However, it appears to suffer from a fatal flaw, namely that by focusing on capacity and the ability to meet the peak demand, it has overlooked the need to provide adequate energy to meet the day-to-day demands. The data provided in the Update are reinterpreted in terms of annual energy produced, and it is shown that each of the four primary scenarios which were considered leads in a drastic drop in the energy margin after 2020. Under some perfectly credible assumptions, the energy margin becomes negative in the mid-2020's. Because this is within the short-term planning horizon for the provision of power, it strongly suggests that decisions must be taken immediately to introduce at least another 500MW of generating capacity every year from 2018 to 2027. Failure to address this urgently means that our electricity supply will revert to a critical state in under ten years.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117064962","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

The impact of reducing mine chilled water supply during periods of low production 低产期减少矿山冷冻水供应的影响

2014 International Conference on the Eleventh industrial and Commercial Use of Energy Pub Date : 2014-09-22 DOI: 10.1109/ICUE.2014.6904173

W. Schoeman, A. Schutte, M. Kleingeld

{"title":"The impact of reducing mine chilled water supply during periods of low production","authors":"W. Schoeman, A. Schutte, M. Kleingeld","doi":"10.1109/ICUE.2014.6904173","DOIUrl":"https://doi.org/10.1109/ICUE.2014.6904173","url":null,"abstract":"As part of the Demand Side Management (DSM) initiative, Eskom partially funds load management and energy efficiency projects. Large industries are therefore willing participants in the Eskom funded electricity savings programme that hold benefits for all parties. One such industry is the mining sector. The refrigeration and pumping systems used in these sectors are two of the major electricity consumers. As part of DSM initiative, an electrical energy savings project was developed and implemented in the deep mines' chilled water systems. The chilled water system is optimally controlled to reduce underground water usage during certain periods of the day. This ensures that less water is pumped out by the dewatering system, reducing electrical energy usage on the pumps. The study showed that there are positive and negative effects on the mining systems with reduced chilled water use. The financial and thermal impact was determined and compared to the average annual system's cooling output. In some cases the cooling system components showed a combined decrease in cooling effectiveness of 3 to 4 percent of the total average annual cooling output, but also resulted in electrical energy savings.","PeriodicalId":149169,"journal":{"name":"2014 International Conference on the Eleventh industrial and Commercial Use of Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115942115","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: 4