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Understand the three different scales for measuring primary energy and avoid errors

Lightfoot, H. Douglas - In: Energy 32 (2007) 8, pp. 1478-1483

Three quite different scales for measuring the amount of primary energy the world uses annually are currently in use. The Engineering Information Administration, the International Energy Agency and the Working Group III (WG III) of the Intergovernmental Panel on Climate Change (IPCC), each has...

Persistent link: https://www.econbiz.de/10011055585

The Divisia real energy intensity indices: Evolution and attribution of percent changes in 20 European countries from 1995 to 2010

Fernández González, P.; Landajo, M.; Presno, M.J. - In: Energy 58 (2013) C, pp. 340-349

This paper analyzes the evolution of real energy efficiency in the European Union and the attribution across countries of its percent change. Relying on a multiplicative energy intensity approach that is implemented through the Sato-Vartia Logarithmic Mean Divisia Index method, we decompose the...

Persistent link: https://www.econbiz.de/10011054862

Valuing the preferences for micro-generation of renewables by househoulds

van Putten, Marloes; Lijesen, Mark; Özel, Tanju; Vink, … - In: Energy 71 (2014) C, pp. 596-604

We study the valuation of preferences for small scale initiatives in renewable electricity generation. We analyse the results of a stated choice experiment among 507 respondents in The Netherlands and provide valuations of characteristics of small scale initiatives. Respondents prefer installing...

Persistent link: https://www.econbiz.de/10011055879

Investigating the energy-environmental Kuznets curve

Luzzati, T.; Orsini, M. - In: Energy 34 (2009) 3, pp. 291-300

This paper investigates the relationship between absolute energy consumption and gross domestic product (GDP) per capita for 113 countries over the period 1971–2004. Energy has been scarcely explored in the Environmental Kuznets curve (EKC) debate and is taken as the indicator of overall...

Persistent link: https://www.econbiz.de/10010809471

The impact of energy consumption and CO2 emission on the economic growth and financial development in the Sub Saharan African countries

Al-mulali, Usama; Sab, Binti Che; Normee, Che - In: Energy 39 (2012) 1, pp. 180-186

This study investigated the impact of energy consumption and CO2 emission on GDP (gross domestic product) growth and the financial development in thirty Sub Saharan African Countries. The panel model was used in this study from the period 1980 to 2008. The results showed that energy consumption...

Persistent link: https://www.econbiz.de/10010809718

Attribution of changes in the generalized Fisher index with application to embodied emission studies

Su, Bin; Ang, B.W. - In: Energy 69 (2014) C, pp. 778-786

The Fisher index and its extensions have been used in multiplicative decomposition analysis applied to energy and emissions. In this study, we extend the concept of “additive decomposition of the Fisher index” in the national accounts and propose an attribution analysis of the generalized...

Persistent link: https://www.econbiz.de/10011054783

Using compressor discharge air bypass to enhance power generation of a steam-injected gas turbine for combined heat and power

Kang, Do Won; Jang, Hyuck Jun; Kim, Tong Seop - In: Energy 76 (2014) C, pp. 390-399

In gas turbine combined heat and power systems, steam injection is a good way to cope with seasonal variations in electricity and heat demands. However, even though thermal energy demand decreases considerably in cooling seasons, the surplus exhaust heat cannot be fully utilized for steam...

Persistent link: https://www.econbiz.de/10010939821

Numerical investigation of impeller trimming effect on performance of an axial flow fan

Li, Chunxi; Li, Xinying; Li, Pengmin; Ye, Xuemin - In: Energy 75 (2014) C, pp. 534-548

To study the performance variations of an axial fan after impeller trimming, numerical simulations are executed under …. The effects of trimming quantity and tip clearance on flow field and performance of the axial fan are investigated, and … before and after impeller trimming. The simulated results show that the performance curves after impeller trimming tend to …

Persistent link: https://www.econbiz.de/10010931382

Combustion, performance and emission characteristics of direct injection diesel engine fueled by Jatropha hydrogen peroxide emulsion

Nguyen, Kim-Bao; Dan, Tomohisa; Asano, Ichiro - In: Energy 74 (2014) C, pp. 301-308

Recently, Jatropha, a fast growing tropical plant, has caught the attention of researchers because the oil produced from Jatropha is a non-edible. However, worse emissions, when using raw Jatropha oil in diesel engines, have been reported in the literature due to its higher viscosity and lower...

Persistent link: https://www.econbiz.de/10010931391

Numerical investigation of blade tip grooving effect on performance and dynamics of an axial flow fan

Ye, Xuemin; Li, Pengmin; Li, Chunxi; Ding, Xueliang - In: Energy 82 (2015) C, pp. 556-569

Appropriate changes to the blade tip structure can effectively improve fan performance. The performance of the OB-84 …

Persistent link: https://www.econbiz.de/10011209474

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