903 resultados para Households -- Economic aspects -- Indonesia -- Lombok (Island)


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Fuel cells are electrochemical energy conversion devices that convert fuel and oxidant electrochemically into electrical energy, water and heat. Compared to traditional electricity generation technologies that use combustion processes to convert fuel into heat, and then into mechanical energy, fuel cells convert the hydrogen and oxygen chemical energy into electrical energy, without intermediate conversion processes, and with higher efficiency. In order to make the fuel cells an achievable and useful technology, it is firstly necessary to develop an economic and efficient way for hydrogen production. Molecular hydrogen is always found combined with other chemical compounds in nature, so it must be isolated. In this paper, the technical, economical and ecological aspects of hydrogen production by biogas steam reforming are presented. The economic feasibility calculation was performed to evaluate how interesting the process is by analyzing the investment, operation and maintenance costs of the biogas steam reformer and the hydrogen production cost achieved the value of 0.27 US$/kWh with a payback period of 8 years. An ecological efficiency of 94.95%, which is a good ecological value, was obtained. The results obtained by these analyses showed that this type of hydrogen production is an environmentally attractive route. © 2013 Elsevier Ltd.

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This document contains a review of the implementation, in the Caribbean subregion, of the Programme of Action for the Sustainable Development of Small Island Developing States (SIDS POA). It is divided into two Parts. Part 1 sets out an overall review of the implementation experience and identifies the activities pursued, the achievements recorded, as well as the constraints that were encountered in the process. This Part also addresses some of the more general issues arising from the implementation process as the subregion and the international community, in general, sought to come to terms with the SIDS POA, in search of a more comprehensive sustainable development ethos. Part 1 also documents the operational implications of these aspects over the decade that has elapsed since the adoption of the POA. The presentation of the review findings by reference to more or less precisely defined time periods represents an attempt to chronicle the subregional experience in a manner which permits an appreciation of the evolution of the implementation process.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The present edition of the Economic Survey of Latin America and the Caribbean, annual publication that appears every year since 1948, consists of three parts and one statistical appendix. The first part of the Survey covers the main aspects of the regional economy from a sectorial and thematic perspective. Chapter 1 deals with the situation of the first half of 2002 and the prospects for the year as a whole, and it is a corrected version of what was previously published separately with the title 2002: Current Conditions and Outlook. In the second chapter the evolution of the regional economy in 2001 is analyzed. The third chapter reviews some macroeconomic subjects, specially important in the present economic context of the region. The second part contains information of the analysis of the economic performance of the 19 countries of Latin America and the Spanish-speaking Caribbean and Haiti during 2001 and early 2002. The country reports include tables and figures of the main economic indicators. The third part is dedicated to the remaining countries of the Caribbean, mainly English-speaking countries.