tailieunhanh - Renewable Energy Technologies for Rural Development

This paper focuses primarily on application considerations for topping cogeneration cycles. For comparative purposes Figure 1 illustrates energy utilization effectiveness (the percent of total energy output from the cycle which is useful heat and/or power) for a typical non-reheat coal- fired utility/industrial plant configuration (three-stage feed water heating with steam conditions of 1450 psig / 950°F [101 bar / 510°C] steam conditions vs. a cogeneration facility utilizing the same fired boiler but with a non-condensing steam turbine generator that supplies steam to process. This diagram suggests that relative to the typical coal-fired power generation application (as previously defined) the energy utilization associated with an equivalent cycle with cogeneration can be improved by. | UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT Renewable Energy Technologies for Rural Development UNCTAD Current Studies on Science Technology and Innovation. N 1 UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT UNCTAD Current Studies on Science Technology and Innovation Rural Development UNITED NATIONS New York and Geneva 2010 UNCTAD Current Studies on Science Technologyand Innovation. Notes The United Nations Conference on Trade and Development UNCTAD serves as the lead entity within the United Nations Secretariat for matters related to science and technology as part of its work on the integrated treatment of trade and development investment and finance. The current work programme of UNCTAD is based on the mandates set at UNCTAD XII held in 2008 in Accra Ghana as well as on the decisions by the United Nations Commission on Science and Technology for Development CSTD which is served by the UNCTAD secretariat. UNCTAD s work programme is built on its three pillars of research analysis consensus-building and technical cooperation and is carried out through intergovernmental deliberations research and analysis technical assistance activities seminars workshops and conferences. This series of publications seeks to contribute to exploring current issues in science technology and innovation with particular emphasis on their impact on developing countries. The term country as used in this study also refers as appropriate to territories or areas the designations employed and the presentation of the material do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country territory city or area or of its authorities or concerning the delineation of its frontiers or boundaries. In addition the designations of country groups are intended solely for statistical or analytical convenience and do not necessarily express a judgement about the stage of development reached by a .

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