Characterization and Planning of Distributed Multi-Generation: Energy Models & Analyses - Hardcover

Hardcover

ISBN 10: 1604566884 ISBN 13: 9781604566888

Publisher: Nova Science Publishers Inc, 2008

Synopsis

The recent development of distributed generation technologies is changing the focus of the production of electricity from large centralised power plants to local energy systems scattered over the territory. Under the distributed generation paradigm, the present research scenario emphasises more and more the role of solutions aimed at improving the energy generation efficiency and thus the sustainability of the overall energy sector. In particular, coupling local cogeneration systems to various typologies of chillers and heat pumps allows setting up distributed multi-generation systems for combined production of different energy vectors such as electricity, heat (at different enthalpy levels), cooling power, and so forth. The generation of the final demand energy outputs close to the users enables reducing the losses occurring in the energy chain conversion and distribution, as well as enhancing the overall generation efficiency. This book presents a comprehensive introduction to energy planning and performance assessment of energy systems within the so-called Distributed Multi-Generation (DMG) framework. Typical plant schemes and components are illustrated and modelled, with special focus on applications for trigeneration of electricity, heat and cooling power. A general approach to characterisation and planning of multi-generation systems is formulated in terms of the so-called lambda analysis, which extends the classical models related to the heat-to-power cogeneration ratio analysis in cogeneration plants. A unified theoretical framework leading to synthesise different performance assessment techniques is described in details. In particular, different indicators are presented for evaluating the potential energy benefits of distributed multi-generation systems with respect to classical case of separate production and centralised energy systems. Several case study applications are illustrated to exemplify the models presented and to point out some numerical aspects relevant to equipment available on the market. In particular, schemes with different cogeneration prime mover typologies, as well as electric, absorption and engine-driven chillers and heat pumps, are discussed and evaluated. A number of openings towards modelling and evaluation of environmental and economic issues are also provided. The aspects analysed highlight the prominent role of DMG systems towards the development of more sustainable energy scenarios.

About this title

Synopsis

This book illustrates a comprehensive approach to multi-generation system characterisation and planning. This approach is formulated in terms of the so-called lambda analysis, consisting of a unified framework to study multi-generation systems, that extends the classical models based on the analysis of the heat-to-power cogeneration ratio in cogeneration plants. In particular, the representation of the energy interactions within the multi-generation plant is summarised in terms of the transformation of a vector of original energy or cogeneration ratio values into an equivalent set of values, mathematically expressed by means of specifically defined lambda transforms. The conceptual scheme presented provides effective characterisation and modelling of the production side, the demand side and their interactions in multi-generation systems.The details of the approach presented are illustrated by reviewing the bulk of alternative schemes and equipment available on the market for setting up multi-generation plants. For each alternative, the suitable equipment models and the expressions of the relevant lambda transforms are presented.

Numerical applications are provided, referred to a multi-generation system for electrical, thermal, and cooling power production. The results highlight the potential of the lambda analysis framework and of the associated lambda transforms as an effective tool to assist the energy system planner. The availability of such a synthetic and powerful tool is of utmost importance in order to effectively cope with the increasing complexity of the future electro-energetic systems, in which the efficiency enhancement will strongly depend on the integration of the equipment for local combined production of manifold energy vectors.

Edition details

• Publisher: Nova Science Publishers Inc
• Publication date: 2008
• Language: English
• ISBN 10: 1604566884
• ISBN 13: 9781604566888
• Binding: Hardcover
• Number of pages: 264
• Editor: Chicco Gianfranco, Mancarella Pierluigi