Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential

In the first part of this work, combined heat and power (CHP) criteria pertaining to energy, exergy, environmental (pollutant emission) and economic aspects, have been investigated and compared. Although the constraints in legislation usually refer to energy efficiency, primary energy savings and gr...

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Main Author: Marco F. Torchio
Format: Article
Language:English
Published: MDPI AG 2013-05-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/6/5/2686
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author Marco F. Torchio
author_facet Marco F. Torchio
author_sort Marco F. Torchio
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description In the first part of this work, combined heat and power (CHP) criteria pertaining to energy, exergy, environmental (pollutant emission) and economic aspects, have been investigated and compared. Although the constraints in legislation usually refer to energy efficiency, primary energy savings and greenhouse gas savings, other criteria should also be taken into account in order to obtain a better evaluation of a cogeneration plant. Here particular attention has been paid to saving indexes for both an individual CHP-unit and for a CHP-system, that is the complete system with all the cogeneration units and the auxiliary plants necessary to cover the users’ demand. Five indexes, named potential indexes, have been introduced to evaluate the cogeneration potential: one for energy saving, one for exergy, two for environmental aspects (global and local scale) and one for economic aspects. Finally, some indexes analysed in the paper have been applied to a case study concerning a district heating cogeneration system, and the different behaviour of the energy-exergy, environmental and economic aspects has been discussed.
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spelling doaj.art-eabff297d012402bbbd1f63a9cb76ece2022-12-22T02:56:37ZengMDPI AGEnergies1996-10732013-05-01652686270810.3390/en6052686Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration PotentialMarco F. TorchioIn the first part of this work, combined heat and power (CHP) criteria pertaining to energy, exergy, environmental (pollutant emission) and economic aspects, have been investigated and compared. Although the constraints in legislation usually refer to energy efficiency, primary energy savings and greenhouse gas savings, other criteria should also be taken into account in order to obtain a better evaluation of a cogeneration plant. Here particular attention has been paid to saving indexes for both an individual CHP-unit and for a CHP-system, that is the complete system with all the cogeneration units and the auxiliary plants necessary to cover the users’ demand. Five indexes, named potential indexes, have been introduced to evaluate the cogeneration potential: one for energy saving, one for exergy, two for environmental aspects (global and local scale) and one for economic aspects. Finally, some indexes analysed in the paper have been applied to a case study concerning a district heating cogeneration system, and the different behaviour of the energy-exergy, environmental and economic aspects has been discussed.http://www.mdpi.com/1996-1073/6/5/2686combined heat and power (CHP)energy indexesexergy indexesenvironmental indexeseconomic indexes
spellingShingle Marco F. Torchio
Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
Energies
combined heat and power (CHP)
energy indexes
exergy indexes
environmental indexes
economic indexes
title Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
title_full Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
title_fullStr Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
title_full_unstemmed Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
title_short Energy-Exergy, Environmental and Economic Criteria in Combined Heat and Power (CHP) Plants: Indexes for the Evaluation of the Cogeneration Potential
title_sort energy exergy environmental and economic criteria in combined heat and power chp plants indexes for the evaluation of the cogeneration potential
topic combined heat and power (CHP)
energy indexes
exergy indexes
environmental indexes
economic indexes
url http://www.mdpi.com/1996-1073/6/5/2686
work_keys_str_mv AT marcoftorchio energyexergyenvironmentalandeconomiccriteriaincombinedheatandpowerchpplantsindexesfortheevaluationofthecogenerationpotential