Thermodynamic and Economic Analysis for Simple Cogeneration Systems
DOI:
https://doi.org/10.13052/dgaej2156-3306.2534Keywords:
Cogeneration, CHP, energy efficiency, energy savings, thermody- namics, system size, operational strategy, legal restrictionsAbstract
Many countries in Europe promote cogeneration as a way to meet
energy needs in residential and commercial buildings. They do this to
save primary energy and reduce CO2 emissions. This article presents an
energy and economic analysis approach for cogeneration plants hosted
by such buildings. The plants use gas-fired internal combustion engines
as prime movers. Technical criteria to characterize annual operation for
cogeneration systems with seasonally and daily variable heat demand
are defined. The focus is on determining the total engine size or output
by considering different operational strategies. The methodology is il-
lustrated by applying it to a cogeneration plant that meets domestic
hot water and heating demand in a residential complex in Spain. The
resulting graphical analysis allows one to compare various operational
strategies.
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