A1 Journal article (refereed), original research

Thermo-ecological cost analysis of cogeneration and polygeneration energy systems - case study for thermal conversion of biomass


Publication Details
Authors: Gładysz Paweł, Saari Jussi, Czarnowska Lucyna
Publisher: Elsevier
Publication year: 2020
Language: English
Related Journal or Series Information: Renewable Energy
Volume number: 145
Start page: 1748
End page: 1760
Number of pages: 13
ISSN: 0960-1481
eISSN: 1879-0682
JUFO-Level of this publication: 2
Open Access: Not an Open Access publication

Abstract
The aim of the paper is the thermo-ecological cost analysis of
cogeneration and polygeneration energy systems. Within the paper
biomass-fired CHP plants and their integration with thermal conversion
of biomass units are investigated. In order to estimate the
environmental effects of integration, the allocation of the
thermo-ecological cost between different products is required. Some of
the allocation methods have their origins in economic cost allocation,
others in energy, emission or exergy analysis. Within this paper four
different methods are investigated: avoided production in national
energy system, avoided production in single-product processes, and
physical and exergetic allocation. When applied to cogeneration
technology, the avoided production in national energy system can give
misleading results, mainly due to the nature of the thermo-ecological
cost. In polygeneration energy systems, the avoided production in
separate processes method can also lead to wrong conclusions due to the
assumptions concerning reference efficiencies. At the end, the exergetic
allocation method is proposed as a suitable way to allocate the
thermo-ecological cost in cogeneration and polygeneration energy
systems. Additionally, positive environmental effects of integration can
be observed.

LUT Focus Areas

Last updated on 2019-21-08 at 10:58