Article (Scientific journals)
Exergy analysis applied to performance of buildings in Europe
Sartor, Kevin; Dewallef, Pierre
2017In Energy and Buildings, 148, p. 348-354
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Keywords :
Exergy analysis; Building performance; CO2 reduction; District heating network; Heat sources
Abstract :
[en] Energy performance of buildings generally assesses the energy consumption of buildings such as heating, domestic heat water, ventilation systems, etc. However, this approach is based on the first law of thermodynamics and considers only the quantity of energy used without considering its ‘quality’ and leads to a lack of information about the energy conversion processes. This is particularly true in the new low-energy buildings where sometimes high temperatures sources are used to meet low-temperature needs. The exergy analysis of a system, based on first and second thermodynamic laws, can be used to overcome this. In this work, it is proposed to compare the energy and the exergy consumption and the related CO2 emissions of several kinds of buildings to determine the best systems in terms of energy and exergy needs. The energy demand calculations are performed using the official software available in Belgium and some assumptions are implemented to consider the exergy approach. As exergy calculations require a reference state, some different climatic conditions are also investigated. Finally, some conclusions are discussed to rank the sources of energy and their related exergy losses.
Research center :
Thermodynamics Laboratory
Disciplines :
Energy
Author, co-author :
Sartor, Kevin ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Dewallef, Pierre ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Language :
English
Title :
Exergy analysis applied to performance of buildings in Europe
Publication date :
01 August 2017
Journal title :
Energy and Buildings
ISSN :
0378-7788
eISSN :
1872-6178
Publisher :
Elsevier Science
Volume :
148
Pages :
348-354
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ULiège - Université de Liège [BE]
Commentary :
; Building performance; Exergy; CO2 reduction; Heat sources
Available on ORBi :
since 09 June 2017

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