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Effects of energy efficiency measures in district-heated buildings on energy supply
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). (SBER)
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). (SBER)
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). (SBER)ORCID-id: Ecotechnology
2018 (engelsk)Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 142, s. 1114-1127Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study we estimate the final and primary energy savings for different energy efficiency measures in a multi-apartment building when heated by small-, medium- or large-scale district-heat production systems (DHSs). The small-scale system is based on heat-only boilers, whereas the other two also include cogeneration of district heat and electricity. In the systems with cogeneration units, a change in building's heat demand may influence cogenerated electricity and hence the overall power system. For the building analyzed, the estimated annual total final heat and electricity savings were 136 (54%) and 30 MWh (52%), respectively, giving total annual primary energy savings of 177–289 MWh. This varies as the ratio of primary and final heat savings depends on the type of energy efficiency measure and the energy supply. For the same heat savings measure, a system with a heat-only boiler gave the highest primary energy savings, whereas a system based mostly on cogeneration of district heat and electricity in combination with averaged-efficiency standalone power plants gave the lowest primary energy savings. When the energy supply is based on energy-efficient renewable-based system, the differences in primary energy savings between large- and small-scale DHSs are minor for the same energy efficiency measure.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 142, s. 1114-1127
Emneord [en]
Energy efficiency; District-heated building; Primary energy use; District heat; Renewable energy system
HSV kategori
Forskningsprogram
Teknik, Bioenergiteknik/Energi- och Miljöteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-69549DOI: 10.1016/j.energy.2017.10.071ISI: 000424854900094Scopus ID: 2-s2.0-85038238788OAI: oai:DiVA.org:lnu-69549DiVA, id: diva2:1170465
Tilgjengelig fra: 2018-01-03 Laget: 2018-01-03 Sist oppdatert: 2019-08-29bibliografisk kontrollert

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Truong, Nguyen LeDodoo, AmbroseGustavsson, Leif

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