TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Optimization of emission reducing energy retrofits in Finnish apartment buildings

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoCLIMA 2019 Congress
AlaotsikkoBucharest, Romania, May 26-29, 2019
KustantajaEDP Sciences
DOI - pysyväislinkit
TilaJulkaistu - 13 elokuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaREHVA World Congress - Bucharest, Romania
Kesto: 26 toukokuuta 201929 toukokuuta 2019

Julkaisusarja

NimiE3S Web of Conferences
Vuosikerta111
ISSN (painettu)2555-0403

Conference

ConferenceREHVA World Congress
MaaRomania
KaupunkiBucharest
Ajanjakso26/05/1929/05/19

Tiivistelmä

This study examined the cost-optimality of energy renovation on Finnish apartment buildings of different ages, built according to different energy performance requirements. Multi-objective optimization was utilized to minimize both CO2 emissions and life cycle cost (LCC). IDA-ICE simulations were performed to obtain the hourly heating demand of the buildings. Four building age classes and three heating systems (district heating, exhaust air heat pump and ground-source heat pump) were separately optimized. With district heating, it was possible to reduce emissions by 11%, while also reducing LCC. With heat pumps cost-savings could be achieved while reducing emissions by over 49%. With maximal (not cost-effective) investments, emissions could be reduced by more than 70% in all examined cases. In all cases, the cheapest solutions included solar electricity and sewage heat recovery. In old buildings, window upgrades and additional roof insulation were cost-effective. In new buildings, demand-based ventilation was included in all optimal solutions.