Optimization of emission reducing energy retrofits in Finnish apartment buildings
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Yksityiskohdat
| Alkuperäiskieli | Englanti |
|---|---|
| Otsikko | CLIMA 2019 Congress |
| Alaotsikko | Bucharest, Romania, May 26-29, 2019 |
| Kustantaja | EDP Sciences |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 13 elokuuta 2019 |
| OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisussa |
| Tapahtuma | REHVA World Congress - Bucharest, Romania Kesto: 26 toukokuuta 2019 → 29 toukokuuta 2019 |
Julkaisusarja
| Nimi | E3S Web of Conferences |
|---|---|
| Vuosikerta | 111 |
| ISSN (painettu) | 2555-0403 |
Conference
| Conference | REHVA World Congress |
|---|---|
| Maa | Romania |
| Kaupunki | Bucharest |
| Ajanjakso | 26/05/19 → 29/05/19 |
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.