Buildings’ energy efficiency measures effect on CO2 emissions in combined heating, cooling and electricity production
| Autor: | Kimmo Lylykangas, Jarek Kurnitski, Petri Pylsy |
|---|---|
| Přispěvatelé: | Finnish Real Estate Federation, Tallinn University of Technology, Department of Civil Engineering, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Předmět: |
CO emissions
020209 energy CHP National power 02 engineering and technology 7. Clean energy law.invention Energy system law 11. Sustainability 0202 electrical engineering electronic engineering information engineering Building Production (economics) District cooling Heat pump Interconnection Renewable Energy Sustainability and the Environment business.industry Environmental economics CHC Energy efficiency Electricity generation District heating 13. Climate action Environmental science Electricity business Efficient energy use |
| Zdroj: | Renewable and Sustainable Energy Reviews |
| ISSN: | 1364-0321 |
| DOI: | 10.1016/j.rser.2020.110299 |
| Popis: | openaire: EC/H2020/856602/EU//FINEST TWINS Valid tools for building designers and building simulation professionals to evaluate transparently CO2 saving potential of energy efficiency measures are needed to achieve CO2 reduction targets. Earlier studies have pointed out existing tools' weak interconnection between buildings and energy systems and the lack of transparency. This study developed and validated a multimode district energy system model including district heating, cooling, CHP and heat pumps, and connection to a national power generation, to evaluate buildings' energy efficiency measures effect on CO2 emissions. A calculation example demonstrates how important it is to take into account an interconnection between buildings and a wider energy system. Implementation of the robust model as a calculation tool is fully reported and validated against the measured data so that it fulfilled the calibration criteria. Calculation tool overestimated regional CO2 emissions only by 3% with small variation and correlation to real data was very good. Calculation example shows that buildings’ energy efficiency measures effect on CO2 emissions was highly dependent on CO2 intensity of marginal national electricity generation and electricity import when regional CHP production exists, and existing building stock was considered. Thus, interconnection between buildings, regional energy production and national electricity generation must be taken into account if regional CHP production and district heating demand changes exist. Annual average CO2 factors failed to provide reliable results when the CO2 saving potential of energy efficiency measures was evaluated and therefore should not be used. |
| Databáze: | OpenAIRE |
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