Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 544-559 |
| Number of pages | 16 |
| Journal | Energy |
| Volume | 130 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- zero-energy buildings
- prosumers
- exergy balance
- hybrid grids
- cost optimality
- thermoeconomic analysis
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Thermoeconomic analysis of heat and electricity prosumers in residential zero-energy buildings in Finland. / Manrique Delgado, Benjamin (Corresponding Author); Cao, Sunliang; Hasan, Ala; Sirén, Kai.
In: Energy, Vol. 130, 01.01.2017, p. 544-559.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Thermoeconomic analysis of heat and electricity prosumers in residential zero-energy buildings in Finland
AU - Manrique Delgado, Benjamin
AU - Cao, Sunliang
AU - Hasan, Ala
AU - Sirén, Kai
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Energy planning and management in the built environment should not limit their scope to reaching zero-energy or nearly zero-energy balances: they should aim for cost optimality as well. Only then can environmental and economic sustainability be attained. In this study, a set of energy systems that include exchange with electrical and heating grids are proposed for an existing single-family house in Finland. The simulated energy and exergy balances are quantified, as well as the levelized cost of electricity and levelized cost of heat, the simple payback period and the internal rate of return of the investment. By driving a heat pump to convert surplus electricity into heat and exporting it, an annual energy surplus of 36 kWh/m2/a is achievable, whereas by importing heat from a heating grid leads to an annual exergy surplus of 8 kWh/m2/a. However, the economic indicators are unattractive: the lowest levelized cost of electricity and simple payback period are 41 cent/kWh and 46 years respectively, while the highest internal rate of return is 3.2%. Thus, the results indicate that reaching zero-energy balances in a cost-effective manner in single-family house under the current conditions in Finland is an arduous endeavour.
AB - Energy planning and management in the built environment should not limit their scope to reaching zero-energy or nearly zero-energy balances: they should aim for cost optimality as well. Only then can environmental and economic sustainability be attained. In this study, a set of energy systems that include exchange with electrical and heating grids are proposed for an existing single-family house in Finland. The simulated energy and exergy balances are quantified, as well as the levelized cost of electricity and levelized cost of heat, the simple payback period and the internal rate of return of the investment. By driving a heat pump to convert surplus electricity into heat and exporting it, an annual energy surplus of 36 kWh/m2/a is achievable, whereas by importing heat from a heating grid leads to an annual exergy surplus of 8 kWh/m2/a. However, the economic indicators are unattractive: the lowest levelized cost of electricity and simple payback period are 41 cent/kWh and 46 years respectively, while the highest internal rate of return is 3.2%. Thus, the results indicate that reaching zero-energy balances in a cost-effective manner in single-family house under the current conditions in Finland is an arduous endeavour.
KW - zero-energy buildings
KW - prosumers
KW - exergy balance
KW - hybrid grids
KW - cost optimality
KW - thermoeconomic analysis
UR - http://www.scopus.com/inward/record.url?scp=85019147127&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2017.04.158
DO - 10.1016/j.energy.2017.04.158
M3 - Article
VL - 130
SP - 544
EP - 559
JO - Energy
JF - Energy
SN - 0360-5442
ER -