Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1-14 |
| Number of pages | 14 |
| Journal | Future Cities and Environment |
| Volume | 4 |
| Issue number | 1 |
| Publication status | Published - 2018 |
| MoE publication type | Not Eligible |
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Keywords
- nearly zero-energy buildings
- energy matching
- renewables
- building emulation
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Composition and Operation of a Semi-Virtual Renewable Energy-based Building Emulator. / Kilpeläinen, Simo (Corresponding Author); Lu, Minyan; Cao, Sunliang; Hasan, Ala; Chen, Shuqin.
In: Future Cities and Environment, Vol. 4, No. 1, 2018, p. 1-14.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Composition and Operation of a Semi-Virtual Renewable Energy-based Building Emulator
AU - Kilpeläinen, Simo
AU - Lu, Minyan
AU - Cao, Sunliang
AU - Hasan, Ala
AU - Chen, Shuqin
PY - 2018
Y1 - 2018
N2 - This paper describes the composition and operation of a semi-virtual energy system and building emulator designed for studying hybrid grid interactions of a modern nearly-zero energy building. The system consists of a real part for energy production (PV panels and micro-wind turbine), storage (batteries and hot water storage tanks) and conversion (ground-source heat pump GSHP and electric heater) combined with a virtual part that models a single-family house in the computer simulation program TRNSYS. A Labview program is used for communication between the real and virtual parts. Measurement data from six periods selected for study between September 2015 and February 2016 are analyzed. The data indicate that during the study, the total electricity consumption was 1290 kWh, divided to 44/38/18% between household appliances, GSHP and electric heater, respectively. The local net production was 250 kWh, or 19% of the total demand. PV, which was heavily concentrated in fall, accounted for 54% of the production. Wind production was winter-centered.The electrical energy matching aspects of the system are represented with two indices: OEFe (on-site electrical energy fraction), the fraction of the building electrical demand covered by local production, and OEMe (on-site electrical energy matching), the ratio of the building’s self-consumption to the total local production. The matching capability of the energy system was found poor due to daily and seasonal mismatches between production and demand. The small net production compared to demand led to small OEFe and large OEMe values overall.
AB - This paper describes the composition and operation of a semi-virtual energy system and building emulator designed for studying hybrid grid interactions of a modern nearly-zero energy building. The system consists of a real part for energy production (PV panels and micro-wind turbine), storage (batteries and hot water storage tanks) and conversion (ground-source heat pump GSHP and electric heater) combined with a virtual part that models a single-family house in the computer simulation program TRNSYS. A Labview program is used for communication between the real and virtual parts. Measurement data from six periods selected for study between September 2015 and February 2016 are analyzed. The data indicate that during the study, the total electricity consumption was 1290 kWh, divided to 44/38/18% between household appliances, GSHP and electric heater, respectively. The local net production was 250 kWh, or 19% of the total demand. PV, which was heavily concentrated in fall, accounted for 54% of the production. Wind production was winter-centered.The electrical energy matching aspects of the system are represented with two indices: OEFe (on-site electrical energy fraction), the fraction of the building electrical demand covered by local production, and OEMe (on-site electrical energy matching), the ratio of the building’s self-consumption to the total local production. The matching capability of the energy system was found poor due to daily and seasonal mismatches between production and demand. The small net production compared to demand led to small OEFe and large OEMe values overall.
KW - nearly zero-energy buildings
KW - energy matching
KW - renewables
KW - building emulation
M3 - Article
VL - 4
SP - 1
EP - 14
JO - Future Cities and Environment
JF - Future Cities and Environment
SN - 2363-9075
IS - 1
ER -