Impact on Renewable Design Requirements of Net-Zero Carbon Buildings under Potential Future Climate Scenarios

Climate

Dongsu Kim¹  Jongho Yoon¹  Hyomun Lee¹  Heejin Cho²  PedroJ. Mago³ 

[1] Department of Architectural Engineering, Hanbat National University, Daejeon 34158, Korea;Department of Mechanical Engineering, Mississippi State University, 210 Carpenter Engineering Building, P.O. Box 9552, Mississippi State, MS 39762, USA;Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506, USA;

关键词: net-zero carbon building;    climate change;    EnergyPlus;    building energy modeling;    office building;    photovoltaics (PV);   

DOI  :  10.3390/cli9010017

来源: DOAJ

【 摘 要 】

This paper presents an analysis to foresee renewable design requirement changes of net- zero carbon buildings (NZCBs) under different scenarios of potential future climate scenarios in the U.S. Northeast and Midwest regions. A climate change model is developed in this study using the Gaussian random distribution method with monthly temperature changes over the whole Northeast and Midwest regions, which are predicted based on a high greenhouse gas (GHG) emission scenario (i.e., the representative concentration pathways (RCP) 8.5). To reflect the adoption of NZCBs potential in future, this study also considers two representative future climate scenarios in the 2050s and 2080s of climate change years in the U.S. Northeast and Midwest regions. An office prototype building model integrates with an on-site photovoltaics (PV) power generation system to evaluate NZCB performance under the climate change scenarios with an assumption of a net-metering electricity purchase agreement. Appropriate capacities of the on-site PV system needed to reach NZCB balances are determined based on the building energy consumption impacted by the simulated climate scenarios. Results from this study demonstrated the emission by electricity consumption increases as moving toward the future scenarios of up to about 25 tons of CO₂-eq (i.e., about 14% of the total CO₂-eq produced by the electricity energy source) and the PV installation capacity to offset the emission account for the electricity consumption increases significantly up to about 40 kWp (i.e., up to more than 10% of total PV installation capacities) as the different climate scenarios are applied. It is concluded that the cooling energy consumption of office building models would significantly impact GHG emission as future climate scenarios are considered. Consequently, designers of NZCBs should consider high performance cooling energy systems in their designs to reduce the renewable energy generation system capacity to achieve net-zero carbon emission goals.

【 授权许可】

Unknown