Analysis of Requirements for Achieving Carbon Neutrality in a Cold Dense City Using GIS

Photovoltaics (PV) can make a significant contribution to achieving carbon neutrality in buildings. Geographic information systems (GIS) make it easy to model cities and simulate PV with high accuracy. However, the computational burden from 3D urban models remains high. In this study, the complex geometry of a city was represented in 2D images, and we propose a method for performing multiple PV simulations in a short amount of time by using these 2D images. The ratio of electricity generation to primary energy consumption (EG/E) was calculated for 415 office buildings in Sapporo, Japan, and conditions for achieving carbon neutrality in these buildings were explored. For buildings with a small gross floor area, EG/E can be higher than one, and carbon neutrality can be achieved by improving the performance of the exterior walls and windows and by increasing the area of the PV installed. However, to improve EG/E in buildings with a large gross floor area, it is necessary to consider improving the performance of the equipment used and the efficient operation of the HVAC system. The method is useful for considering ways to achieve carbon neutrality in various cities.

[1]  J. Ramousse,et al.  Evaluating the impact of urban morphology on rooftop solar radiation: a new city–scale approach based on Geneva GIS data , 2022, Energy and Buildings.

[2]  Aurora Monge-Barrio,et al.  Difficulties in the energy renovation processes of district heating buildings. Two case studies in a temperate climate , 2021 .

[3]  L. Zheng,et al.  A rapid evaluation method for design strategies of high-rise office buildings achieving nearly zero energy in Guangzhou , 2021, Journal of Building Engineering.

[4]  M. He,et al.  Energy-saving renovation of old urban buildings: A case study of Beijing , 2021, Case Studies in Thermal Engineering.

[5]  C. Morton,et al.  An investigation into zero-carbon planning policy for new-build housing , 2021, Energy Policy.

[6]  W. Agyare,et al.  Evaluation of global solar radiation, cloudiness index and sky view factor as potential indicators of Ghana's solar energy resource , 2021, Scientific African.

[7]  Yingru Zhao,et al.  Prioritizing urban planning factors on community energy performance based on GIS-informed building energy modeling , 2021 .

[8]  Emad Mushtaha,et al.  State-of-the-Art Technologies for Building-Integrated Photovoltaic Systems , 2021, Buildings.

[9]  M. Alonso-Abella,et al.  Photovoltaic generation on vertical façades in urban context from open satellite-derived solar resource data , 2021, Solar Energy.

[10]  Wei Xu,et al.  Contribution of nearly-zero energy buildings standards enforcement to achieve carbon neutral in urban area by 2060 , 2021, Advances in Climate Change Research.

[11]  Ruobing Liang,et al.  Real-Time Monitoring Implementation of PV/T façade system based on IoT , 2021 .

[12]  W. Feng,et al.  A comprehensive evaluation of zero energy buildings in cold regions: Actual performance and key technologies of cases from China, the US, and the European Union , 2021 .

[13]  N. Wong,et al.  Urban morphology and building heating energy consumption: Evidence from Harbin, a severe cold region city , 2020 .

[14]  J. Guldmann,et al.  Modeling the impact of 2D/3D urban indicators on the urban heat island over different seasons: A boosted regression tree approach. , 2020, Journal of environmental management.

[15]  Jili Zhang,et al.  A review on the application of photovoltaic thermal systems for building façades , 2020, Building Services Engineering Research and Technology.

[16]  M. Eckelman,et al.  Effect of window-to-wall ratio on measured energy consumption in US office buildings , 2019, Energy and Buildings.

[17]  Mohammadjavad Mahdavinejad,et al.  Impacts of urban morphology on reducing cooling load and increasing ventilation potential in hot-arid climate , 2018, Applied Energy.

[18]  M. Mussard.  Solar energy under cold climatic conditions: A review , 2017 .

[19]  F. Goia.  Search for the optimal window-to-wall ratio in office buildings in different European climates and the implications on total energy saving potential , 2016 .

[20]  C. Ren,et al.  Sky view factor analysis of street canyons and its implications for daytime intra‐urban air temperature differentials in high‐rise, high‐density urban areas of Hong Kong: a GIS‐based simulation approach , 2012 .

[21]  Yao Fu,et al.  Study on the Influence of Window-wall Ratio on the Energy Consumption of Nearly Zero Energy Buildings , 2017 .

[22]  Maria Wall,et al.  Energy Simulations for Glazed Office Buildings in Sweden , 2008 .

[23]  S V Szokolay,et al.  Solar declination and the equation of time , 1984 .