Development of urban building energy models in Hong Kong
building energy efficiency programs in Hong Kong. Highlights • Developed urban building energy models in Hong Kong based on open data sources • Big data mapping and integration for city
Urban heat islands in Hong Kong: statistical modeling and
extreme UHI events in Hong Kong for both summer and winter will be set up in this paper. 2 Data and methodology 2.1 Observations and definition of UHIs in Hong Kong The Hong Kong Observatory Headquarters (HKO) is a representative urban weather sta-tion and a common choice of UHI studies in Hong Kong (Fung et al. 2009; Memon et al. 2009).
Urbanization Effect｜Hong Kong Observatory(HKO)｜Climate
Urbanization effects on the heat energy balance in the urban area. Urbanization effects on the low level wind flow over the urban area. In Hong Kong, the UHI effect is primarily a nighttime phenomenon. The UHI effect (temperature difference between urban and rural areas) is more significant in winter and is usually best displayed on individual
Impact of Urban Temperature on Energy Consumption of Hong Kong
In summary, for a 1 °C ambient temperature rise, the energy cost of Hong Kong would probably increase by HK$1.6 billion per year. Studies showed that, in the urban context of Hong Kong,
Impact of Urban Overheating and Heat-Related Mortality in Hong Kong
The subtropical climate in South China brings Hong Kong hot and humid summers, and the city is experiencing a long-term warming trend under global climate change with a greater rate during 1991–2020 [] pound heat waves embracing both daytime and nighttime extreme heat were dominant ones in China over the half past century [] Hong
Development of urban building energy models in Hong Kong
Urban building energy modeling (UBEM) is an efficient way to simulate the energy use of building stocks and conduct retrofit option assessments, supporting the implementation of carbon
Role of Renewables in Hong Kong''s Clean Energy Future
Lamma Winds turbine (Photo from Clean the Air Energy Blog) Subsuming these estimates, renewable energy sources could provide for nearly half of Hong Kong''s total electricity needs, affirming that Hong Kong''s potential far surpasses the government''s goal of 3-4%. Unfortunately, Hong Kong is unlikely to achieve this potential in the short- to medium- term
Assessing urban morphology''s impact on solar potential of high
6 天之前· According to the Paris Agreement, countries have pledged to achieve carbon neutrality in the second half of this century (Schleussner et al., 2016).Cities today represent almost 75 % of global energy demand and two-thirds of carbon emission because about 55 % of the world''s population lives in urban areas (Bouckaert et al., 2021).Cities must satisfy the increasing
Urban heat islands in Hong Kong Bonding with atmospheric
of UHIs in Hong Kong In this study, we chose the Hong Kong Observatory (HKO) Headquarters as the urban site. The HKO is a representative urban weather station and a common choice for UHI studies in Hong Kong (Fung et al., 2009; Memon et al., 2009). However, HKO is located in an urban park and close to the coast, which may affect its
Zhenjia LIN | Research Assistant Professor | PhD | The
International Centre of Urban Energy Nexus; Hong Kong, Hong Kong; Position. Postdoctoral Fellow; August 2021 - August 2022. Tsinghua University. Tsinghua-Berkeley Shenzhen Institute (TBSI)
2025 Graduate Engineer (Energy)
You should be a well motivated and creative Graduate who wants to work in Energy in the following disciplines. • Energy • Energy Science and Engineering. At Arup, we care about each member''s success, so we can grow together.
Urban heat islands in Hong Kong: Bonding with atmospheric
2.1 Observations and definition of UHIs in Hong Kong. In this study, we chose the Hong Kong Observatory (HKO) Headquarters as the urban site. The HKO is a representative urban weather station and a common choice for UHI studies in Hong Kong (Fung et al., 2009; Memon et al., 2009). However, HKO is located in an urban park and close to the coast
Measurements and simulations of energy fluxes over a high-rise
This study carried out the eddy covariance measurements over a highly-dense and compact urban area in Hong Kong. The energy fluxes exhibited obvious diurnal variations but no significant difference among the four seasons of study period. Q N and Q F respectively ranged from 50 to 600 Wm −2 and from 150 to 750 Wm −2.
Urban Building Energy and Climate (UrBEC) simulation: Example
A building and its surrounding urban microclimate are highly interdependent in a high-density city, such as Hong Kong. Overshadowing by neighbouring buildings affects solar radiation incident on a building''s façade; temperature fluctuations of external wall surfaces modify external long-wave heat exchanges; breezeways and relatively sheltered areas affect the
Study of urban geometric effects on urban surface temperature
Study of urban geometric effects on urban surface temperature retrieval and energy flux modelling : an application in Hong Kong @inproceedings{Yang2017StudyOU, title={Study of urban geometric effects on urban surface temperature retrieval and energy flux modelling : an application in Hong Kong}, author={Jinxin Yang}, year={2017}, url={https
Multi-sectoral efforts are required for decarbonising the building
The Hong Kong Government has counted the energy consumption of the nine energy end-uses in the three types of buildings in 2020, presented in Supplementary Fig. 1 52. Since the energy efficiency
Subjective outdoor thermal comfort and urban green
In highly-urbanized and densely-developed Hong Kong with humid-subtropical climate, 31% of the electricity is consumed in air-conditioning [1]. The energy demand for cooling is expected to increase further by 4.3% under the effect of
Solar Energy Development in Hong Kong and Its
Under the Hong Kong''s urban context, solar energy technologies that can be integrated into a built environment, such as in high-rise buildings, are more useful. Figure 2. Map of Hong Kong 3. TECHNOLOGY OPTIONS Solar energy systems, such as solar thermal and photovoltaics (PV), are believed to be the
City-scale information modelling for urban energy resilience with
In addition to the findings specific to Hong Kong, this study has broader implications for enhancing urban energy resilience globally. The GIS-MCDM approach proposed in this research offers a
Urban Building Energy and Climate (UrBEC) Simulation: Example
Urban Building Energy and Climate (UrBEC) Simulation: Example Application and Field Evaluation in Sai Ying Pun, Hong Kong.pdf Available via license: CC BY-NC-ND 4.0 Content may be subject to
A Surrogate Urban Building Energy Model for Predicting Cooling
2 天之前· Ali, U., et al.: Urban building energy performance prediction and retrofit analysis using data-driven machine learning approach. Energy Build 303, 113768 (2024). Balachandran,
Faculty | International Research Centre of Urban Energy Nexus
Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University. Location ZS854 Phone +852 3400 8246 stream Urban Energy System, Urban Logistics System, Urban Flow Space
Fuel cell double decker buses from Wisdom for Hong Kong
In Hong Kong, the public transport operator ''Citybus'' will operate 147 double-deckers powered by hydrogen fuel cells. Citybus has won a ten-year tender to operate regular services in the Chinese Special Administrative Region. Citybus has set the goal of operating a fully zero-emission bus fleet by 2045. The supplier of the ''DD 12'' buses is []
Development of urban building energy models in Hong Kong
The building sector accounts for 66% of total energy consumption and 93% of electricity consumption in Hong Kong, which is a challenge for decarbonization. Urban building energy modeling (UBEM) is an efficient way to simulate the energy use of building stocks and conduct retrofit option assessments, supporting the implementation of carbon reduction policies.
Urban Heat Island Effect in Hong Kong
According to the EPA of the US, "Heat islands are urbanized areas that experience higher temperatures than outlying areas." (EPA, 2024) In other words, developed land in urban areas may experience a higher temperature when compared to the surrounding remote areas. The reason that causes urban heat island effect is because the surrounding buildings
Urban human thermal comfort in hot and humid Hong Kong
In sub-tropical city of Hong Kong where summer is hot and humid, the usage of outdoor spaces is often hindered due to thermal discomfort. In order to improve the thermal comfort of the outdoor environment and to make urban outdoor spaces delightful places for people to use and enjoy, better understanding of the thermal perception of people is needed.
Investigating the urban heat and cool island effects during extreme
Abstract Urban heat island (UHI) and cool island (UCI) effects are well-known and prevalent in cities worldwide. Twenty-two weather stations in Hong Kong were classified into four categories, namely urban, urban oasis, suburban, and rural, with reference to the local climate zone (LCZ) scheme, to analyze UHI and UCI phenomena during extreme
Urbanization Effect｜Hong Kong
In Hong Kong, the UHI effect is primarily a nighttime phenomenon. The UHI effect (temperature difference between urban and rural areas) is more significant in winter and is usually best displayed on individual days with stable
Unleashing the green potential: Assessing Hong Kong''s building
This study contributes significantly to the field of sustainable energy, particularly in the context of Hong Kong''s urban landscape. It advances our understanding of building PV
Daytime urban heat island effect in high-rise and high-density
Nearly 60% of electrical energy use in Hong Kong is for space conditioning during summer months. The paper investigates the impact of design-related variables on outdoor micro level daytime heat island effect in residential developments in Hong Kong. The paper hypothesizes that the differences in outdoor temperatures within and between residential
Impacts of urban microclimate on summertime sensible and latent energy
The urban heat island (UHI) and urban moisture island (UMI) effect can be significant in Hong Kong due to its high-density land utilization, and this can strongly affect building energy performance.While the UHI'' energy impact has been rather intensively studied recently, the UMI effect on latent energy is still underexplored, especially for humid subtropical
6 FAQs about [Urban energy Hong Kong]
Does Hong Kong have a building stock?
This paper investigated Hong Kong's building stock, developing urban building energy models for residential, office, and hotel buildings. Firstly, various open-source data was collected for data mapping and integration to create a GIS-based building dataset.
Can rooftop solar energy models be used in Hong Kong?
The case study successfully demonstrated the context. development of urban building energy models in Hong Kong based on various open-source datasets. The rooftop PV potential results can provide valuable insights for renewable energy planning considering the shading from surrounding buildings, especially in this high-density city.
Can urban wind turbines be used in Hong Kong?
This research is expected to be helpful for the wind power industry in several aspects. The assessment results can facilitate urban wind turbine deployment (e.g., turbine siting and selection) in Hong Kong, and the methodology is transferable to other areas.
How does urbanization affect rainfall in Hong Kong?
Urbanization is one of the possible causes for the increasing trend and regional variation of rainfall in Hong Kong. Higher temperature in urban areas enhances convective activities and the increase in concentration of suspended particulates from urban activities favours the formation and development of rain-bearing clouds.
How reliable is building data in Hong Kong?
The building data employed in this study, sourced from the Common Spatial Data Infrastructure Portal provided by the Hong Kong government, is authoritative and reliable. However, the 3D building data was simulated from basic building blocks and heights, which do not capture the intricate shapes of buildings.
How much solar energy does Hong Kong use?
Hong Kong's roof area, totaling 26.08 km 2, shows a physical potential of approximately 4.00 × 10 13 Wh, reflecting the significant solar energy collection capacity. Similarly, building facades, covering about 330.05 km 2, possess a physical potential of 2.48 × 10 14 Wh. In 2022, Hong Kong's total electricity consumption was approximately 44.7 TWh.