scholarly journals A Building Retrofit and Sensitivity Analysis in an Automatically Calibrated Model Considering the Urban Heat Island Effect in Abu Dhabi, UAE

2019 ◽  
Vol 11 (24) ◽  
pp. 6905 ◽  
Author(s):  
Lindita Bande ◽  
Adalberto Guerra Cabrera ◽  
Young Ki Kim ◽  
Afshin Afshari ◽  
Mario Favalli Ragusini ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Urban Heat Island ◽  
Urban Heat Island Effect ◽  
Abu Dhabi ◽  
Weather Data ◽  
Mean Bias Error ◽  
Heat Island ◽  
Island Effect ◽  
Urban Heat ◽  
Urban Weather

Villas are a very common building typology in Abu Dhabi. Due to its preponderance in residential areas, studying how to effectively reduce energy demand for this type of building is critical for Abu Dhabi, and many similar cities in the region. This study aims to show the impact of proposed energy efficiency measures on a villa using a calibrated model and to demonstrate that to be accurate, the model must be driven using urban weather data instead of rural weather data due to the significance of the urban heat island effect. Available data for this case study includes construction properties, on-site (urban) weather data, occupancy-related loads and schedules and rural weather data. Four main steps were followed, weather data customisation combining urban and rural weather variables, model calibration using a genetic algorithm-based tool and simulating retrofit strategies. We created a calibrated model for electricity demand during 2016–2017 with a 4% normalized mean bias error and an 11% coefficient of variation of the mean square error. Changing from none to all retrofit strategies results in a 34% reduction in annual energy consumption. According to the calibrated model, increased urban temperatures cause a 7.1% increase in total energy consumption.

An empirical model for the urban heat island intensity for a site in Manchester

2016 ◽  
Vol 38 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Geoffrey J Levermore ◽  
John B Parkinson
Keyword(s):  
Urban Heat Island ◽  
Cloud Cover ◽  
Urban Heat Island Effect ◽  
Urban Heat Island Intensity ◽  
Weather Data ◽  
Rural Site ◽  
Heat Island ◽  
Island Effect ◽  
Urban Heat ◽  
A Site

The urban heat island intensity is the difference in temperature between a site close to the centre of a city and a site close to but outside the city (the rural site). The urban heat island intensity varies continuously throughout the day and is strongly dependent on the weather conditions at the time. The most important weather parameters are the wind speed, the cloud cover and the solar radiation. We have developed an empirical model for the urban heat island intensity and applied it to a site near the centre of Manchester and a rural site at Rostherne, approximately 17 km away. Weather data from the Met Office station at Rostherne are available from the British Atmospheric Data Centre. Our model uses the measured wind speed, the measured cloud cover and the measured solar radiation from Rostherne. The parameters of the model are adjusted to give a best fit to the measured urban heat island intensity for the year 2014. The model is then used to predict the hourly urban heat island intensity for the first six months of 2015, obtaining good results especially as the values of the parameters are not changed throughout the year and the model does not make use of the temperatures at either site. The accuracy of the model is such that if used for a basic heating and cooling load calculations the accuracy of the annual demand is high. Practical applications: Many buildings that building services engineers and other building designers design are in urban or city centres. However, the weather data for their designs are based on near-rural weather data which do not include the urban heat island effect. This paper describes a method to ascertain the urban heat island effect in the centre of Manchester. A designer could apply this for Manchester and as an initial indication to other similar urban areas. This will allow the rural weather data to be adjusted on an hourly basis for the urban heat island effect throughout the year.

Development of Green Paving Technology for Urban Roads

2013 ◽  
Vol 723 ◽  
pp. 601-608
Author(s):  
Hsien Chou Chen ◽  
Shih Hsienh Yang ◽  
Ying Wei Liu ◽  
Pai Ching Sun ◽  
Deng Fong Lin
Keyword(s):  
Energy Consumption ◽  
Surface Temperature ◽  
Urban Heat Island ◽  
Groundwater Table ◽  
Urban Heat Island Effect ◽  
Heat Island ◽  
Surface Layers ◽  
Island Effect ◽  
Urban Heat ◽  
Pavement Construction

This The main objective of this study is to evaluate the feasibility of using Permeable Reclaimed Concrete (PRC) for urban roads construction. The PRC can be used at both stabilized base and wearing surface layers for new constructed pavements. The purposes of this paper were focused on the comparison of cost and energy consumption in both material production and pavement construction stages between PRC pavement and conventional hot-mixed asphalt (HMA) pavement. In addition, the potential ecological advantages such as reducing urban heat island effect as well as enrich groundwater table by using PRC pavement in the urban roads was also discussed. The results showed that the PRC pavement could effectively reduce 3 to 5°C surface temperature compare to conventional HMA pavement.

scholarly journals Urban Heat Island Effect on the Energy Consumption of Institutional Buildings in Rome

2017 ◽  
Vol 245 ◽  
pp. 082015 ◽  
Author(s):  
Claudia Calice ◽  
Carola Clemente ◽  
Agnese Salvati ◽  
Massimo Palme ◽  
Luis Inostroza
Keyword(s):  
Energy Consumption ◽  
Urban Heat Island ◽  
Urban Heat Island Effect ◽  
Heat Island ◽  
Island Effect ◽  
Urban Heat
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