scholarly journals Thermal Sensation in Courtyards: Potentialities as a Passive Strategy in Tropical Climates

2020 ◽  
Vol 12 (15) ◽  
pp. 6135 ◽  
Author(s):  
Ivan Julio Apolonio Callejas ◽  
Luciane Cleonice Durante ◽  
Eduardo Diz-Mellado ◽  
Carmen Galán-Marín
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Thermal Sensation ◽  
Thermal Response ◽  
Tropical Climate ◽  
Design Strategies ◽  
Physiological Equivalent Temperature ◽  
Synoptic Conditions ◽  
The Impact ◽  
Passive Strategy

Climate change will bring changes to our living conditions, particularly in urban areas. Climate-responsive design strategies through courtyards can help to moderate temperatures and reduce the thermal stress of its occupants. Thermal response inside courtyard is affected not only by its morphological composition but also by subjective factors. Thus, standardized thermal scales may not reflect the stress of the occupants. This study investigated the impact on thermal attenuation provided by a courtyard located in a tropical climate under extreme cold and hot synoptic conditions by means of local thermal sensation scales. Microclimatic variables were monitored, simultaneously with the application of a thermal comfort questionnaire, by using weather stations installed outside and inside the courtyard. The Modified Physiological Equivalent Temperature Index (mPET) was utilized to predict the heat stress. Calibration was conducted using linear regression to attribute particular thermal sensation votes to correspondent mPET values. It was found that thermal sensation can be affected by factors such as psychological, behavioral, and physiological. The courtyard’s form provides a passive cooling effect, stabilizing interior thermal sensation, with attenuation peaks of 6.4 °C on a cold day and 5.0 °C on a hot day. Courtyards are an alternative passive strategy to improve thermal ambience in tropical climate, counterbalancing climate change.

Improvement of the Outdoor Thermal Comfort by Water Spraying in a High-Density Urban Environment under the Influence of a Future (2050) Climate

2021 ◽  
Vol 13 (14) ◽  
pp. 7811
Author(s):  
Ka-Ming Wai ◽  
Lei Xiao ◽  
Tanya Zheng Tan
Keyword(s):  
Climate Change ◽  
Thermal Comfort ◽  
Thermal Sensation ◽  
Ambient Air ◽  
Outdoor Thermal Comfort ◽  
Future Climate Change ◽  
Physiological Equivalent Temperature ◽  
Adaptation Measures ◽  
Prevailing Wind Direction ◽  
The Impact

Adaptation to prepare for adverse climate change impacts in the context of urban heat islands and outdoor thermal comfort (OTC) is receiving growing concern. However, knowledge of quantitative microclimatic conditions within the urban boundary layer in the future is still lacking, such that the introduction of adequate adaptation measures to increase OTC is challenging. To investigate the cooling performance of a water spraying system in a sub-tropical compact and high-rise built environment in summer under the influence of future (2050) climatic conditions, results from two validated models (Weather Research and Forecast (WRF) and ENVI-met models) have been used and analyzed. Our results indicate that the spraying system provides cooling of 2–3 °C for ambient air temperature at the pedestrian-level of the urban canyons considered here, which benefits pedestrians. However, improvement of the OTC in terms of the physiological equivalent temperature (PET—a better indicator of human thermal sensation) was noticeable (e.g., <42 °C or from very hot to hot) when the urban canyon was orientated parallel to the prevailing wind direction only. This implies that in order to improve city resilience in terms of heat stress, more holistic adaptation measures in urban planning are needed. This includes the introduction of more breezeways and building disposition to facilitate the urban ventilation, as well as urban tree arrangement and sunshades to reduce direct solar radiation to plan for the impact of future climate change.

A Dynamic Analysis Of The Impact Of Air Pollution On The daylight Availability In An Open-plan Office In London

2021 ◽  
pp. 94-103
Author(s):  
Jiangtao Du ◽  
Steve Sharples
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Simulation Analysis ◽  
Design Stage ◽  
Design Strategies ◽  
Early Design Stage ◽  
Pollutant Deposition ◽  
Open Plan ◽  
Building Project ◽  
The Impact

The deposition of air pollutants on glazing can significantly affect the daylight transmittance of building fenestration systems in urban areas. This study presents a simulation analysis of the impact of air pollution and glazing visual transmittance on indoor daylight availability in an open-plan office in London. First, the direct links between glazing visual transmittance and daylighting conditions were developed and assessed. Second, several simple algorithms were established to estimate the loss of daylight availability due to the pollutant deposition at the external surface of vertical glazing. Finally, some conclusions and design strategies to support facade planning at the early design stage of an urban building project were developed.

scholarly journals The Impact of Home Gardening amidst Climate Change

2020 ◽  
Vol 1 (1) ◽  
pp. 20-23
Author(s):  
Froilan D. Mobo
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Community Gardens ◽  
Sudden Change ◽  
The Philippines ◽  
Ozone Layer ◽  
Home Gardening ◽  
The Face ◽  
The Impact ◽  
The Town

Today’s climate is unpredictable there are so many natural calamities which took place in our country which is the Philippines, two weeks ago because of the sudden changes of the weather in the Province of Zambales, the Philippines a strong tornado hits the town of Castillejos, Zambales which some of the electrical wirings were severely damaged because of the sudden change of the climate. The researcher is thinking of implementing a home gardening to each Municipality in our Province. By doing this it can help lessen the pollution in the air and it will help heal our Ozone Layer faster. The empirical evidence for the benefits of gardening and the advocate of the development and testing of socio-ecological models of community resilience through the impact of community gardens, especially in urban areas is highly effective(Okvat & Zautra, 2011). As lessening the air pollution will have a greater impact on our Ozone Layer no to deplete but it will heal the would faster. The present study revealed that local experiences in the face of climate change adaptation have merits that need special consideration(Anik & Khan, 2012). Also, the Researcher will implement this project in the Municipality of Subic, Zambales.

scholarly journals Impact Assessment Model for the Implementation of Cargo Bike Transshipment Points in Urban Districts

2020 ◽  
Vol 12 (10) ◽  
pp. 4082 ◽  
Author(s):  
Tom Assmann ◽  
Sebastian Lang ◽  
Florian Müller ◽  
Michael Schenk
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Urban Transportation ◽  
Assessment Model ◽  
Nox Emissions ◽  
Urban Districts ◽  
Last Mile ◽  
Reduce Emissions ◽  
Cargo Bike ◽  
The Impact

Mitigating climate change and improving urban livability is prompting cities to improve sustainability of urban transportation and logistics. Cargo bikes, in combination with urban transshipment points, are gaining momentum as a green last mile alternative. Although a wide body of research proves their viability in dense urban areas, knowledge about planning urban transshipment points is very limited. This also entails the siting of such facilities and the assessment of effects on emissions. This study therefore presents a first quantitative scenario-based model that assesses the impacts on a district. It examines different strategies for siting urban transshipment points in a single district and its effect on traffic, the carbon footprint, and air quality to give strategic insights where to create candidate locations for such facilities. Our result contributes to knowledge of planning urban transshipment facilities and assessing the impact of different configurations. The findings demonstrated that the use of cargo bikes to make courier, express, and parcel (CEP) deliveries in urban districts could reduce greenhouse gas (GHG), particulate matter (PM10), and nitrogen oxides (NOx) emissions significantly. However, the choice of vehicles completing inbound and outbound processes and the strategies for siting urban transshipment points display widely differing and even conflicting potential to reduce emissions.

Cross sectoral and scale-up impacts of greywater recycling technologies on catchment hydrological flows

2008 ◽  
Vol 57 (5) ◽  
pp. 741-746 ◽  
Author(s):  
N Bertrand ◽  
B Jefferson ◽  
P Jeffrey
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Surface Runoff ◽  
Urban Areas ◽  
Scale Up ◽  
Catchment Scale ◽  
Flood Volume ◽  
Recycling Systems ◽  
Flooding Events ◽  
The Impact

With the growth of urban areas and climate change, decisions need to be taken to improve water management. This paper reports an assessment of the impact of greywater recycling systems on catchment scale hydrological flows. A simulation model developed in InfoWorks CS (Wallingford Software Ltd) was used to evaluate how river flows, sewer flows, surface runoff and flooding events may be influenced when grey water recycling systems of different number and scale are implemented in a representative catchment. The simulations show the effectiveness of greywater recycling systems in reducing total wastewater volume and flood volume. However, no hydraulic impacts due to implementation of greywater was identified by the model.

scholarly journals A New Framework to Evaluate Urban Design Using Urban Microclimatic Modelling in Future Climatic Conditions

2018 ◽  
Author(s):  
Dasaraden Mauree ◽  
Silvia Coccolo ◽  
Dasun Perera ◽  
Vahid Nik ◽  
Jean-Louis Scartezzini ◽  
...  
Keyword(s):  
Climate Change ◽  
Energy Consumption ◽  
Urban Design ◽  
Urban Areas ◽  
Energy System ◽  
Climatic Conditions ◽  
Local Climate ◽  
Heating And Cooling ◽  
The Future ◽  
The Impact

Building more energy efficient and sustainable urban areas that will both mitigate the effect of climate change and adapt for the future climate, requires the development new tools and methods that can help urban planners, architect and communities achieve this goal. In the current study, we designed a workflow that links different methodologies developed separately, to derive the energy consumption of a university school campus for the future. Three different scenarios for typical future years (2039, 2069, 2099) were run as well as a renovation scenario (Minergie-P). We analyse the impact of climate change on the heating and cooling demand of the buildings and determined the relevance of the accounting of the local climate in this particular context. The results from the simulations showed that in the future there will a constant decrease in the heating demand while for the cooling demand there will be a significant increase. It was further demonstrated that when the local climate was taken into account there was an even higher rise in the cooling demand but also that the proposed renovations were not sufficient to design resilient buildings. We then discuss the implication of this work on the simulation of building energy consumption at the neighbourhood scale and the impact of future local climate on energy system design. We finally give a few perspective regarding improved urban design and possible pathways for the future urban areas.

scholarly journals ANALYSIS OF NO<sub>2</sub> TROPOSPHERIC COLUMN AMOUNT AT AIRPORTS IN MALAYSIA BEFORE AND DURING COVID-19 PANDEMIC USING SENTINEL-5P TROPOMI DATA

2021 ◽  
Vol XLIII-B3-2021 ◽  
pp. 399-403
Author(s):  
K. D. Kanniah ◽  
N. A. F. Kamarul Zaman ◽  
K. Perumal
Keyword(s):  
Climate Change ◽  
Human Health ◽  
Urban Areas ◽  
Air Pollutants ◽  
Temporal Variations ◽  
Data Availability ◽  
Spatial And Temporal Patterns ◽  
Movement Restriction ◽  
Motorized Vehicles ◽  
The Impact

Abstract. Air pollution is a serious environmental and health issue in Malaysia due to the recent urbanization processes. The main sources of air pollutants are motorized vehicles in urban areas and airports and industrial activities. At the airports, NO2 is the main pollutant of concern besides aerosols particles, yet gap in data availability prevent studies to describe their patterns and quantify their effects on human health and climate change. In this study NO2 data from TROPOMI sensor on board Sentinel 5-P satellite was used to characterize the spatial and temporal patterns of NO2 tropospheric column amounts at major airports in Malaysia. The results demonstrate that NO2 amounts from aircrafts and ground traffic activities are generally higher and/or similar to the amounts found in urban areas. Total tropospheric column amounts of NO2 during the movement restriction imposed due to Covid-19 pandemic between March and April 2020 was approximately 50% lower the total emission during the same period in 2019 (representing a business as usual period). Assessing the spatial pattern and temporal variations in NO2 (both surface and total vertical profile) is important for monitoring the impact of air pollutants on climate change and human health in Malaysia.

scholarly journals Is Smart Growth a smart adaptation strategy?: Examining Ontario's proposed growth under climate change

2004 ◽  
Vol 71 (424-426) ◽  
pp. 57-62
Author(s):  
Brad Bass
Keyword(s):  
Climate Change ◽  
Energy Consumption ◽  
Urban Areas ◽  
Green Roof ◽  
Smart Growth ◽  
Green Roofs ◽  
Adaptation Strategy ◽  
University Of Toronto ◽  
Conducting Research ◽  
The Impact

The author is a member of Environment Canada's Adaptation and Impact Research Group, located in the Centre for Environment at the University of Toronto. His primary research interests include the use of ecological technologies in adapting urban areas to atmospheric change, the impacts of climate change on the energy sector, and the characteristics of adaptable systems. His current work on ecological technologies includes green roofs, vertical gardens and living machines. Dr Bass has been involved in two major projects, in Ottawa and Toronto, to evaluate the impact of green roofs on the urban heat island, energy consumption, stormwater runoff and water quality. Currently, Dr Bass is conducting research on integrating green roof infrastructure with other vegetation strategies at a community scale, simulating the impact of a green roof on the energy consumption of individual buildings.

scholarly journals The development of the Eco-Architecture Concept For Environmentally Responsive In A Tropical Climate

2019 ◽  
Author(s):  
Friyessi
Keyword(s):  
Sustainable Development ◽  
Architectural Design ◽  
Local Development ◽  
Design Method ◽  
Environmentally Friendly ◽  
Tropical Climate ◽  
Design Development ◽  
Design Strategies ◽  
Traditional Architecture ◽  
The Impact

Global warming is the impact of environmental degradation is the increasing average temperature of the earth's surface, including the atmosphere and the ocean. Architecture is the study of the reflection of human settlements with its surroundings so that it has a tendency to adapt to the environment through a variety of approaches in architectural design method is oriented to the environmentally friendly development. Architectural Ecology concept is the concept of building that takes into account the environmental balance of natural and man-made with the main elements, the building and the environment Academically, awareness of architecture students need to be directed to the development process-based ecological both quality and quantity. A discussion of the concept of eco-architecture useful for studying the ecology-based architectural design methods, identify potential and constraints of the tropical climate in the design development strategies that can be systematised as a learning method in the design of sustainable development. Method of discussion by comparing the theoretical analysis method browse through relevant precedent studies to determine the potential and environmental constraints as well as perceptions of the application of the concept of eco Architecture. The results were obtained from the study of theory Architectural Ecology of Heinz Frick and study precedent through the works of Kenneth Yeang and compared with traditional architecture. Summary of the second groove will be used as the draft approaches design strategies in the process of planning and designing environmentally friendly and can be recommended and implemented as a design methodology in learning to achieve sustainable development with an emphasis on quality local development in harmony with nature.

scholarly journals The importance of site on house heating energy modelling in Wellington - Integrating EnergyPlus with ENVI-met for site modelling

2021 ◽  
Author(s):  
◽  
Wendy Sunarya
Keyword(s):  
Design Process ◽  
Urban Areas ◽  
Fluid Dynamic ◽  
Ground Surface ◽  
Building Design ◽  
Building Energy ◽  
Design Strategies ◽  
Site Location ◽  
Energy Modelling ◽  
The Impact

<p>Site is an important factor in the building design process, where it is analysed to determine design strategies for responding the microclimate. It is also considered important in Building Energy Simulations (BES) where a weather file is used to represent the site location and its microclimate. However, many cases of BES in the design process use weather file from a nearby weather station rather than site specific microclimate. In fact, site microclimate can be affected by nearby parameters such as ground surface and vegetation, with unknown effects. In the Wellington, New Zealand context, micro-climates vary widely due to the local topography while suburban houses can be located on the side or bottom of a hill. These houses are likely to have different exposure to the sun and wind which can influence energy consumption for space heating.  Many studies about site-parameters impacts mainly focus on the vegetation and nearby buildings effect on microclimate. Only a few estimated the impact of site-parameters on building energy use and mostly their cases are in urban areas (flat terrain). Unfortunately, site parameters, such as altitude and slope, associated with the Wellington topography (hilly terrain) have never been examined. This thesis investigates the importance of site parameters on house heating energy modelling for the Wellington context. BES software, EnergyPlus, was used and explored to identify limitations in modelling site parameters. An attempt was made to solve these limitations through the integration with microclimate software. Three microclimate software programmes were reviewed: ENVI-met, UWG (Urban Weather Generator) and CFD (Computational Fluid Dynamic) software.  ENVI-met was selected to generate the local air temperature and relative humidity affected by site parameters, which was used for EnergyPlus weather-file modification. A parametric study of ENVI-met basic input with model evaluation was also conducted. The results of parametric test integrating ENVI-met with EnergyPlus showed that ENVI-met mostly produce insignificant impacts of site parameters on house heating energy, unlike the results found in the literature review. This is likely due to the cool weather conditions (winter in Wellington) used in simulation, which suggests that the idea of microclimate modelling using ENVI-met is not applicable for house heating energy modelling in the temperate, Wellington context.</p>

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