Energy Efficiency Design Guide for Optimal Urban Features of Open Spaces in Residential Complexes

Ruwaa Bahgat (1), Rabee M. Reffat (2), Shawkat L. Elkady (3)
(1) Architecture Department, Faculty of Engineering, Assiut University, Assiut, Egypt, Egypt,
(2) Architecture Department, Faculty of Engineering, Assiut University, Assiut, Egypt, Egypt,
(3) Architecture Department, Faculty of Engineering, Assiut University, Assiut, Egypt, Egypt

Abstract

The energy consumption in buildings and especially residential buildings is immensely affected by the design of urban open spaces around these buildings. Many countries including Egypt have been witnessing rapid growth in residential complexes while the effect of urban design on microclimate and energy use is not given appropriate considerations. Accordingly, this has contributed to the massive increase of energy consumption. Many studies have been conducted for analyzing the effects of urban features of open spaces (variables) and their values on the microclimate. A set of values for one or more variables were addressed in each of these studies and their effect on urban microclimate and energy use were measured. However, such effects were diverse and dispersed. Therefore, the aim of this paper is to identify the optimal settings of urban features of open spaces that contribute to reducing energy consumption in buildings and achieve outdoor thermal comfort in the context of urban open spaces in residential complexes. In order to achieve this goal an extensive and thorough literature review is conducted for classifying and analyzing the impacts of different values of each urban feature of open spaces on energy use and thermal comfort. The urban features of open spaces in residential complexes are classified into five categories: urban morphology, street pattern, urban density, building distribution, and urban canyon. There are various subvariables for each category with corresponding range of values which are classified into different sets. Each set corresponds to the same urban pattern and climate zone. The results of these sets and categories are comparatively analyzed in order to identify the optimal values that contribute to reducing energy consumption in buildings and achieve outdoor thermal comfort. The outcome of this extensive comparative analysis is resulted in the form of five main urban patterns (that are dominantly used in residential complexes), for the two climate zones in Egypt (hot arid, and hot humid) along with the optimal urban design features of these five main urban patterns. The outcome of this research paper is presented in a matrix format that graphically presents these urban patterns and the optimal values of the urban open space features (variables) along with the indicators of energy consumption and outdoor thermal comfort. This matrix provides architects and building designers with a useful and friendly design guide that can be used at the early phases of urban design and can help them to achieve energy efficient and comfortable urban-open spaces in residential complexes. Such design guide will contribute in improving the awareness of designers at the early phases of the design process and direct their designs to be energy conscious and efficient prior to the detailed design phase wherein energy simulation is time-consuming and expensive.

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References

Abdel-Aziz M et al, Effects of Tree Shading on Building’s Energy Consumption - The Case of Residential

Buildings in a Mediterranean Climate, American Journal of Environmental Engineering; 2015, 5(5). p. 131-140

Abed H S, Effect of Building Form on the Thermal Performance of Residential Complexes in the Mediterranean Climate of the Gaza Strip, Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master in Architectural Engineering, Faculty of Engineering, The Islamic University of Gaza; 2012, Gaza– Palestine.

Agarwal K, Residential Cluster, Ahmedabad: Housing based on the traditional Pols, PLEA2009 - 26th

Conference on Passive and Low Energy Architecture, Quebec City, Canada, 22-24 June 2009

Allegrini J, Influence of morphologies on the microclimate in urban neighborhoods. J. WindEng.Ind.Aerodyn.144; 2015. p.108–117

Andreou E, Thermal comfort in outdoor spaces and urban canyon microclimate, Renewable Energy 55;

p. 182-188

Asfour O S, Alshawaf E S, Effect of housing density on energy efficiency of buildings located in hot climates, Energy and Buildings 91; 2015. p. 131–138

Bayoumi A, Comparative Wind Simulation Studies of Different Urban Patterns in Hot Arid Region: Touristic Resort at Qarun Lake, Fayoum Region, Egypt. Energy Science and Technology 5; 2013. p. 38-44

Ben Hamouche M, Climate, Cities And Sustainability In The Arabian Region: Compactness As A New

Paradigm In Urban Design And Planning. Archnet-IJAR, Volume 2 - Issue2; 2008. p. 196-208

Bourbia F, and Boucheriba F, Impact of street design on urban microclimate for semi-arid climate (Constantine). Renewable Energy 35;2010.p. 343–347

Busato L, Passive cooling and energy efficient strategies for design of hotel on the southern coast of pernambuco, Master thesis, Architecture Energy and Sustainability LEARN, London Metropolitan University; 2003.

Calcerano F, and Martinelli L, Numerical optimization through dynamic simulation of the position of trees around a stand-alone building to reduce cooling energy consumption. Energy and Buildings 112; 2016. p. 234–243

Chatzidimitriou A, and Yannas S, Microclimate development in open urban spaces: the influence of form and materials, Energy and Buildings; 2015.

Christensen C, and Horowitz S, Orienting the Neighborhood: A Subdivision Energy Analysis Tool Preprint. The 2008 ACEEE Summer Study on Energy Efficiency in Buildings Pacific Grove, California August 17–22, 2008

Dalman M, and Salleh S, Microclimate and Thermal Comfort of Urban Forms and Canyons in Traditional and Modern Residential Fabrics in Bandar Abbas, Iran. Faculty of Design and Architecture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, 2011

Dimoudi et al, Use of cool materials and other bioclimatic interventions in outdoor places in order to mitigate the urban heat island in a medium size city in Greece. Sustainable Cities and Society ;2014

Draetal LA, Assessment of Solar Access in different urban space configurations in two southern latitude cities with mild climates, 30th International Plea Conference , Ahmedabad: CEPT University; 2014. p. 17. El Dallal N, and Visser F, A climate responsive urban design tool: a platform to improve energy efficiency in a dry hot climate, International Journal of Sustainable Energy; 2015.

El-Deeb KH, Sherif A, and El-Zafarany A, Effect of Building Form and Urban Pattern On Energy Consumption of Residential Buildings in Different Desert Climates, PLEA2012 - 28th Conference, Opportunities, Limits & Needs Towards an environmentally responsible architecture Lima, Peru 7-9 November 2012.

El-Deeb KH, Sherif A, and El-Zafarany A, Effect Of Courtyard Height And Proportions On Energy Performance Of Multi-Storey Air-Conditioned Desert Buildings. 30th International Plea Conference 16-18

December 2014, CEPT University, Ahmedabad

Erell E et al , Effect of high-albedo materials on pedestrian heat stress in urban street canyons, Urban Climate journal; 2014. p. 234–243

Ewing R, and Rong F, The Impact of Urban Form on U.S. Residential Energy Use. Housing Policy Debate Volume 19, Issue 1

Ghaffarianhoseini A, Berardi U, Thermal performance characteristics of unshaded courtyards in hot and humid climates. Building and Environment; 2015.

Harbich L, Labaki L , and Matzarakis A, Effect of tree planting design and tree species on human thermal comfort in the tropics, Landscape and Urban Planning 138; 2015.p. 99–109

Heisler M , Energy saving with trees, journal of Arboriculture . vol 12 no 5; 1986. p113-125.

Hong B, and Lin B, Numerical studies of the outdoor wind environment and thermal comfort at pedestrian level in housing blocks with different building layout patterns and trees arrangement, Renewable Energy; 2014.

Hwang R L, Lin T P, and Matzarakis A , Seasonal effects of urban street shading on long-term outdoor

thermal comfort, Building and Environment 46; 2011. p. 863-870

Kruger E.L, Minella F.O, and Rasia,F, Impact of urban geometry on outdoor thermal comfort and air quality from field measurements in Curitiba. Building and Environment 46; 2011.p. 621-634

Lee H, Mayer H, and Chen L, Contribution of trees and grasslands to the mitigation of human heat stress in a residential district of Freiburg, Southwest Germany, Landscape and Urban Planning 148 ;2016. p. 37–50

Marcos P, Wind velocity effects on the quality and efficiency of ventilation in the modeling of outdoor

spaces. Case studies Building Serv. Eng. Res. Technol 37(1); 2016. p. 33–50.

Martins T, Adolphe L, and Krause C, Microclimate Effects of Urban Geometry on Outdoor Thermal Comfort in the Brazilian Tropical Semi-arid Climate. 28th Conference, Opportunities, Limits & Needs Towards an environmentally responsible architecture Lima, Peru 7-9 November 2012 ´

Mohajeri N et al, Effects of urban compactness on solar energy potential. Renewable Energy 93; 2016.p. 469-482

Muhaisen A S, and Abed H M, Effect of Urban Geometry and Spacing on the Thermal Performance in

the Mediterranean Climate of the Gaza Strip, Journal of Architecture and Planning, Vol. 26 (1), pp. 1-14,

Riyadh.

Muhaisen A S, and Gadi M B, Shading performance of polygonal courtyard forms. Building and Environment 41; 2006. p.1050–1059

Muhaisen A S, and Gadi M B, Effect of courtyard proportions on solar heat gain and energy requirement in the temperate climate of Rome. Building and Environment 41; 2006. p. 245–253

Muhaisen A S, and Gadi M B, Mathematical model for calculating the shaded and sunlit areas in a circular courtyard geometry. Building and Environment 40; 2005. p.1619–1625

Okeil A, A holistic approach to energy efficient building forms, Energy and Buildings 42 ; 2010. p.

–1444.

Ooka R, Chen H, and Kato S, Study on optimum arrangement of trees for design of pleasant outdoor environment using multi-objective genetic algorithm and coupled simulation of convection, radiation and conduction. Journal of Wind Engineering and Industrial Aerodynamics 96; 2008. p. 1733–1748

Pisello A L et al, Traditional and Innovative Materials for Energy Efficiency in Buildings, Key Engineering Materials ; 2016 Trans Tech Publications, Switzerland

Prayitno B, An Analysis On Spatial Permeability And Fluid Dynamics Of Wind And Thermal In Tropical

Riverside Residential Areas Of Banjarmasin City, Indonesia, J. Manusia Dan Lingkungan 20; 2013. p. 199-212

Sanaieian H, Seraj F M, Mohammad S, and Lahijani M, Placement of semi-enclosed spaces and energy demand. PLEA2013 - 29th Conference, Sustainable Architecture for a Renewable Future, Munich, Germany 10-12 September, 2013.

Sanusi R, Johnstone D, May P, and Livesley S, Street Orientation and Side of the Street Greatly Influence the Microclimatic Benefits Street Trees Can Provide in Summer, Journal of Environmental Quality, Published January 11, 2016

Shishegar N, Street Design and Urban Microclimate: Analyzing the Effects of Street Geometry and Orientation on Airflow and Solar Access in Urban Canyons. Iran, 2013

Singh R, and Yadav M, Study Of Energy Efficient Design Strategies For Building Clusters In Hot & Dry

Climate: An Overview, Emerging trends in Engineering & Management for Sustainable Development 2016

International conference, Feb 2016

Taleghani M, Sailor D, and Weiss G, Micrometeorological simulations to predict the impacts of heat mitigation strategies on pedestrian thermal comfort in a Los Angeles neighborhood, Environ. Res. Lett. 11; 2016.

Taleghani M, Sailor D, and Ban-Weiss G, Outdoor thermal comfort within five different urban forms in the Netherlands. Building and Environment; 2014.

Targhi M Z, and Dessel S V, Potential contribution of urban developments to outdoor thermal comfort conditions: The influence of urban geometry and form in Worcester, Massachusetts, USA, International Conference on Sustainable Design, Engineering and Construction, Procedia Engineering 118; 2015. p. 1153 – 1161.

Tariq T, An ENVI-met Simulation Study on Urban Open Spaces of Dhaka. Bangladesh, 30th International Plea Conference 16-18 December 2014, CEPT University;2014 , Ahmedabad.

Toudert F, and Mayer H, Effects Of Street Design On Outdoor Thermal Comfort. Meteorological Institute University of Freiburg; Germany, 2007

Tsang Huang K, Jhen Li Y, Impact of street canyon typology on building’s peak cooling energy demand: a parametric analysis using orthogonal experiment, Energy and Buildings. http://dx.doi.org/10.1016/j.enbuild.2017.08.054

Van N, Optimization for Passive Design of Large Scale Housing Projects for Energy and Thermal Comfort in a Hot and Humid Climate, 30th International Plea Conference 16-18 December 2014, CEPT University, Ahmedabad vol 1, p 52- 58

Wang Z, Zhao X, Yang J, and Song J, Cooling and energy saving potentials of shade trees and urban lawns in a desert city. Applied Energy 161; 2016 .p. 437–444

Yahia M, and Johansson E, Influence of urban planning regulations on the microclimate in a hot dry climate: The example of Damascus, Syria. J Hous and the Built Environ; 2013. p. 28:51–65

Yang L, Environmental impacts of reflective materials: Ishighalbedoa ‘silver bullet’ for mitigating urban heat island?, Renewable and Sustainable Energy Reviews 47; 2015. p.830–843

Yas E, and Vildan O K, Evaluation of the Effects of Courtyard Building Shapes on Solar Heat Gains and

Energy Efficiency According to Different Climatic Regions. Energy and Buildings; 2014

Yekang K, Urban Form and Residential Energy Use: A Review of Design Principles and Research Findings Journal of Planning Literature; 2013. p. 28- 327

Yuan J, Farnham C, and Emura K, Development of a retro-reflective material as building coating and evaluation on albedo of urban canyons and building heat loads. Energy and Buildings 103; 2015. p. 107-117.

Zakaria M.A, and KubotaT, Environmental Design Consideration for Courtyards in Residential Buildings in Hot-humid Climates. International Journal Of Built Environment And Sustainability , Published By Faculty of Built Environment, Ijbes 1(1)/2014 - 45-51, Universititeknologi Malaysia Website: http://Www.Ijbes.Utm.My

Authors

Ruwaa Bahgat
[email protected] (Primary Contact)
Rabee M. Reffat
Shawkat L. Elkady
Bahgat, R., Reffat, R. M., & Elkady, S. L. (2019). Energy Efficiency Design Guide for Optimal Urban Features of Open Spaces in Residential Complexes. ARCHive-SR, 3(1), 136–152. https://doi.org/10.21625/archive.v3i1.436

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