Influence of Urban Settlements’ Geometry on Outdoor Thermal Conditions and Comfort: A Case Study of Kampung in Surabaya-Indonesia

Ronalmanto Ronalmanto, I Gusti Ngurah Antaryama, Sri Nastiti Nugrahani Ekasiwi

Abstract


In urban areas, especially urban settlements, low thermal comfort at pedestrian height and the high use of building energy are two interrelated conditions. Geometry of built environment is a factor that correlates with thermal conditions of the location and comfort. Understanding how geometry of built environment affects conditions and thermal comfort can be the basis for improving thermal condition as well as increasing thermal comfort. This study examines the influence of urban settlement geometry to thermal conditions and thermal comfort of urban space. An experiment was carried out on ten blocks, consisting of two block models and two orientations: Blocks with Different Height-to-Width Ratio (H / W = 0.8-1.5-2.3) and Blocks with the Same Height-to-Width Ratio but With Different Left-Right Height (H / W = 1.5-1.5'-1.5 "), respectively in the North-South and East-West orientation. The ENVI-met 3.1 program was used to simulate the conditions and thermal comfort of the blocks in the hottest day conditions. The results of this study indicate the geometry of the urban settlement influences two factors or thermal environment, i.e., direct solar radiation reception or block irradiation duration and wind speed. Features of the geometry affecting the thermal conditions are angle of the sky opening and block's orientation towards incoming winds. These two features are regarded as the dominant factor influencing the overall thermal conditions and comfort of the settlement blocks. This study also confirms that hight-width (H/W) ratio as the main parameter governing thermal conditions and comfort of the block.

Keywords


Compact Low-Rise; Experimental; Hottest Day Conditions; Low- Lying Tropical Climate Area; PET

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References


B. Guneralp, R.I. McDonald, M. Fragkias, J. Goodness, P.J. Marcotullio, K.C. Seto, “Urbanization Forecasts, Effects on Land Use, Biodiversity, and Ecosystem Services,” in Urbanization, Biodiversity and Ecosystem Services: Challenges and Opportunities, eds. T. Elmqvist, M. Fragkias, J. Goodness, B. Guneralp, P.J. Marcotullio, R.I. McDonald, S. Parnell, M. Schewenius, M. Sendstad, K.C. Seto, C. Wilkinson, London: Springer, pp. 437-452, 2013.

T.R. Oke, “City Size and the Urban Heat Island”, Atmospheric Environment, vol. 7, pp 769-779, 1973.

T.R. Oke, Boundary Layer Climates, 2nd Edition, London, Routledge, 1987

A. J. Arnfield, “Two Decades of Urban Climate Research: A Review of Turbulence, Exchanges of Energy and Water, and The Urban Heat Island,” International Journal of Climatology, vol. 23, pp 1-26, 2003.

I G.N. Antaryama, S.N.N. Ekasiwi, B.C. Cahyono, FX. T.B.S. Samodra, Penataan Bangunan Perumahan Perkotaan untuk Mengurangi Panas Lingkungan Akibat Pemanasan Global di Jawa Timur, Surabaya: ITS, 2010.

M. Davies, P. Steadman, T. Oreszczyn, “Strategies for the Modification of the Urban Climate and the Consequent Impact on Building Energy Use,” Energy Policy. vol. 36, pp. 4548–4551, 2008.

Y. Yongling, ‘Energy Consumption and Space Density in Urban Area,” Energy Procedia, vol. 5, pp. 895–899, 2011.

D. Siswanto, S. Mujiyanto, Suharyati, S H. Pambudi, J L. Wibowo, M. Pratiwi, S. Abdurrahman, Walujanto, Outlook Energi Indonesia 2019, Jakarta: Sekretariat Jenderal Dewan Energi Nasional, 2019.

P. Moonen, T. Defraeye, V. Dorer, B. Blocken, J. Carmeliet, “Urban Physics: Effect of the Micro-climate on Comfort, Health and Energy Demand,” Frontiers of Architectural Research, vol. 1, pp. 197–228, 2012.

T.R. Oke, “Canyon Geometry and the Nocturnal Urban Heat Island: Comparison of Scale Model and Field Observations,” Journal of Climatology, vol. 1, pp. 237-254, 1981.

T.R. Oke, “Street Design and Urban Canopy Layer Climate”, Energy and Buildings, vol. 11, pp. 103-113, 1988.

R.A. Memon, D.Y.C. Leung, C-H. Liu, “Effects of Building Aspect Ratio and Wind Speed on Air Temperatures in Urban-Like Street Canyons,” Building and Environment, vol. 45, pp. 176-188, 2010.

F. Ali-Toudert, H. Mayer, “Numerical Study on the Effects of Aspect Ratio and Orientation of an Urban Street Canyon on Outdoor Thermal Comfort in Hot and Dry Climate,” Building and Environment, vol. 41, pp. 94–108, 2006.

E. Johansson, Urban Design and Outdoor Thermal Comfort in Warm Climates: Studies in Fez and Colombo, Sweden: Lund University, 2006.

F. Ali-Toudert, H. Mayer, “Effects of Asymmetry, Galleries, Overhanging Facades and Vegetation on Thermal Comfort in Urban Street Canyons,” Solar Energy, vol. 81, pp. 742-754, 2007.

E.L. Kruger, F.O. Minella, F. Rasia, “Impact of Urban Geometry on Outdoor Thermal Comfort and Air Quality from Field Measurements in Curitiba, Brazil”, Building and Environment, vol. 46, pp. 621-634, 2011.

J. Hang, M. Sandberg, Y. Li, “Effect of Urban Morphology on Wind

Condition in Idealized City Models,” Atmospheric Environment, vol. 43, pp. 869–878, 2009.

M. Taleghani, L. Kleerekoper, M. Tenpierik, A.v.d. Dobbelsteen, “Outdoor Thermal Comfort within Five Different Urban Forms in the Netherlands,” Building and Environment, vol. 30, pp 1-14, 2015.

A.C. Nugroho, “Kampung Kota sebagai Sebuah Titik Tolak dalam Membentuk Urbanitas dan Ruang Kota Berkelanjutan,” Jurnal Rekayasa, vol. 130, pp 209-218, 2009.

Executive Summary Rencana Tata Ruang Wilayah Surabaya, 2015.

J. Silas, W. Setyawan, R. Ernawati, M. Okitasari, Kampung Surabaya Menuju Abad 21, Kajian Penataan dan Revitalisasi Kampung di Surabaya, Surabaya; Badan Perencanaan Pembangunan Kota, 2013

AP. Gagge, AP. Fobelets, LG. Berglund, “A standard Predictive Index of Human Response to the Thermal Environment, ASHRAE, vol. 92, pp. 709-31, 1986.

J. Pickup and R de Dear, “An outdoor thermal comfort index (OUT_SET*) - Part I - the Model and Its Assumptions,” In RJ. de Dear, JD. Kalma, TR. Oke, A Auliciems, Sydney, Geneva: World Meteorological Organization; Selected papers from the ICB-ICUC’99 conference, 2000.

P. Höppe, “The Physiological Equivalent Temperature- a Universal Index for the Biometeorological Assessment of the Thermal Environment,” Int J Biometeorol, vol. 43, 71-5, 1999.

G. Jendritzky, A. Maarouf, H. Staiger, “Looking for a Universal Thermal Climate Index UTCI for Outdoor Applications,” Windsor-Conference on Thermal Standards, April 5-8, 2001.

A. Matzarakis and B. Amelung, “Physiological Equivalent Temperature as Indicator for Impacts of Climate Change on Thermal Comfort of Humans,” in MC. Thomson, HR García, M. Beniston, Seasonal Forecasts, Climatic Change and Human Health, 161 © Springer Science + Business Media B.V, 2008.

S. Thorsson, F. Lindberg, I. Eliasson, B. Holmer, “Different Methods for Estimating the Mean Radiant Temperature in an Outdoor Urban Setting.” Int. J. Climatol, vol. 27, pp.1983–1993, 2007.

H. Mayer, J. Holst, P. Dostal, F. Imbery, D. Schindler, “Human Thermal Comfort in Summer Within an Urban Street Canyon in Central Europe,” Meteorologische Zeitschrift, vol. 17, no. 3, pp. 241-250, 2008.

O.S. Asfour, “Prediction of Wind Environment in Different Grouping Patterns of Housing Blocks,” Energy and Buildings, vol. 42, pp. 2061-2069, 2010.

Ronalmanto, I G N. Antaryama, S N N. Ekasiwi, “The Effect of Pattern and Density of the Termal Condition of Urban Settlement Space in Surabaya,” Unpublished Thesis, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, 2019.

Bruse, M., (2006), ENVI-met website. http://www.envi-met.com

Badan Meteorologi Klimatologi dan Geofisika Perak-Surabaya, Data Iklim Surabaya 2011-2014.

M. Bruse, M. Bürger, A. Bohnstedt, A. Ihde, K. Jesionek, E. Lahme, Measurements and Model Simulations in WP MICRO, Ruhr- University Bochum, Institute of Geography: Research Group Climatology, 2002.

E. Jamei, P. Rajagopalan, M. Seyedmahmoudian, Y. Jamei, “Review on the Impact of Urban Geometry and Pedestrian Level Greening on Outdoor Thermal Comfort,” Renewable and Sustainable Energy Reviews, vol. 54, pp. 1002–1017, 2016.

W. Yang, “Outdoor Thermal Comfort in Urban Spaces in Singapore,” PHD Thesis, Singapore: National University. 2004.

F F. Bahar, I G N. Antaryama, S N N. Ekasiwi, “Model of Shading and Urban Landscape in Tropical Urban Termal Environment System, Unpublished Disertation, Surabaya: Institut Teknologi Sepuluh Nopember (ITS), 2017.




DOI: http://dx.doi.org/10.12962/j23546026.y2020i6.11138

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