Experimental Study on the Influence of Urban Water Body on Thermal Environment at Outdoor Scale Model

Syafii, Nedyomukti Imam; Ichinose, Masayuki; Wong, Nyuk Hien; Kumakura, Eiko; Jusuf, Steve Kardinal; Chigusa, Kohei

doi:10.1016/j.proeng.2016.10.023

Cited by 46 publications

(23 citation statements)

References 14 publications

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“…This paper analyzed data from a measurement campaign in a shallow urban pond in Delft, The Netherlands, in the summer of 2014 in order to assess the energy balance of such an urban surface water during hot summer nights. Previous research has shown that water bodies at night have the highest surface temperature of all the urban surfaces (Theeuwes et al, 2013;Yang and Zhao, 2015;Syafii et al, 2016), and therefore act as a heating element of the city. The results of this study show that, on an average hot summer night, radiative cooling (43 ±14%) and latent heat flux (39 ±11%) are the predominant ways the heat escapes the water body.…”

Section: Resultsmentioning

confidence: 99%

“…Water has a high thermal inertia, which causes water bodies to have relatively high temperature at the end of a night compared to other urban land use types (Oswald et al, 2012;Yang and Zhao, 2015). Nonetheless, some studies concluded that water bodies provide cooling effect also at night, although to a limited extent (Coutts et al, 2012;Syafii et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Nighttime Cooling of an Urban Pond

2019

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One of the processes by which open water cools the air during hot summer days is by storing the heat and increasing its own temperature. This heat is then released at night. The aim of this paper is to analyze this cooling process by quantifying the magnitude of turbulent, latent and sensible, heat fluxes in comparison to radiative and ground fluxes. A detailed vertical temperature profile was measured in an urban pond (∼70 cm deep with surface area of 3,627 m 2) in Delft (NL) using Distributed Temperature Sensing for a period of one month. The results show that, from the total of 2.7 MJm −2 of heat released by the pond on an average summer night, 43% of the thermal energy is emitted as longwave radiation, 39% as latent energy, and only 11% as sensible heat. An additional 0.10-0.32 MJm −2 is transferred into the bottom of the lake. Temperature distribution and cooling of the water profile is influenced by weather conditions during the preceding day. This paper provides an insight into a behavioral pattern of an urban pond at night. The results can shed some light into the potential of urban bodies to increase the air temperature of their surroundings at night.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nighttime Cooling of an Urban Pond

2019

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“…As a practicing architect, who have to deal with energy efficiency in real urban condition [1], the heterogeneity makes it difficult to assess the cooling benefits and to isolate the effects of the individual parameters (like shape, surface area, wind condition or solar radiation) under the complex physic process involved in the urban meteorology [2]. As an alternative method, an outdoor numerical model was conducted in the summertime at Széchenyi square in Pécs-Hungary.…”

Section: Methodsmentioning

confidence: 99%

“…Water bodies have the ability to adjust the surrounding microclimate. The temperature mitigating capacity of water bodies in an urban environment can potentially reduce energy consumption, increase outdoor thermal comfort and mitigate the Urban Heat Island (UHI) effect [2]. X. Sihan conducted studies on the water effects of China's traditional Lingnan garden and found that water can effectively adjust the microclimate environment of garden [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Water body effect on microclimate in summertime: A case study from Pécs

Albdour

Baranyai

2019

Pollack Periodica

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The relationship between water body (fountains) scale and climate parameters like wind speed, air temperature, relative humidity, as well as thermal comfort index was modeled and analyzed via Envi-met code. Taking the water impact and factors analysis as a research object, the factors mainly discussed in this research are square area to water-body area ratio and the location of the water element. However, the computational fluid dynamics simulations were conducted on the following scenarios: 3% (original base case), 6%, and 9% of the total square's area, then the outputs of the two simulation results were compared to the original base case. The results revealed that water scale has a slight effect on the micro-climate of the built environment in the summertime in moderately warm-wet climate zone. However, it is beneficial to adjust temperature and humidity in public spaces of central European cities. Nonetheless, the main aim of this paper is to quantitatively investigate the impact of the water bodies on the urban weather parameters and human thermal comfort under the influence of different scale ratios in Pecs-Hungary.

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“…A fundamentação teórica mostra que os corpos de água dentro das cidades têm a capacidade de regular o seu microclima. Da mesma forma, eles também possuem o potencial de mitigar o efeito das ilhas de calor devido ao resfriamento que provocam, fenômeno causado pela evaporação ou pela transferência de calor entre o ar e a água (SYAFII et al, 2016). Kleerekoper,…”

Section: Resíduos Sólidos Urbanosunclassified

Sinergias entre o planejamento energético e o planejamento urbano: estudo de caso do sistema de energia urbano da megacidade de São Paulo

Collaço¹

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Agradeço àqueles que de várias formas contribuíram para a realização da presente pesquisa. Quero aqui expressar minha gratidão a algumas dessas pessoas. Ao meu querido orientador Célio Bermann, cuja parceria já dura seis anos. Obrigada por me aconselhar e acreditar no meu potencial, por me ajudar e sempre encontrar formas de me ensinar, além de demonstrar apoio e suporte. À CAPES, pelo auxílio financeiro concedido durante todo o desenvolvimento desta tese e, principalmente, pela concessão da bolsa PDSE durante um ano, possibilitando o intercâmbio de estudos. Espero que todas e todos tenham essa oportunidade, já que considero essa política pública essencial para a formação de bons pesquisadores. Da mesma forma, agradeço ao programa ERASMUS MUNDUS PLUS e também a Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), nº processo 2015/03804-9. À Professora Sonia Seger, por tudo que representa e desperta, por acreditar na pesquisa, por se esforçar pela educação. Também não posso deixar de agradecer imensamente à Professora Júlia Seixas, por me aceitar em seu grupo de pesquisa, e à Professora Sofia Simões, pela dedicação, respeito, auxílio, parceria, disposição e atenção dedicados a mim e à minha pesquisa; sua atuação teve importância determinante na lapidação deste trabalho. Aos companheiros de Academia Teresa Brás, Luís Dias e Juliana Barbosa; a sua acolhida, trocas, suporte, atenção e respeito me foram essenciais. Ao meu crítico e revisor número um Henrique Kefalás, por sempre esperar de mim o melhor e me cobrar por isso. À Thaís Martins pela caminhada juntas. À minha mãe e ao meu pai, pelo incentivo, exemplo, conforto, amor e carinho. Ao PPGE e ao IEE, pela oportunidade de realização do curso de doutorado e pela infraestrutura oferecida. À secretaria e às funcionárias da Biblioteca Prof. Fonseca Telles, pela paciência e pelo auxílio em todos os momentos em que foram solicitadas.

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Experimental Study on the Influence of Urban Water Body on Thermal Environment at Outdoor Scale Model

Cited by 46 publications

References 14 publications

Nighttime Cooling of an Urban Pond

Nighttime Cooling of an Urban Pond

Water body effect on microclimate in summertime: A case study from Pécs

Sinergias entre o planejamento energético e o planejamento urbano: estudo de caso do sistema de energia urbano da megacidade de São Paulo

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