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E. Stache
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Implementation of a microclimate design model in the early design of new building projects
Case study Ecohof Noorderveer in the Netherlands
Given the ongoing global urbanization and the rise of heat, flooding, and drought in cities, the integration of climate adaptive measures based on “ecosystem functions and services” becomes imperative in design. This study details the implementation process of a microclimate design model in the design and retrofitting of the housing project Ecohof Noorderveer in Wormerveer, the Netherlands. The model, which quantifies local urban heat and mitigating measures through ecosystem functionalities, was incorporated into the program of requirements. The design process followed a research-by-design trajectory, involving iterative creative collaboration among all stakeholders, including future residents, the municipality, the water board, and the architect. The research employed the CFIR method to compare anticipated implementation outcomes with actual results. The findings suggest that introducing the microclimate design model into the program of requirements proved beneficial for the implementation process in the early design stage. The research-by-design approach was also deemed helpful, contingent on careful involvement of all participants in the knowledge-sharing process. This implementation method demonstrates significant potential for scaling up to standard urban development projects.
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Given the ongoing global urbanization and the rise of heat, flooding, and drought in cities, the integration of climate adaptive measures based on “ecosystem functions and services” becomes imperative in design. This study details the implementation process of a microclimate design model in the design and retrofitting of the housing project Ecohof Noorderveer in Wormerveer, the Netherlands. The model, which quantifies local urban heat and mitigating measures through ecosystem functionalities, was incorporated into the program of requirements. The design process followed a research-by-design trajectory, involving iterative creative collaboration among all stakeholders, including future residents, the municipality, the water board, and the architect. The research employed the CFIR method to compare anticipated implementation outcomes with actual results. The findings suggest that introducing the microclimate design model into the program of requirements proved beneficial for the implementation process in the early design stage. The research-by-design approach was also deemed helpful, contingent on careful involvement of all participants in the knowledge-sharing process. This implementation method demonstrates significant potential for scaling up to standard urban development projects.
Journal article
(2022)
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E. (Eva) Stache, B. (Bart) Schilperoort, M. (Marc) Ottele, H.M. (Henk) Jonkers
The urban heat island, is a serious threat for the urban well-being, and can be determined by the local energy balance. The surface energy balance, with respect to incoming radiative energy and subsequent partitioning into reflected energy (albedo), absorbed energy and further partitioning of latter into convectional heat (QH), radiative heat (QR) and latent heat (QE) by using commonly applied urban materials and vegetation types, was therefore experimentally quantified in this study. In agreement with previous studies it was found that materials convert most of absorbed energy into convectional heat (>92%) while vegetation channels a substantial part of absorbed radiative energy into latent heat (27–50%). It is for the first time experimentally demonstrated that significant differences in thermal behaviour between different types of urban vegetation surfaces occur. Of the investigated vegetation types ivy and moss showed respectively the highest (0.10) and lowest (0.07) albedo, but sedum and moss channelled respectively lowest (27%) and highest (50%) percentage of the absorbed radiative energy into latent heat production. Of the four investigated plant types, moss appeared most effective in preventing UHI, converting only 50% of incoming radiative energy into convectional heat, while sedum was least effective converting 73% of incoming radiative energy into convectional heat. These quantitative measurements show that strategic use of specific types of urban vegetation surfaces, instead of commonly applied building materials, can be an effective measure for mitigation of UHI leading to improved climate resilient cities.
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The urban heat island, is a serious threat for the urban well-being, and can be determined by the local energy balance. The surface energy balance, with respect to incoming radiative energy and subsequent partitioning into reflected energy (albedo), absorbed energy and further partitioning of latter into convectional heat (QH), radiative heat (QR) and latent heat (QE) by using commonly applied urban materials and vegetation types, was therefore experimentally quantified in this study. In agreement with previous studies it was found that materials convert most of absorbed energy into convectional heat (>92%) while vegetation channels a substantial part of absorbed radiative energy into latent heat (27–50%). It is for the first time experimentally demonstrated that significant differences in thermal behaviour between different types of urban vegetation surfaces occur. Of the investigated vegetation types ivy and moss showed respectively the highest (0.10) and lowest (0.07) albedo, but sedum and moss channelled respectively lowest (27%) and highest (50%) percentage of the absorbed radiative energy into latent heat production. Of the four investigated plant types, moss appeared most effective in preventing UHI, converting only 50% of incoming radiative energy into convectional heat, while sedum was least effective converting 73% of incoming radiative energy into convectional heat. These quantitative measurements show that strategic use of specific types of urban vegetation surfaces, instead of commonly applied building materials, can be an effective measure for mitigation of UHI leading to improved climate resilient cities.
Bijna alle stedelijke klimatologische problemen zijn te herleiden naar het ontbreken van ecosysteemdiensten. Dat blijkt uit onderzoek van de TU Delft Faculteit Civiele Techniek, afdeling Materialen en Duurzaamheid. ‘Ook vonden we dit gebrek medeverantwoordelijk voor veel stedelijke sociale problemen,’ aldus de auteurs. Op basis van het onderzoek ontwikkelden zij een module die inzicht verschaft in de verbeteringen die ecosysteemdiensten ons bieden.
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Bijna alle stedelijke klimatologische problemen zijn te herleiden naar het ontbreken van ecosysteemdiensten. Dat blijkt uit onderzoek van de TU Delft Faculteit Civiele Techniek, afdeling Materialen en Duurzaamheid. ‘Ook vonden we dit gebrek medeverantwoordelijk voor veel stedelijke sociale problemen,’ aldus de auteurs. Op basis van het onderzoek ontwikkelden zij een module die inzicht verschaft in de verbeteringen die ecosysteemdiensten ons bieden.
Examining the actual major environmental and social problems of the modern city, e.g., pollution, difficulties in food and water supply, poverty or homelessness, this study argues that insights from the field of ecology could offer structural solutions. In particular, specific ecosystem services could be used to fight/solve specific urban problems. Today, on a large scale, only a few different ecosystem services from outside the urban area are used as ecosystems, as biotopes are insufficiently available inside the city boundary. Their physical absence obstructs the use of their benefits and leaves an important potential of urban ecological space unused. Most vegetation was banned from cities during urban history, what may have been the fundamental cause of several major urban problems emerging today. Therefore, the solving potential was analyzed of 20 ecological services if consistently located inside the urban boundary. According to the results, respectively, 14 and 7 ecosystem services can be linked as solutions to 10 environmental and 8 social problems eminent in contemporary cities. This study, therefore, concludes that structural integrating ecosystem services in the built-up urban space: (1) could solve major urban environmental and social problems; (2) improve urban sustainability; (3) revitalize degraded urban areas.
...
Examining the actual major environmental and social problems of the modern city, e.g., pollution, difficulties in food and water supply, poverty or homelessness, this study argues that insights from the field of ecology could offer structural solutions. In particular, specific ecosystem services could be used to fight/solve specific urban problems. Today, on a large scale, only a few different ecosystem services from outside the urban area are used as ecosystems, as biotopes are insufficiently available inside the city boundary. Their physical absence obstructs the use of their benefits and leaves an important potential of urban ecological space unused. Most vegetation was banned from cities during urban history, what may have been the fundamental cause of several major urban problems emerging today. Therefore, the solving potential was analyzed of 20 ecological services if consistently located inside the urban boundary. According to the results, respectively, 14 and 7 ecosystem services can be linked as solutions to 10 environmental and 8 social problems eminent in contemporary cities. This study, therefore, concludes that structural integrating ecosystem services in the built-up urban space: (1) could solve major urban environmental and social problems; (2) improve urban sustainability; (3) revitalize degraded urban areas.