Planning Strategies of Wind Corridor Forests Utilizing the Properties of Cold Air

Abstract

A wind corridor forest is defined as an urban forest for utilizing the functions of a wind corridor that allow “cool and fresh air (cold air)” generated in forests at night to flow to urban development areas. This study aims to provide planning strategies for implementing a wind corridor forest by analyzing current conditions in Haengbok City (HBC region), Sejong, South Korea. The HBC region had many wind-generating forests (WGF), wind-spreading forests (WSF), and wind-connecting forests (WCF), and secured the connections among the target areas of each wind corridor forest. Despite the favorable conditions for a wind corridor forest, cold air flow showed that there are regions with unfavorable wind conditions in the HBC region. In order to strengthen the functions of a wind corridor forests in the HBC region, four zones were distinguished according to the functional characteristics. Additionally, the planning strategies of a wind corridor forests suitable for each zone were provided, and the strategies for establishing a wind corridor forest were proposed. The results of this study can be used as the fundamental data for establishing guidelines for a wind corridor forest and utilized as resources for selecting regions suitable for a wind corridor forest.

Cooling effect of urban forests on the urban heat island in Seoul, South Korea

“…According to Sung et al [45], wind corridor forests are urban forests that allow the flow of cool and fresh air into urban areas. This improves air pollution and thermal insulation conditions in urban areas with poor climate conditions by introducing cool and fresh air ('kaltluft' in German) from night forests to urban ventilation passages [46][47][48].…”

“…This improves air pollution and thermal insulation conditions in urban areas with poor climate conditions by introducing cool and fresh air ('kaltluft' in German) from night forests to urban ventilation passages [46][47][48]. Wind corridor forests are classified into three divisions according to their role [45]: wind-generating, windconnecting, and wind-spreading forests. Through wind corridor forests, the green area where the cold wind is generated and the linear green area are connected, and the cold wind moves to the city center.…”

Research on Architectural Art and Sustainable Design of Ginling College Historic District (Nanjing, China)

“…For better natural ventilation, the designer set up porches at the south and north ends of the building, and set up corridors in the middle, so that the interior of the building can have natural ventilation (called "draught"), reducing building energy consumption. Especially when there was no air conditioning in the 1920s and 1930s, natural ventilation effectively relieved the stuffy indoors [53,54].…”

Structural Materials, Ventilation Design and Architectural Art of Traditional Buildings in Guangdong, China

“…In addition, the temperature difference between the patio mouth and the patio ground air should be increased as much as possible. The cold alley is another common ventilation design element in traditional buildings and plays a role in improving the thermal environment [16]. A cold alley is a relatively narrow alley formed by the arrangement and combination of buildings or, alternatively, a small corridor left on one side of a building.…”

“…As shown in Figure 8, in Zhan Garden, Zhongshan, there is a shadow area formed by the building on one side of the roadway, and a temperature difference will form in the roadway, thereby creating hot pressure ventilation. Certain buildings have three-entry court- The cold alley is another common ventilation design element in traditional buildings and plays a role in improving the thermal environment [16]. A cold alley is a relatively narrow alley formed by the arrangement and combination of buildings or, alternatively, a small corridor left on one side of a building.…”