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Thermal assessment of heat mitigation strategies: The case of Portland State University, Oregon, USA

2013; Elsevier BV; Volume: 73; Linguagem: Inglês

10.1016/j.buildenv.2013.12.006

1873-684X

Mohammad Taleghani, David J. Sailor, Martin Tenpierik, Andy van den Dobbelsteen,

Urban Green Space and Health

Courtyard vegetation, high albedo surfaces, and courtyard ponds were investigated as potential heat mitigation strategies using field measurements and simulations in a university campus environment. The investigation was performed during a summer period in the temperate climate of Portland, Oregon, USA. In a comparison of seven locations on the campus, the maximum park cooling island effect recorded was 5.8 °C between the heavily treed campus park and a nearby parking lot with asphalt pavement. Simulations of courtyards with vegetation and a water pond showed 1.6 °C and 1.1 °C air temperature reduction, respectively. Changing the albedo of the pavement in a bare courtyard from 0.37 (black) to 0.91 (white) led to 2.9 °C increase of mean radiant temperature and 1.3 °C decrease of air temperature.