Evaporative misters for urban cooling and comfort: effectiveness and motivations for use

Vanos, Jennifer; Wright, Mary K.; Kaiser, Alana; Middel, Ariane; Ambrose, Harrison; Hondula, David M.

doi:10.1007/s00484-020-02056-y

Cited by 24 publications

(14 citation statements)

References 44 publications

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“…Seven articles evaluated public misting stations designed to cool places and people via water droplets during extreme heat events. Misting stations were located in Osaka, Japan [31], Ancona and Rome, Italy [32][33][34], Singapore [35], Antofagasta, Chile [36], and Tempe, Arizona [37]. Evaluations were supported by a variety of metrics captured by sensors, indices, meteorological data, and comfort surveys administered to participants, and they measured participants' physiological responses to the misting system.…”

Section: Misting Stationsmentioning

confidence: 99%

“…The study in Osaka, Japan, set up a spray station consisting of eight nozzles attached to a fan spraying mist on the participating students in a shaded-tree area [31]. In Tempe, Arizona, USA, researchers focused on the cooling capacity of the misting stations installed in shaded, compared to sunny, areas at five restaurants with outdoor seating, where temperatures often exceed 43 • C in the summer [37].…”

Section: Misting Station Designmentioning

confidence: 99%

“…The UTCI and PET require data collection on ambient air temperature, relative humidity, wind speed, globe temperature, and pressure, as well as inputs for standardized personal human parameters (average height, clothing, etc.) [36,37].…”

Section: Misting Station Evaluation Protocolsmentioning

confidence: 99%

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A Literature Review of Cooling Center, Misting Station, Cool Pavement, and Cool Roof Intervention Evaluations

et al. 2022

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Heat islands and warming temperatures are a growing global public health concern. Although cities are implementing cooling interventions, little is known about their efficacy. We conducted a literature review of field studies measuring the impact of urban cooling interventions, focusing on cooling centers, misting stations, cool pavements, and cool or green roofs. A total of 23 articles met the inclusion criteria. Studies of cooling centers measured the potential impact, based on evaluations of population proximity and heat-vulnerable populations. Reductions in temperature were reported for misting stations and cool pavements across a range of metrics. Misting station use was evaluated with temperature changes and user questionnaires. The benefits and disadvantages of each intervention are presented, and metrics for evaluating cooling interventions are compared. Gaps in the literature include a lack of measured impacts on personal thermal comfort, limited documentation on intervention costs, the need to standardize temperature metrics, and evaluation criteria.

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Section: Misting Stationsmentioning

confidence: 99%

Section: Misting Station Designmentioning

confidence: 99%

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A Literature Review of Cooling Center, Misting Station, Cool Pavement, and Cool Roof Intervention Evaluations

et al. 2022

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“…By adopting the same model in an urban heat island adaptation measures study covering a development area of 35.5 ha in France, a water spray facility (blue technology) was adopted as one of the major adaptation measures [18]. Recently, an observations-based study on evaporative misters has highlighted the efficiency of this strategy in an urban setting [19]. Despite the above studies, it is unclear whether the water spraying system is an effective measure to provide thermally comfortable urban built environments under the influence of a future climate.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Outdoor Thermal Comfort by Water Spraying in a High-Density Urban Environment under the Influence of a Future (2050) Climate

2021

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Adaptation to prepare for adverse climate change impacts in the context of urban heat islands and outdoor thermal comfort (OTC) is receiving growing concern. However, knowledge of quantitative microclimatic conditions within the urban boundary layer in the future is still lacking, such that the introduction of adequate adaptation measures to increase OTC is challenging. To investigate the cooling performance of a water spraying system in a sub-tropical compact and high-rise built environment in summer under the influence of future (2050) climatic conditions, results from two validated models (Weather Research and Forecast (WRF) and ENVI-met models) have been used and analyzed. Our results indicate that the spraying system provides cooling of 2–3 °C for ambient air temperature at the pedestrian-level of the urban canyons considered here, which benefits pedestrians. However, improvement of the OTC in terms of the physiological equivalent temperature (PET—a better indicator of human thermal sensation) was noticeable (e.g., <42 °C or from very hot to hot) when the urban canyon was orientated parallel to the prevailing wind direction only. This implies that in order to improve city resilience in terms of heat stress, more holistic adaptation measures in urban planning are needed. This includes the introduction of more breezeways and building disposition to facilitate the urban ventilation, as well as urban tree arrangement and sunshades to reduce direct solar radiation to plan for the impact of future climate change.

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“…Similarly, work herein by Dzyuban et al (2021) also assesses thermal perception, yet in the hot and dry climate of Phoenix, Arizona, USA, and associates these responses with public transit infrastructure (e.g., shade, vegetation). Shade and climate type also played a crucial role in results from Vanos et al (2021), whereby evaporative misters plus shade was the most impactful solution for outdoor thermal comfort in the hot, dry climate of Tempe, AZ, USA, with thermal comfort an important motivation of business mister use.…”

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confidence: 99%

Advancing biometeorological insights: a third special issue from the students and new professionals of the ISB

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Lees

2022

Int J Biometeorol

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Evaporative misters for urban cooling and comfort: effectiveness and motivations for use

Cited by 24 publications

References 44 publications

A Literature Review of Cooling Center, Misting Station, Cool Pavement, and Cool Roof Intervention Evaluations

A Literature Review of Cooling Center, Misting Station, Cool Pavement, and Cool Roof Intervention Evaluations

Improvement of the Outdoor Thermal Comfort by Water Spraying in a High-Density Urban Environment under the Influence of a Future (2050) Climate

Advancing biometeorological insights: a third special issue from the students and new professionals of the ISB

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