Thermal comfort modelling of body temperature and psychological variations of a human exercising in an outdoor environment

Vanos, Jennifer; Warland, J.; Gillespie, T. J.; Kenny, Natasha

doi:10.1007/s00484-010-0393-2

Cited by 67 publications

(32 citation statements)

References 54 publications

(98 reference statements)

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“…The CRT measures a value of radiant temperature that is then used to provide a value of R abs (Wm −2 ), which is an integration of the total solar and terrestrial radiation fluxes that are absorbed by a cylindrical body (Kenny et al 2008). The CRT was designed by Brown and Gillespie (1986) and was further updated by Krys and Brown (1990) and Kenny et al (2008), with outdoor applications by Kenny et al (2009a) and Vanos et al (2012a).…”

Section: Field Testsmentioning

confidence: 99%

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The influence of surface type on the absorbed radiation by a human under hot, dry conditions

Hardin

Vanos

2017

Int J Biometeorol

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Given the predominant use of heat-retaining materials in urban areas, numerous studies have addressed the urban heat island mitigation potential of various "cool" options, such as vegetation and high-albedo surfaces. The influence of altered radiational properties of such surfaces affects not only the air temperature within a microclimate, but more importantly the interactions of long-and shortwave radiation fluxes with the human body. Minimal studies have assessed how cool surfaces affect thermal comfort via changes in absorbed radiation by a human (R abs ) using real-world, rather than modeled, urban field data. The purpose of the current study is to assess the changes in the absorbed radiation by a human-a critical component of human energy budget models-based on surface type on hot summer days (air temperatures >38.5 • C). Field tests were conducted using a high-end microclimate station under predominantly clear sky conditions over ten surfaces with higher sky view factors in Lubbock, Texas. Three methods were used to measure and estimate R abs : a cylindrical radiation thermometer (CRT), a net radiometer, and a theoretical estimation model. Results over dry surfaces suggest that the use of high-albedo surfaces to reduce overall urban heat gain may not improve acute human thermal comfort in clear conditions due to increased reflected radiation. Further, the use of low-cost instrumentation, such as the CRT, shows potential in quantifying radiative heat loads within urban areas at temporal scales of 5-10 min or greater, yet further research is needed. Fine-scale radiative information in urban areas can aid in the decision-making process for urban heat mitigation using non-vegetated urban surfaces, with surface type choice is dependent on the need for short-term thermal comfort, or reducing cumulative heat gain to the urban fabric.

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Section: Field Testsmentioning

confidence: 99%

“…17, summing the energy streams towards and away from the body utilizing the COMFA energy budget model (Kenny et al 2009a;Brown and Gillespie 1986;Vanos et al 2012a).…”

Section: Energy Budget Analysismentioning

confidence: 99%

The influence of surface type on the absorbed radiation by a human under hot, dry conditions

Hardin

Vanos

2017

Int J Biometeorol

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“…As a conscious indicator of thermal balance, thermal comfort is defined as that condition of mind which expresses satisfaction with the surrounding thermal environment, and it is currently considered as the result of the interaction between physical, physiological and psychological factors (48,111,156,233,295). The physical factors refer to the characteristics of the environment to which individuals are exposed (e.g.…”

Section: Behavioral Temperature Regulationmentioning

confidence: 99%

Neurophysiology of Skin Thermal Sensations

Filingeri

2016

Comprehensive Physiology

112

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Undoubtedly, adjusting our thermoregulatory behavior represents the most effective mechanism to maintain thermal homeostasis and ensure survival in the diverse thermal environments that we face on this planet. Remarkably, our thermal behavior is entirely dependent on the ability to detect variations in our internal (i.e. body) and external environment, via sensing changes in skin temperature and wetness. In the past 30 years, we have seen a significant expansion of our understanding of the molecular, neuroanatomical and neurophysiological mechanisms that allow humans to sense temperature and humidity. The discovery of temperature-activated ion channels which gate the generation of action potentials in thermosensitive neurons, along with the characterization of the spino-thalamo-cortical thermosensory pathway, and the development of neural models for the perception of skin wetness, are only some of the recent advances which have provided incredible insights on how biophysical changes in skin temperature and wetness are transduced into those neural signals which constitute the physiological substrate of skin thermal and wetness sensations. Understanding how afferent thermal inputs are integrated and how these contribute to behavioral and autonomic thermoregulatory responses under normal brain function is critical to determine how these mechanisms are disrupted in those neurological conditions which see the concurrent presence of afferent thermosensory abnormalities and efferent thermoregulatory dysfunctions. Furthermore, advancing the knowledge on skin thermal and wetness sensations is crucial to support the development of neuro-prosthetics. In light of the above, this review will focus on the peripheral and central neurophysiological mechanisms underpinning skin thermal and wetness sensations in humans.

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“…Therefore, the physiological and psychological impact should have been taken into account when designing green spaces. Previous studies described thermal comfort as a fundamental parameter, as well as how heat stress/thermal discomfort affects these outdoor activities (Vanos, Warland, Gillespie, & Kenny, 2010). These studies explained the consequences, implication and outcomes of how heat stress affected human life.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Outdoor Thermal Comfort at an Urban Park in Malaysia

Nasir

Ahmad

Zain-Ahmed

2018

AjBeS

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This paper clarifies the perceptive and adaptive mechanisms involved in an outdoor thermal comfort in hot, and humid condition. The method of the study was through microclimate measurement coupled with structured interviews of urban park users. The objective of this study is to identify the impacts of weather and personal factors on respondents' perceptual and sensation estimations. The findings on the significant influences of microclimate parameters and personal factors on the participants' perceptions of outdoor urban places are discussed. This study shows the respondents' thermal adaptation from physiological and psychological perspectives. The significance of the findings showed the importance of a sustainable urban park for continued use by future communities.

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Thermal comfort modelling of body temperature and psychological variations of a human exercising in an outdoor environment

Cited by 67 publications

References 54 publications

The influence of surface type on the absorbed radiation by a human under hot, dry conditions

The influence of surface type on the absorbed radiation by a human under hot, dry conditions

Neurophysiology of Skin Thermal Sensations

Adaptive Outdoor Thermal Comfort at an Urban Park in Malaysia

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