Field studies on human thermal comfort — An overview

Mishra, Asit Kumar; Mopuri, Ramgopal

doi:10.1016/j.buildenv.2013.02.015

Cited by 246 publications

(122 citation statements)

References 107 publications

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“…Environmental factors that contribute to human thermal comfort include environmental temperature (though quite vaguely defined), humidity, wind speed, radiative exposure, ambient evaporative and sensible fluxes, etc. ; a latest survey on this topic can be found in [15]. The use of reflective materials mainly modifies the environmental temperature and radiative exposure, which in turn lead to the change of thermal comfort level.…”

Section: Thermal Comfort and Health Risk Considerationmentioning

confidence: 99%

“…While a significant spatial and temporal variation is observed in the UHI intensity, many cities show a magnitude of 5-11 o C by mid-morning [4]. Elevated environmental temperatures in urban areas lead to rise of energy consumption for cooling [5][6][7][8], increase of peak electricity demand [9], degradation of air quality [10][11][12][13], and deterioration of thermal stress on residents [14,15]. In particular, UHI 6 temperature, if not negligible [21,53].…”

Section: Introductionmentioning

confidence: 99%

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Environmental impacts of reflective materials: Is high albedo a ‘silver bullet’ for mitigating urban heat island?

Yang

Wang

Kaloush

2015

Renewable and Sustainable Energy Reviews

193

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Studies on urban heat island (UHI) have been more than a century after the phenomenon was first discovered in the early 1800s. UHI emerges as the source of many urban environmental problems and exacerbates the living environment in cities. Under the challenges of increasing urbanization and future climate changes, there is a pressing need for sustainable adaptation/mitigation strategies for UHI effects, one popular option being the use of reflective materials. While it is introduced as one effective method to reduce temperature and energy consumption in cities, its impacts on multi-dimensional environmental sustainability and large-scale non-local effect are inadequately explored. This paper provides a synthetic overview of potential environmental impacts of reflective materials at a variety of scales, ranging from energy load on a single building to regional hydroclimate. The review shows that mitigation potential of reflective materials depends on a portfolio of factors, including building characteristics, urban environment, meteorological and geographical conditions, to name a few.Precaution needs to be exercised by city planners and policy makers for large-scale deployment of reflective materials before their environmental impacts, especially on regional hydroclimates, are better understood. In general, it is recommended that optimal strategy for UHI needs to be determined on a city-by-city basis, rather than adopting a "one-solution-fits-all" strategy.

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Section: Thermal Comfort and Health Risk Considerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Environmental impacts of reflective materials: Is high albedo a ‘silver bullet’ for mitigating urban heat island?

Yang

Wang

Kaloush

2015

Renewable and Sustainable Energy Reviews

193

View full text Add to dashboard Cite

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“…In parallel, the studies of urban microclimate including wind and thermal environments, which contributes to human health risks when being exposed to, have received increasing attention in a number of countries, which can be referred to several overviews given by Mishra and Ramgopal [6], Taleghani et al [7] and Chen and Ng [8].…”

Section: Introductionmentioning

confidence: 99%

“…The studies of thermal comfort have been examined in a variety of environments, such as an indoor environment [6,9,10], housing blocks [11], outdoor apartment blocks [12], a street canyon [13][14][15], and university campus [16][17][18][19] and Xi et al [20], city center [21]. Personal factors are more concerned with people's perception of thermal comfort in outdoor environment collected through surveys [22,23].…”

Section: Introductionmentioning

confidence: 99%

Modeling Thermal Comfort and Optimizing Local Renewal Strategies—A Case Study of Dazhimen Neighborhood in Wuhan City

et al. 2015

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Abstract:Modeling thermal comfort provides quantitative evidence and parameters for effective and efficient urban planning, design, and building construction particularly in a dense and narrow inner city, which has become one of many concerns for sustainable urban development. This paper aims to develop geometric and mathematical models of wind and thermal comfort and use them to examine the impacts of six small-scale renewal strategies on the wind and thermal environment at pedestrian level in Dazhimen neighborhood, Wuhan, which is a typical case study of urban renewal project in a mega-city. The key parameters such as the solar radiation, natural convection, relative humidity, ambient crosswind have been incorporated into the mathematical models by using user-defined-function (UDF) method. Detailed temperature and velocity distributions under different strategies have been compared for the optimization of local renewal strategies. It is concluded that five rules generated from the simulation results can provide guidance for building demolition and OPEN ACCESSSustainability 2015, 7 3110 reconstruction in a neighborhood and there is no need of large-scale demolition. Particularly, combining the local demolition and city virescence can both improve the air ventilation and decrease the temperature level in the study area.

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“…However, the linear relation found in the current study shows a larger permissible variation with the outdoor climate: a = 0.175 compared with 0.11 in van der Linden et al (2006) and a = 0.04 in de Dear and Brager (1998). However, a (Mishra & Ramgopal, 2013). This implies an important limitation of this study: some cultural variations may occur in different parts of the world due to different expectations and, therefore, extrapolation of the results to other climate regions should be done with care.…”

Section: Construction Of Adaptive Temperature Limitsmentioning

confidence: 92%

Adaptive temperature limits for air-conditioned museums in temperate climates

Kramer

Schellen

2017

Building Research & Information

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Indoor temperature (T ) and relative humidity (RH) are important for collection preservation and thermal comfort in museums. In the 20th century, the notion evolved that T and RH need to be stringently controlled, often resulting in excessive energy consumption. However, recent studies have shown that controlled fluctuations are permissible, enabling improved energy efficiency. Consequently, the thermal comfort requirements are increasingly important to determine temperature limits, but knowledge is limited. Therefore, a thermal comfort survey study and indoor measurements were conducted at Hermitage Amsterdam museum in Amsterdam, the Netherlands for one year, including: (1) monitoring of existing conditions (T = 21°C, RH = 50%); and (2) an intervention in which T is controlled based on an adaptive comfort approach (T = 19.5-24°C, RH = 50%). The results show that the thermal comfort of the existing conditions is far from optimum; visitors feel too cool in summer and slightly too warm in winter. The adaptive temperature limits were developed to improve thermal comfort significantly without endangering the collection, thereby saving energy. Furthermore, facilitating visitors to adapt their clothing may contribute to enlarging the temperature bandwidth and improve (individual) thermal comfort.

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Field studies on human thermal comfort — An overview

Cited by 246 publications

References 107 publications

Environmental impacts of reflective materials: Is high albedo a ‘silver bullet’ for mitigating urban heat island?

Environmental impacts of reflective materials: Is high albedo a ‘silver bullet’ for mitigating urban heat island?

Modeling Thermal Comfort and Optimizing Local Renewal Strategies—A Case Study of Dazhimen Neighborhood in Wuhan City

Adaptive temperature limits for air-conditioned museums in temperate climates

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