The effect of the short wave radiation and its reflected components on the mean radiant temperature: modelling and preliminary experimental results

Marino, Concettina; Nucara, Antonino; Pietrafesa, Matilde; Polimeni, Erika

doi:10.1016/j.jobe.2016.11.008

Cited by 43 publications

(12 citation statements)

References 28 publications

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“…Recently, several methods have been proposed to estimate MRT in urban outdoor spaces [38][39][40][41]. Few studies have been conducted to predict indoor MRT as well, such as in office spaces [42] or for a subject exposed to incoming solar radiation [35,43].…”

Section: Mean Radiant Temperaturementioning

confidence: 99%

Predictive modelling of thermal comfort using physiological sensing

Chaudhuri¹

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Your presence makes life beautiful! I would also like to thank my friends at the dance club-I am grateful to have friends I can share my passion for dance with. I also thank all the friends that I have made during my 3 years as a member of the NTU-GSA Career and Entrepreneurship Committee-I am grateful for having had a platform for public-speaking and collaborative service towards the graduate student community. I would like to acknowledge the financial support from the Energy Research Institute @ NTU (ERIAN) at Nanyang Technological University Singapore and the Ministry of Education, Government of Singapore; and administrative support from the Interdisciplinary Graduate School. This work is partially supported by Singapore's National Research Foundation under NRF2011NRFCRP001-090. Thanks to Minying Huang and Lily from ERIAN for your continuous help and support with the administrative aspects. Especially, I would like to offer my warmest heartfelt gratitude to my dearest loving parents, Mrs. Kalpana Chaudhuri and Mr. Bhabatosh Chaudhuri. Thank you for your unconditional love and support. Special thanks to you for always inspiring by example to reach greater heights in life. You both are my rock, my strength, my inspiration! iv Contents Abstract i Acknowledgements iii Table of Contents v List of Tables ix List of Figures xiii Symbols and Acronyms xvii

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Section: Mean Radiant Temperaturementioning

confidence: 99%

Predictive modelling of thermal comfort using physiological sensing

Chaudhuri¹

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“…Four black-globe thermometers were used to measure the mean radiant temperature (MRT) of the irradiated and unirradiated areas in the room. The convective heat transfer by air movement was ignored in the measurement of the MRT because the air velocity was slow (Marino et al 2017b). An indoor Air Quality System (JT-IAQ 2.3) was used to measure the indoor environmental parameters, including the air temperature, air velocity, relative humidity, and black-globe temperature at an interval of 30 minutes.…”

Section: Measurement Setupmentioning

confidence: 99%

Thermal comfort in winter incorporating solar radiation effects at high altitudes and performance of improved passive solar design—Case of Lhasa

Huang

Kang

2020

Build. Simul.

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The solar incidence on an indoor environment and its occupants has significant impacts on indoor thermal comfort. It can bring favorable passive solar heating and can result in undesired overheating (even in winter). This problem becomes more critical for high altitudes with high intensity of solar irradiance, while received limited attention. In this study, we explored the specific overheating and rising thermal discomfort in winter in Lhasa as a typical location of a cold climate at high altitudes. First, we evaluated the thermal comfort incorporating solar radiation effect in winter by field measurements. Subsequently, we investigated local occupant adaptive responses (considering the impact of direct solar irradiance). This was followed by a simulation study of assessment of annual based thermal comfort and the effect on energy-saving potential by current solar adjustment. Finally, we discussed winter shading design for high altitudes for both solar shading and passive solar use at high altitudes, and evaluated thermal mass shading with solar louvers in terms of indoor environment control. The results reveal that considerable indoor overheating occurs during the whole winter season instead of summer in Lhasa, with over two-thirds of daytime beyond the comfort range. Further, various adaptive behaviors are adopted by occupants in response to overheating due to the solar radiation. Moreover, it is found that the energy-saving potential might be overestimated by 1.9 times with current window to wall ratio requirements in local design standards and building codes due to the thermal adaption by drawing curtains. The developed thermal mass shading is efficient in achieving an improved indoor thermal environment by reducing overheating time to an average of 62.2% during the winter and a corresponding increase of comfort time.

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“…Moreover, diffuse and direct component of solar radiation may affect the main radiant temperature and the plane temperature asymmetry with different intensity [15][16][17][18], due to their different behavior inside indoor environment.…”

Section: Effect Of the Solar Radiationmentioning

confidence: 99%

The effect of the climatic condition on the radiant asymmetry

Marino¹,

Misiani²,

Nucara³

et al. 2017

IJHT

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This paper analyzes the influence of solar radiation, considering both its direct and diffuse component, on the local thermal comfort of subjects in indoor environments. In fact, as well as too hot or too cold climatic conditions may cause global thermal discomfort, an unwanted cooling or heating of a particular confined area of the body may cause local thermal discomfort, which may occur for vertical air temperature differences, unsuitable temperatures of the floor, drafts and radiant asymmetries. In this context, this work is focused on radiant asymmetry issues and it aims to analyze the radiant asymmetry dependence on outdoor climate parameters, with special regard to the solar radiation. To this purpose, a specific experimental campaign of measurements was conducted. The analysis of the results shows that the solar radiation alters the radiant field and produces a high radiant asymmetry in correspondence of the points of the environment directly irradiated by sunrays.

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The effect of the short wave radiation and its reflected components on the mean radiant temperature: modelling and preliminary experimental results

Cited by 43 publications

References 28 publications

Predictive modelling of thermal comfort using physiological sensing

Predictive modelling of thermal comfort using physiological sensing

Thermal comfort in winter incorporating solar radiation effects at high altitudes and performance of improved passive solar design—Case of Lhasa

The effect of the climatic condition on the radiant asymmetry

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