The difference between the mean radiant temperature and the air temperature within indoor environments: A case study during summer conditions

Walikewitz, Nadine; Jänicke, Britta; Langner, Marcel; Meier, Fred; Endlicher, Wilfried

doi:10.1016/j.buildenv.2014.11.004

Cited by 155 publications

(65 citation statements)

References 35 publications

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“…The most problematic variable in the course of human-biometeorological comfort assessment of the mean radiant temperature. Studies have concluded that the differences are, in most cases, negligible (20).…”

Section: Preliminary Assessment -Reference Model and Simulationsmentioning

confidence: 99%

Estrategia pos-ocupación para mejorar el confort térmico en vivienda social en climas tropicales de montaña: un caso de estudio en Bogotá, Colombia

et al. 2019

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Este estudio expone deficiencias en el confort térmico en vivienda social en Bogotá. Se presume que estas son el resultado de la falta de políticas, investigación y conocimiento sobre el tema. Este problema puede ser generalizado en edificios residenciales y repercutir en problemas de salud y baja satisfacción de los ocupantes, así como aumentos en el consumo de energía y la emisión de CO2. Sin embargo, hay muy poca información disponible. Este artículo contribuye al estudio, evaluación y búsqueda de soluciones a través de un caso de estudio, simulaciones térmicas dinámicas y trabajo de campo. Este enfoque puede ser replicado y adaptado para otros contextos con climas tropicales de montaña. El trabajo de campo se centró en mejorar la masa térmica de la fachada y el rendimiento de las ventanas a través de dos intervenciones. Estas demostraron ser rentables y prácticas con miras a ser implementadas directamente por los ocupantes.

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Section: Preliminary Assessment -Reference Model and Simulationsmentioning

confidence: 99%

Estrategia pos-ocupación para mejorar el confort térmico en vivienda social en climas tropicales de montaña: un caso de estudio en Bogotá, Colombia

et al. 2019

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“…The individual heat flows in Equation (2) depend on several parameters; air temperature, humidity level, air velocity, mean radiant temperature (MRT), and two human parameters such as metabolic rate and clothing insulation rate. The assumptions related to these parameters made for this study are presented in Table 7 based on ASHRAE Standard 55-2010 and other reference research [9][10][11][24][25][26][27][28][29][30][31][32]. Especially, according to some research, it has been assumed that the MRT can be equal to the indoor air temperature, especially for the indoor thermal studies because the calculation of the MRT was complicated as well as the differences of wall surface temperatures and radiant fluxes were not significant [26][27][28][29][30][31][32].…”

Section: Evaluation Of Effects On Indoor Thermal Comfortmentioning

confidence: 99%

Evaluation of Effects of the Humidity Level-Based Auto-Controlled Centralized Exhaust Ventilation Systems on Thermal Comfort of Multi-Family Residential Buildings in South Korea

et al. 2019

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Building air-tightness has been increased to make energy efficient buildings. However, various indoor air quality issues can be caused by high building air-tightness because it allows low air and moisture transmission through building envelop. In order to solve and prevent these issues, mechanical ventilation systems can be used to control the indoor humidity level. The purpose of this paper is to evaluate the performances of the Relative Humidity (RH)-sensor based auto-controlled centralized exhaust ventilation systems to manage indoor air quality and thermal comfort of multi-family residential buildings in South Korea. A series of field tests were performed for different target zones and for various moisture source scenarios. As a result, it was found that the auto-controlled centralized exhaust ventilation systems were able to control indoor air quality and to maintain the zones thermal comfort faster than the baseline cases that did not operate exhaust vents. The results presented in this paper can show the potential and the feasibility of the auto-controlled centralized exhaust ventilation systems for multi-family residential buildings in South Korea. It is expected that the results presented in this paper would be useful for building owners, engineers, and architects when designing building systems.

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“…The accuracy of the PMV values is adequate only when the difference between the mean radiant temperature and the air temperature is less than 5 °C [20,50]. The difference between the mean radiant temperature and the air temperature within indoor environments is negligible during most periods [51]. For the external walls, 2-3 mm acrylic render on 7-mm fibrocement sheets were fixed on a timber stud frame, and insulated by R1.5 glass wool batts insulation.…”

Section: Sustainability 2018 10 X For Peer Review 9 Of 17mentioning

confidence: 99%

The Impact of the Thermal Comfort Models on the Prediction of Building Energy Consumption

et al. 2018

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Building energy assessment software/programs use various assumptions and types of thermal comfort models to forecast energy consumption. This paper compares the results of using two major thermal comfort models (adaptive thermal comfort and the predicted mean vote (PMV) adjusted by the expectancy factor) to examine their influence on the prediction of the energy consumption for several full-scale housing experimental modules constructed on the campus of the University of Newcastle, Australia. Four test modules integrating a variety of walling types (insulated cavity brick (InsCB), cavity brick (CB), insulated reverse brick veneer (InsRBV), and insulated brick veneer (InsBV)) were used for comparing the time necessary for cooling and heating to maintain internal thermal comfort for both models. This research paper exhibits the benefits of adopting the adaptive thermal model for building structures. It shows the effectiveness of this model in helping to reduce energy consumption, increasing the thermal comfort level for the buildings, and therefore reducing greenhouse emissions.

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The difference between the mean radiant temperature and the air temperature within indoor environments: A case study during summer conditions

Cited by 155 publications

References 35 publications

Estrategia pos-ocupación para mejorar el confort térmico en vivienda social en climas tropicales de montaña: un caso de estudio en Bogotá, Colombia

Estrategia pos-ocupación para mejorar el confort térmico en vivienda social en climas tropicales de montaña: un caso de estudio en Bogotá, Colombia

Evaluation of Effects of the Humidity Level-Based Auto-Controlled Centralized Exhaust Ventilation Systems on Thermal Comfort of Multi-Family Residential Buildings in South Korea

The Impact of the Thermal Comfort Models on the Prediction of Building Energy Consumption

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