Features of Materials versus Thermal Comfort in a Passive Building

Dudzińska, Anna; Kotowicz, Anna

doi:10.1016/j.proeng.2015.06.125

Cited by 13 publications

(8 citation statements)

References 3 publications

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“…In this study, thermal comfort standards were assessed according to the ISO Standard 7730. This standard suggests the Fanger's model [12] in which the PMV and PPD indices are used for assessing and predicting thermal comfort in indoor environments including buildings [11,[13][14][15][16][17]. The CBE Thermal Comfort tool [18] was used to calculate the PMV and PPD indices, in which the input parameters are indoor air temperatures (°C), relative humidity (%), mean radiant temperature (°C), air velocities (m/s), clothing insulation values (clo) and metabolic rate of the users (met).…”

Section: Methodsmentioning

confidence: 99%

Do Thermal Comfort Standards Ensure Occupant Satisfaction? Learning From Occupants’ Thermal Complaints

Kocaman¹,

Kuru²,

Çalış³

2019

Proceedings of the Creative Construction Conference 2019

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Today, buildings are operated according to the standards (i.e. thermal), however; the recommended values in the standards might not necessarily address occupants' needs, and, thus, occupant complaints might arise. This study aims at assessing the performance of the predicted mean vote (PMV) model to detect occupant thermal dissatisfaction. The case study was conducted in a commercial building located in Paris, France between January 2017 and May 2018. Indoor environmental conditions were monitored via sensors and an online tool was used to collect occupant thermal complaints. A total of 53 thermal complaints were analyzed and the corresponding measurements were checked against the reference values suggested by the ISO 7730 Thermal Comfort Standard. The results show that all of the operative temperature measurements both in the heating and cooling seasons were within the thresholds suggested by the standards. In addition, the PMV method suggested that only 4% of the occupants were dissatisfied with the indoor environment. However; the actual dissatisfaction ratio of occupants was 100% under these indoor environmental conditions. The findings of this study show that predefined comfort ranges, and, thus thermal comfort standards are not able to predict occupant thermal dissatisfaction.

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Section: Methodsmentioning

confidence: 99%

Do Thermal Comfort Standards Ensure Occupant Satisfaction? Learning From Occupants’ Thermal Complaints

Kocaman¹,

Kuru²,

Çalış³

2019

Proceedings of the Creative Construction Conference 2019

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“…In the case of existing buildings, the quality of the internal environment can be determined in the simulation program on the basis of measurements or calculations of the basic and derived physical parameters and then calculating the values of the appropriate indicators for comparison with the standard requirements [29]. The instrument used to measure the thermal microclimate in the analyzed hall building was an integrated digital meter BABUC A (Figure 3), meeting the requirements of PN-EN ISO 7726 [30].…”

Section: The Criterion For Ensuring Thermal Comfortmentioning

confidence: 99%

Efficiency of Solar Shading Devices to Improve Thermal Comfort in a Sports Hall

Dudzińska

2021

Energies

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Thermal environment in sports facilities is probably one of the most important parameters, determining the safety and performance of athletes. Such facilities, due to the required operating temperature and physical activity of users, are a serious challenge for both investors and administrators, especially in summer. The additional criterion of low energy consumption in extremely airtight and well-insulated passive buildings often results in overheating of the interior, creating considerable economic and operational problems. The significant need to reduce solar gain during periods of high outdoor temperatures for low-energy buildings prompts a variety of design solutions. Sun shading systems, as an indispensable element of glazed surfaces, are designed to control the amount of solar radiation reaching the building interior, at the same time creating a favorable microclimate inside. This article analyzes the effects of sun shading, which have actually been applied and modified on the southern façade of a passive sports hall in Słomniki. Measurements of the thermal conditions in the hall were the starting point, on the basis of which a model of the object was created in the DesignBuilder program. Using simulation analyses, thermal conditions arising with the use of different variants of internal and external shading devices were studied in the program. The results presented in the article show that in a well-insulated hall of large volume, appropriately selected external shading devices are only able to reduce the access of sunlight to the rooms. External brise-soleils are able to limit the access of solar radiation to the rooms by up to 30%, but this is not enough to guarantee internal thermal comfort. Internal blinds do not affect the interior microclimate significantly and do not protect protection from overheating. Momentary differences in PMV values for different patterns of closing the blinds do not exceed 0.2.

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“…In this section, the thermal comfort standards were assessed according to the ISO Standard 7730. This standard suggests the Fanger's model (Fanger 1982) in which the PMV and PPD indices are used for assessing and predicting thermal comfort in indoor environments including buildings (Katafygiotou and Serghides 2014;Soutullo et al 2014;Trebilcock et al 2014;Dudzińska and Kotowicz 2015;Gilani et al 2015;Natarajan et al 2015;Cheung et al 2019). The CBE Thermal Comfort tool (Hoyt et al 2017) was used to calculate the PMV and PPD indices, in which the input parameters were indoor air temperature (C), RH (%), mean radiant temperature (C), air velocity (m/s), clothing insulation value (clo), and metabolic rate of the users (met).…”

Section: Calculation Of Pmv Valuesmentioning

confidence: 99%

Analyzing and modeling thermal complaints in a commercial building in France

Kocaman

Kuru

Çalış

2021

Organization, Technology and Management in Construction: An International Journal

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Buildings are interactive environments in which their operations and occupants are linked. Although buildings are operated according to the standards, occupant complaints may arise when there is a mismatch between indoor environmental conditions and actual user needs. Therefore, the accuracy of thermal comfort prediction models suggested by the standards and alternative prediction models need to be investigated. This study aims at assessing the performance of the predicted mean vote (PMV) model suggested by the ISO 7730 Standard to detect occupant thermal dissatisfaction. In addition, a multivariate logistic regression model was developed to predict thermal complaints with respect to “too warm” and “too cold.” This case study was conducted in a commercial building located in Paris, France, between January 2017 and May 2018. Indoor environmental conditions were monitored via sensors and an online tool was used to collect occupant thermal complaints. A total of 53 thermal complaints were analyzed. The results showed that all the operative temperature measurements in both the heating and cooling seasons were within the thresholds suggested by the standards. The PMV method suggested that only 4% of the occupants were dissatisfied with the indoor environment whereas the actual dissatisfaction ratio was 100% under these indoor environmental conditions. In addition, the multivariate logistic regression model showed that operative temperature and season have a significant effect on thermal complaints. Furthermore, the accuracy of the developed model was 90.6%.

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Features of Materials versus Thermal Comfort in a Passive Building

Cited by 13 publications

References 3 publications

Do Thermal Comfort Standards Ensure Occupant Satisfaction? Learning From Occupants’ Thermal Complaints

Do Thermal Comfort Standards Ensure Occupant Satisfaction? Learning From Occupants’ Thermal Complaints

Efficiency of Solar Shading Devices to Improve Thermal Comfort in a Sports Hall

Analyzing and modeling thermal complaints in a commercial building in France

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