A statistical approach for the evaluation of thermal and visual comfort in free-running buildings

Sicurella, F.; Evola, Gianpiero; Wurtz, Étienne

doi:10.1016/j.enbuild.2011.12.013

Cited by 67 publications

(37 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence, this approach provides in output a set of three values for each point of the grid: this can be an obstacle in order to obtain a global and concise evaluation of the space. For example, Frequency of Visual Comfort (FVC), a metric that has analogies with UDI, gives just one value as output: illuminance is averaged on the zone of interest since the aim is the definition of a simplified approach to integrate visual and thermal comfort [72]. It has to be noticed that the criterion of the averaging procedure is not explicit; however, this approach seems interesting and would deserve to be further investigated in future works.…”

Section: Discussionmentioning

confidence: 99%

“…Intensity of Visual Discomfort (IVD) is defined in [72] and consists of two indices, IVD Over and IVD Under that result, respectively, from the time integral of the difference between the spatial average of current daylight illuminance and the upper limit of visual comfort (E Over is set at 750 lx) or the lower limit of visual comfort (E Under is set at 150 lx). The calculation is performed according to…”

Section: Intensity Of Visual Discomfortmentioning

confidence: 99%

See 1 more Smart Citation

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Carlucci

Causone

Rosa

et al. 2015

Renewable and Sustainable Energy Reviews

334

156

View full text Add to dashboard Cite

In the last decades, several studies aimed at assessing some specified aspects of visual comfort characterizing the relationship between the human needs and the light environment, such as an available amount of light, light uniformity, light quality in rendering colors, and predicting the risk of glare for space occupants. For each of them, a (still growing) number of indices and metrics have been proposed in literature and standards. In the present work, they are described, categorized according to common features, and finally discussed. As in the case of long-term thermal comfort indices, such visual comfort indices and their summation over a specified calculation period might be used for driving optimization processes to support a more conscious integrated design of buildings. To that purpose, the choice among the available visual comfort indices needs to be informed by an analysis of their features and implications. We present recommendations for use, and suggest areas where improvement is needed for their use in optimization processes to support buildings' design.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Intensity Of Visual Discomfortmentioning

confidence: 99%

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Carlucci

Causone

Rosa

et al. 2015

Renewable and Sustainable Energy Reviews

334

156

View full text Add to dashboard Cite

show abstract

“…The minimum difference pertains to the less performing paint ( = 0.45) and ranges around 5-10 ∘ C, but in the case of the best performing paint such temperature difference actually increases up to [20][21][22][23][24][25][26][27][28][29][30] ∘ C. Furthermore, as shown in Figure 6 for the hottest days of the year, the use of a cool paint on the roof leads to a sensible reduction of the peak outer surface temperature while at night this difference is more limited. In fact, when the solar irradiance is at its maximum (12:00-14:00) and a peak of about 60 ∘ C is reached for the untreated roof, a paint with = 0.45 shows a reduction of 10 ∘ C and the one with = 0.85 has a reduction of 25 ∘ C.…”

Section: Roof Temperaturementioning

confidence: 99%

“…To this aim we will adopt an indicator called Intensity of Thermal Discomfort for overheating (ITD over ), introduced by Sicurella et al [21], which is defined as the time integral, over the occupancy period (from 9:00 to 18:00 for weekdays in this case), of the positive differences between the current operative temperature and the upper threshold for comfort:…”

Section: Thermal Comfort Analysismentioning

confidence: 99%

Study on the Application of Cool Paintings for the Passive Cooling of Existing Buildings in Mediterranean Climates

Costanzo

Evola

Gagliano

et al. 2013

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Building roofs play a very important role in the energy balance of buildings, especially in summer, when they are hit by a rather high solar irradiance. Depending on the type of finishing layer, roofs can absorb a great amount of heat and reach quite high temperatures on their outermost surface, which determines significant room overheating. However, the use of highly reflectivecool materials can help to maintain low outer surface temperatures; this practice may improve indoor thermal comfort and reduce the cooling energy need during the hot season. This technology is currently well known and widely used in the USA, while receiving increasing attention in Europe. In order to investigate the effectiveness of cool roofs as a passive strategy for passive cooling in moderately hot climates, this paper presents the numerical results of a case study based on the dynamic thermal analysis of an existing office building in Catania (southern Italy, Mediterranean area). The results show how the application of a cool paint on the roof can enhance the thermal comfort of the occupants by reducing the operative temperatures of the rooms and to reduce the overall energy needs of the building for space heating and cooling.

show abstract

“…Two targeted actions were evaluated: one action on the building envelope and the other on the energy production systems. The first typology of interventions are based on the use of constructive technologies, and of building materials with high insulation properties with the objective to decrease both of the energy demand for heating and cooling [6]. The second typology is based on the use of energy production systems with high efficiency as heat pumps and condensing boilers and others renewable energy sources.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Constructive Technologies for improving Energy Performance of Buildings

Gagliano¹,

Nocera²,

Patania³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

Abstract. The current increase in the price of fossil fuel and, consequently, of energy, and the decrease in the availability of these resources, led to the enactment of laws, among which the European Directive 31/2010 on Net Zero Energy Buildings (NZEB), with more strict limits on energy needs. So it is grown the interest in constructive solutions and equipments to reduce heat losses and the energy demand for heating, as well as the study to reduce energy needs for cooling and lighting in order to obtain a zero or nearly energy building. This study aims to identify solutions for zero energy building design and investigates some construction technologies and equipments in order to optimize the energy performance and to reduce the environmental impact of residential buildings. A simulation tool was used for the investigation of the feasibility of NZEB applied to a case study.

show abstract

A statistical approach for the evaluation of thermal and visual comfort in free-running buildings

Cited by 67 publications

References 8 publications

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design

Study on the Application of Cool Paintings for the Passive Cooling of Existing Buildings in Mediterranean Climates

Analysis of Constructive Technologies for improving Energy Performance of Buildings

Contact Info

Product

Resources

About