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Dispersion of participant's thermal sensation From Figure 5 can be seen that the average thermal sensation increases as the temperature increases. The data from Table 1 was used to perform an analysis of variance (ANOVA) to confirm statistically that there are differences, at least, between two the means. In fact, ANOVA is the statistic used for the following hypotheses test.
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Residential and commercial buildings represent a substantial load for electric energy systems. Being the HVAC comfort system of a building an important energy load, its optimization is fundamental for energy-efficient buildings. The literature, supported by theoretical models and simulations, has reported that ceiling fans can save energy when corr...
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Context 1
... 1 can be seen the thermal sensation for the participants for temperature ranging from 23.1°C to 32.7°C, followed by its mean, variance and standard deviation. The dispersion of the measurements is shown in Figure 5. Figure 5 can be seen that the average thermal sensation increases as the temperature increases. ...
Context 2
... 1 can be seen the thermal sensation for the participants for temperature ranging from 23.1°C to 32.7°C, followed by its mean, variance and standard deviation. The dispersion of the measurements is shown in Figure 5. Figure 5 can be seen that the average thermal sensation increases as the temperature increases. The data from Table 1 was used to perform an analysis of variance (ANOVA) to confirm statistically that there are differences, at least, between two the means. ...
Similar publications
For many years different human factors contributing to the IEQ have been studied separately. Concerning thermal perception, despite it is almost accepted that thermal comfort can be influenced by concomitant stimulation of non-tactile modalities, relatively few investigations have succeeded in delineating non-tactile stimulations as the visual ones...
For many years different human factors contributing to the IEQ have been studied separately. Concerning thermal perception, despite it is almost accepted that thermal comfort can be influenced by concomitant stimulation of non-tactile modalities, relatively few investigations have succeeded in delineating non-tactile stimulations as the visual ones...
Citations
... For this, the paper proposes a formulation of so-called satisfaction function for the user, mixing a satisfaction function linked to comfort and a satisfaction function liked to a perceived efficient use of energy. trated on the left part of Fig. 15, an experiment has been conducted to measure feelings and compromises between comfort and energy consumption [43]. For the analysis of the result, we use a methodology of experimentation and statistical analyses inspired from those performed in experimental economy [39] to characterize the behavior of the global system with the "human-in-the-loop" approach. ...
The big challenge for the 21th century is to decrease fossil energy use and to increase renewable energies in the framework of the climate constraint. The paper will show that smart buildings, connected to smart grids, can significantly contribute to this objective. Indeed, buildings are, on one side, the biggest consumers of energy in the electrical grid and could be among the greatest producers of renewable energy, especially thanks to the concept of energy positive buildings, and this by offering at the same time high flexibility in energy demand. That is why the paper focuses on methodologies using physical models and optimization for smart design and smart supervision for valorizing those buildings energy properties and contribute thus to the emergence of the concept of smart buildings (SBs) integrated in smart grids (SGs): we will give an overview of the mathematical optimization method used and of the kind of physical models we have developed over 10 years of active research in order to propose by this way a smart software dedicated to those SBs integrated in SGs. We explain also our global research strategy for improving this smart software, by a so-called “human-in-the-loop” approach, in which we consider that they there will be no “smart building” without “smart users”. This means a complex multi-disciplinary research that we develop in a “living lab”, in which the inhabitants are involved as “pro'sumers”, i.e. as active and implicated designers and users.
... The data analysis can be made according to the flowchart shown in the Fig. 3. This procedure will be applied to a real experiment conducted at G2Elab in Grenoble, described in [10], where the authors were interested in investigating whether the use of fans in a small office of the building can keep the thermal comfort level even when the room temperature increases. ...
... Bianchi et al [10], describes an experiment used to assess how the comfort feeling of a small group of people working in a small office is affected by the use of a fan. The target of such a research were to evaluate the potential of energy saving, making a combined use of HVAC systems and fans. ...
... On the first day of the experiment, there were no fans operating in the office. During the second day, a fan operated full time at the maximum speed [10]. The main objective of this experiment were to investigate whether the average thermal feeling has changed from one situation to another [10]. ...
Thermal comfort is a subjective concept, which describes a person's state of mind in terms of whether he/she feels hot or cold. The thermal comfort feeling is influenced by environmental and personal factors. Its most commonly used indicator is the air temperature, which, alone, is not a valid indicator of thermal stress. Thermal comfort should be measured by the number of people complaining of thermal discomfort. There are several procedures to assess the thermal comfort, but they require the measurement of many variables. This paper aims to propose a procedure to assess the thermal comfort. This proposal includes the creation of a ratio scale and a set of statistical procedures to treat the data gathered from this scale. This procedure was used to evaluate the influence of fans in the thermal comfort feeling of the occupants of a small office, and it proved to be useful. This procedure makes easier the inclusion of the human in the control loop of the comfort systems.
This book consists of papers presented in the “II Workshop on Bioenergy, RenewableEnergy and Green Building”, organized by the Institute of Bioenergy ResearchIPBEN/UNESP, Guaratinguetá, São Paulo, Brazil, and University of Wisconsin Platteville, U.S.A., on March 17th, 2016. It is a scientific event to promote development of science and technology and their applications and provide a valuable exchange of experiences between students and researchers on new technologies, theories and knowledge that can contribute to the improvement of development in Bioenergy, Renewable Energy and Green Building topics. The program of the workshop covers the presentation and discussion of technical papers prepared by researchers and students from various countries. It is the first project between University of Wisconsin with São Paulo State University, according to Partner Agreement signed in November 9th, 2015.
Finally, not only do I hope this Workshop be productive for everyone involved, but also look forward that you may exchange experiences, get in touch with new tendencies in your area and get to meet other professionals – aiming the technical and humanistic evolution, so important nowadays.
Welcome to scientific world.
Prof. Dr. José Luz Silveira
Executive Chairman
