This page has only limited features, please log in for full access.
The low accessibility to the information regarding buildings current performances causes deep difficulties in planning appropriate interventions. Internet of Things (IoT) sensors make available a high quantity of data on energy consumptions and indoor conditions of an existing building that can drive the choice of energy retrofit interventions. Moreover, the current developments in the topic of the digital twin are leading the diffusion of Building Information Modeling (BIM) methods and tools that can provide valid support to manage all data and information for the retrofit process. This paper shows the aim and the findings of research focused on testing the integrated use of BIM methodology and IoT systems. A common data platform for the visualization of building indoor conditions (e.g., temperature, luminance etc.) and of energy consumption parameters was carried out. This platform, tested on a case study located in Italy, is developed with the integration of low-cost IoT sensors and the Revit model. To obtain a dynamic and automated exchange of data between the sensors and the BIM model, the Revit software was integrated with the Dynamo visual programming platform and with a specific Application Programming Interface (API). It is an easy and straightforward tool that can provide building managers with real-time data and information about the energy consumption and the indoor conditions of buildings, but also allows for viewing of the historical sensor data table and creating graphical historical sensor data. Furthermore, the BIM model allows the management of other useful information about the building, such as dimensional data, functions, characteristics of the components of the building, maintenance status etc., which are essential for a much more conscious, effective and accurate management of the building and for defining the most suitable retrofit scenarios.
Giuseppe Desogus; Emanuela Quaquero; Giulia Rubiu; Gianluca Gatto; Cristian Perra. BIM and IoT Sensors Integration: A Framework for Consumption and Indoor Conditions Data Monitoring of Existing Buildings. Sustainability 2021, 13, 4496 .
AMA StyleGiuseppe Desogus, Emanuela Quaquero, Giulia Rubiu, Gianluca Gatto, Cristian Perra. BIM and IoT Sensors Integration: A Framework for Consumption and Indoor Conditions Data Monitoring of Existing Buildings. Sustainability. 2021; 13 (8):4496.
Chicago/Turabian StyleGiuseppe Desogus; Emanuela Quaquero; Giulia Rubiu; Gianluca Gatto; Cristian Perra. 2021. "BIM and IoT Sensors Integration: A Framework for Consumption and Indoor Conditions Data Monitoring of Existing Buildings." Sustainability 13, no. 8: 4496.
Roberto Ricciu; Alessandra Galatioto; Luigi A. Besalduch; Giuseppe Desogus; Lorenza Di Pilla. Building Wall Heat Capacity Measurement Through Flux Sensors. Journal of Sustainable Development of Energy, Water and Environment Systems 2019, 7, 44 -56.
AMA StyleRoberto Ricciu, Alessandra Galatioto, Luigi A. Besalduch, Giuseppe Desogus, Lorenza Di Pilla. Building Wall Heat Capacity Measurement Through Flux Sensors. Journal of Sustainable Development of Energy, Water and Environment Systems. 2019; 7 (1):44-56.
Chicago/Turabian StyleRoberto Ricciu; Alessandra Galatioto; Luigi A. Besalduch; Giuseppe Desogus; Lorenza Di Pilla. 2019. "Building Wall Heat Capacity Measurement Through Flux Sensors." Journal of Sustainable Development of Energy, Water and Environment Systems 7, no. 1: 44-56.
Today, evaluation of thermohygrometric indoor conditions is one of the most useful tools for building design and re-design and can be used to determine energy consumption in conditioned buildings. Since the beginning of the Predicted Mean Vote index (PMV), researchers have thoroughly investigated its issues in order to reach more accurate results; however, several shortcomings have yet to be solved. Among them is the uncertainty of environmental and subjective parameters linked to the standard PMV approach of ISO 7730 that classifies the thermal environment. To this end, this paper discusses the known thermal comfort models and the measurement approaches, paying particular attention to measurement uncertainties and their influence on PMV determination. Monte Carlo analysis has been applied on a data series in a “black-box” environment, and each involved parameter has been analysed in the PMV range from −0.9 to 0.9 under different Relative Humidity conditions. Furthermore, a sensitivity analysis has been performed in order to define the role of each variable. The results showed that an uncertainty propagation method could improve PMV model application, especially where it should be very accurate (−0.2 < PMV<0.2 range; winter season with Relative Humidity of 30%).
R. Ricciu; A. Galatioto; G. Desogus; L.A. Besalduch. Uncertainty in the evaluation of the Predicted Mean Vote index using Monte Carlo analysis. Journal of Environmental Management 2018, 223, 16 -22.
AMA StyleR. Ricciu, A. Galatioto, G. Desogus, L.A. Besalduch. Uncertainty in the evaluation of the Predicted Mean Vote index using Monte Carlo analysis. Journal of Environmental Management. 2018; 223 ():16-22.
Chicago/Turabian StyleR. Ricciu; A. Galatioto; G. Desogus; L.A. Besalduch. 2018. "Uncertainty in the evaluation of the Predicted Mean Vote index using Monte Carlo analysis." Journal of Environmental Management 223, no. : 16-22.
Nowadays one of the most pressing objectives toward a sustainable development is to construct bioclimatic passive buildings. Vernacular architecture is more and more recognized as a source of inspiration for facing this challenge. The main purpose of this paper is to identify how and how much vernacular architecture implements the most performing bioclimatic strategies in the Mediterranean climate. The work starts from the analysis of the island of Sardinia as a case study. The bioclimatic strategies are analyzed by applying the adaptive thermal comfort approach. Several Design Reference Years (DRYs) are defined by elaborating climate data from stations all over regional territory, and then they are inputted in Szokolay’s bioclimatic chart. The results of the analysis are then compared with the characteristics of the Sardinian vernacular built heritage, to verify if and how those strategies were applied. The findings reveal that, in Mediterranean mild, but variable, climate, vernacular architecture incorporates bioclimatic strategies in order to meet both underheating and overheating needs in different ways. In some cases there can be found a strong correlation between constructive and morphological features and climatic contexts.
Giuseppe Desogus; Leonardo Giuseppe Felice Cannas; Antonello Sanna. Bioclimatic lessons from Mediterranean vernacular architecture: The Sardinian case study. Energy and Buildings 2016, 129, 574 -588.
AMA StyleGiuseppe Desogus, Leonardo Giuseppe Felice Cannas, Antonello Sanna. Bioclimatic lessons from Mediterranean vernacular architecture: The Sardinian case study. Energy and Buildings. 2016; 129 ():574-588.
Chicago/Turabian StyleGiuseppe Desogus; Leonardo Giuseppe Felice Cannas; Antonello Sanna. 2016. "Bioclimatic lessons from Mediterranean vernacular architecture: The Sardinian case study." Energy and Buildings 129, no. : 574-588.
In Europe and worldwide a broad range of legislations are adopting comfort models that include the variability of occupants behaviour based on the variability of external climate conditions. The latest adaptive comfort methods consider outdoor temperature not only as a steady variable but also as the representation of occupants past thermal history. \ud The paper here presented deals with a summer environmental monitoring carried out in a Sardinian earth building. These traditional houses are very often without HVAC systems and the control of summer conditions is based mainly on natural ventilation. So they are very interesting case-study to test adaptive comfort assessment. Different models are investigated, some included in current technical standards, some other still experimental. \ud The results show firstly the capability of the case-study to provide comfort conditions. Moreover the differences among the different models adopted are highlighted and the consistence of different results that can occur is stressed
Giuseppe Desogus; Stefania Di Benedetto; R. Ricciu. The use of adaptive thermal comfort models to evaluate the summer performance of a Mediterranean earth building. Energy and Buildings 2015, 104, 350 -359.
AMA StyleGiuseppe Desogus, Stefania Di Benedetto, R. Ricciu. The use of adaptive thermal comfort models to evaluate the summer performance of a Mediterranean earth building. Energy and Buildings. 2015; 104 ():350-359.
Chicago/Turabian StyleGiuseppe Desogus; Stefania Di Benedetto; R. Ricciu. 2015. "The use of adaptive thermal comfort models to evaluate the summer performance of a Mediterranean earth building." Energy and Buildings 104, no. : 350-359.
The aim of the research is to investigate the role of the microclimatic conditions and their variations on the decay due to salt crystallisation, observed in a semi-confined archaeological site, in an urban area. A microclimatic monitoring was carried out in the site to detect temperature and relative humidity and their respective variations. Statistical methodology was conducted to examine the microclimatic data with seasonal, monthly and daily analyses. Different zones of the site were monitored and a microclimatic zoning was detected. The outside environment influences the most external zones of the site, while in the confined ones a high relative humidity was detected in all the seasons. The comparison between the hygrothermal conditions monitored in the site and those thermodynamic favourable to salt crystallization revealed a very harmful risk of salt damage for the archaeological structures
Gianfranco Carcangiu; Marta Casti; Giuseppe Desogus; Paola Meloni; Roberto Ricciu. Microclimatic monitoring of a semi-confined archaeological site affected by salt crystallisation. Journal of Cultural Heritage 2015, 16, 113 -118.
AMA StyleGianfranco Carcangiu, Marta Casti, Giuseppe Desogus, Paola Meloni, Roberto Ricciu. Microclimatic monitoring of a semi-confined archaeological site affected by salt crystallisation. Journal of Cultural Heritage. 2015; 16 (1):113-118.
Chicago/Turabian StyleGianfranco Carcangiu; Marta Casti; Giuseppe Desogus; Paola Meloni; Roberto Ricciu. 2015. "Microclimatic monitoring of a semi-confined archaeological site affected by salt crystallisation." Journal of Cultural Heritage 16, no. 1: 113-118.
Giuseppe Desogus; Stefania Di Benedetto; Walter Grassi; Daniele Testi. Environmental monitoring of a Sardinian earthen dwelling during the summer season. Journal of Physics: Conference Series 2014, 547, 012009 .
AMA StyleGiuseppe Desogus, Stefania Di Benedetto, Walter Grassi, Daniele Testi. Environmental monitoring of a Sardinian earthen dwelling during the summer season. Journal of Physics: Conference Series. 2014; 547 ():012009.
Chicago/Turabian StyleGiuseppe Desogus; Stefania Di Benedetto; Walter Grassi; Daniele Testi. 2014. "Environmental monitoring of a Sardinian earthen dwelling during the summer season." Journal of Physics: Conference Series 547, no. : 012009.
The age of European existing building stock and the very low growth rate make energy \ud retrofit a critical issue at the moment. The spreading of good practices is strongly hampered by their \ud cost effectiveness. \ud National legislation thermal requirements for retrofitting works play a fundamental role. If they are \ud too strict, the initial economic investment could be too high if compared with energy savings \ud achievable. \ud The paper refers to a case study of improving fabric thermal performance of stone masonry buildings \ud located in Cagliari - Italy. They were built in 1950's. \ud The economic feasibility of different energy efficiency retrofits is evaluated. Two different scenarios \ud are analyzed: the former according to the earlier Italian legislation (valid from 2006 to 2008), the latter \ud according to the latest and strictest measures (valid from 2010). \ud The results show that heavy thermal performance upgrades, even though compulsory, are not \ud completely cost-effective in a mild Mediterranean climate area as far as payback time is concerned. \ud National subsidy policies can improve the economic return on the investment. The impact of present \ud Italian incentives has also been evaluated
Giuseppe Desogus; Lorenza Di Pilla; Salvatore Mura; Gian Luca Pisano; Roberto Ricciu. Economic efficiency of social housing thermal upgrade in Mediterranean climate. Energy and Buildings 2013, 57, 354 -360.
AMA StyleGiuseppe Desogus, Lorenza Di Pilla, Salvatore Mura, Gian Luca Pisano, Roberto Ricciu. Economic efficiency of social housing thermal upgrade in Mediterranean climate. Energy and Buildings. 2013; 57 ():354-360.
Chicago/Turabian StyleGiuseppe Desogus; Lorenza Di Pilla; Salvatore Mura; Gian Luca Pisano; Roberto Ricciu. 2013. "Economic efficiency of social housing thermal upgrade in Mediterranean climate." Energy and Buildings 57, no. : 354-360.
This paper introduces a comparison of different measuring methods of buildings fabric thermal resistance, including the test wall measuring points arrangements and measurement results, conducted in a test chamber in Cagliari (Italy) in summer 2009. Two methods and their measurement uncertainties are presented and compared by the compatibility of measurement study. The non-destructive method involves the heat-flow rate measurement through the test wall and its surface temperatures. The reliability of this method depends on the temperatures difference between the two environments separated by the building envelope. Thus two measurement series with different temperatures were carried out on the test wall. The destructive method instead foresees the acquisition of a sample by the use of a hollow drill, the building envelope layers thickness measurement and the thermal properties assignment to each different material. The wall R-value is the sum of each layer thermal resistance. The comparison shows that the R-values measured by the non-destructive method with a temperature difference of 10 °C and 7 °C and the one calculated from the destructive method obey the compatibility of measurement principle.
Giuseppe Desogus; Salvatore Mura; Roberto Ricciu. Comparing different approaches to in situ measurement of building components thermal resistance. Energy and Buildings 2011, 43, 2613 -2620.
AMA StyleGiuseppe Desogus, Salvatore Mura, Roberto Ricciu. Comparing different approaches to in situ measurement of building components thermal resistance. Energy and Buildings. 2011; 43 (10):2613-2620.
Chicago/Turabian StyleGiuseppe Desogus; Salvatore Mura; Roberto Ricciu. 2011. "Comparing different approaches to in situ measurement of building components thermal resistance." Energy and Buildings 43, no. 10: 2613-2620.