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EXPERIMENTAL ANALYSIS OF DIFFERENT INSULATED FACADE TECHNOLOGIES IN SUMMER CONDITION

Journal of Green Building 2019年第4期14卷 77-91页

作者： graziano salvalai Marta Maria Sesana Department of Architecture Built Environment and Construction Engineering Politecnico di MilanoPiazza Leonardo da Vinci32 Milano20133Italy

At the present,the ventilated façade is one of the most widely used and most innovative systems characterized by different energy saving features,but due to its complexity,the real performances are difficult to predict by numerical *** work shows the results of the monitoring campaign conducted on two Cross Laminated Timber(CLT)test boxes equipped with different thermal coat technologies to realize the performances *** particular,the investigation focus on the evaluation of surface temperatures of the different wall layers and the indoor air temperature for:i)a micro ventilated facade and ii)two different ETICS *** monitoring campaign has been conducted during the summer season on walls with equivalent thermal transmittance(U-value)and different thermal *** detail,the experimental work has been performed to estimate the Isotec■wall micro ventilated facade performance in comparison with two traditional ETICS technology:the first one realized with EPS and the second one with high density rock wool *** results show that due to the shading effect provided by the external layer,the temperature within the cavity of the ventilate facade is reduced by 8-10℃,reducing the cooling loads through the wall by 30-40% with respect to ETICS with *** shading and the ventilation effects balance the presence of thermal insulation with less heat capacity;consequently,it validates the good quality of Isotec■as wall technology with performances comparable to ETICS solution with high density rock wool insulation.

关键词： in situ monitoring campaign micro ventilate facade ETICS performance assessment insulation comparison

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Advancing and demonstrating the Impact Indices method to screen the sensitivity of building energy use to occupant behaviour

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Building Simulation 2023年第7期16卷 1257-1272页

作者： Juan Mahecha Zambrano Isabella Gaetani Ulrich Filippi Oberegger graziano salvalai Zurich University of Applied Sciences Centre for Building Technologies and Processes8400 WinterthurSwitzerland Politecnico di Milano Department of ArchitectureBuilt Environment and Construction Engineering20133 MilanItaly Arup Smart BuildingsLondonW1T 4BQUK European Academy of Bolzano/Bozen Institute for Renewable Energy39100 Bolzano/BozenItaly

A critical gap between the occupant behaviour research field and the building engineering practice limits the integration of occupant-centric strategies into simulation-aided building design and *** this gap would contribute to the implementation of strategies that improve the occupants’well-being while reducing the buildings’environmental *** this view,it is urgent to develop guidelines,standardised methods,and supporting tools that facilitate the integration of advanced occupant behaviour models into the simulation *** important step that needs to be fully integrated into the simulation workflow is the identification of influential and non-influential occupant behaviour aspects for a given simulation ***,this article advances and demonstrates the application of the Impact Indices method,a fast and efficient method for screening the potential impact of occupant behaviour on the heating and cooling ***,the method now allows the calculation of Impact Indices quantifying the sensitivity of building energy use to occupancy,lighting use,plug-load appliances use,and blind operation at any spatial and temporal ***,users can apply it in more detailed heating and cooling scenarios without losing ***,they can identify which components in building design and operation require more sophisticated occupant behaviour *** office building is used as a real case study to illustrate the application of the method and asses its performance against a one-factor-at-a-time sensitivity *** Impact Indices method indicates that occupancy,lighting use and plug-load appliances have the greatest impact on the annual cooling demand of the studied office building;blind operation is influential only in the west and south façades of the ***,potential applications of the method in building design and operation practice are discussed.

关键词： occupant behaviour building simulation occupant-centric building design building performance

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