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E Sabbatini, G M Revela, A Sicilia, M Böhms

Integration of an Infrared-based monitoring system with an EIIP (Energy Information Integration Platform) for innovative efficient indoor environment control

Abstract: An innovative thermography based measurement system for real-time estimation of thermal behaviour of a room is already developed as part of the FP7 project IntUBE. The applied approach is based on indoor measurements by an infrared (IR) camera and image post-processing to derive mean surface temperatures, thermal comfort indices, air temperature, number of occupants with the relative heat gains generated and presence of other heat sources (e.g. computers). The purpose is to provide spatially distributed room energy information in order to obtain instantaneous feedback displayed for the users or eventually for automatic HVAC control. Lumped parameter model of the room receives data from IR camera to compute exchanged heat rate and air temperature. A low-cost IR sensor, commercially available as surveillance system with automatic movement control that can provide qualitative data output, has been upgraded with a new interface to achieve quantitative data. The paper describes the integration of energy information related to the developed monitoring device (e.g. PMV - Predictive Mean Vote, PPD - Predicted Percentage Dissatisfied, room air temperature as output, humidity value from external sensor as input) within the IntUBE Energy Information Integration Platform (EIIP). The key aspect of the platform is smartness or “semantics”: ICT applications will communicate via this integration platform on the basis of semantic building objects. Performance Information Model (PIM) server stores data regarding the actual monitored performances of a building (energy, temperature, humidity, PMV etc.). These operational data together with the actual weather data can be used e.g. to compare actual performances with simulated performances and can lead to corrective actions. The paper demonstrates that an advanced monitoring/control system (as the IR-based one) can benefit from retrieving data from the EIIP through SPARQL queries, thus activating new functionalities with interoperability guaranteed by the Platform semantics.

Keywords: Thermography, Thermal comfort, Integration Platform, Interoperability, Semantics

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Series: w78:2011 (browse)
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Ipek Gursel, Rudi Stouffs, Sevil Sariyildiz

A computational framework for integration of performance information during the building lifecycle

Abstract: Optimal indoor environments in terms of thermal comfort and indoor air quality are essential to maintain healthy and productive spaces. To address the high occupant comfort and energy efficiency requirements, advanced HVAC systems that have narrow performance boundaries are used. It is crucial to achieve the satisfactory operational level for systems and buildings by the adoption of performance based verification strategies. Performance-based approach requires the continuous verification of the actual performance against objectives during the building lifecycle. Building commissioning, building energy management systems (BEMS) and operations and main-tenance are effective tools to verify optimum building performance and have the potential to embed performance as-sessment into the building lifecycle. However, transfer of performance information from one method or building phase to another is difficult. A considerable amount of valuable information is lost due to the lack of an integrated framework that bridges different islands of information. This becomes most problematic during the operational phase, where de-sign data and performance trends are the main basis for decision making for facilities management staff. To achieve a persistent performance evaluation across phases and stakeholders, a flexible and seamless communication infrastruc-ture across disciplines and processes is necessary. The software architecture for a continuous performance verification and communication environment for indoor cli-mate and ventilation systems is introduced. The purpose of the model is to provide a framework that integrates commis-sioning, BEMS monitoring and inspection/maintenance activities, to avoid erosion of domain information during hand-overs and over time. The model retains continual information of building and makes this information available during building operations and [re]commissioning. A formal relationship structure is proposed between performance indices to support traceability of design and operations decisions. The paper will be concluded with reflections into the future work, which includes implementation and proposed strategies for validation of the model by test cases.

Keywords: building lifecycle performance assessment, building commissioning, BEMS

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Series: w78:2007 (browse)
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J I Lather, G A Macht, R M Leicht, J I Messner

Development of Indices for User Perceptions of Interactive Technologies in Construction Engineering

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Series: w78:2016 (browse)
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Kazakeviciute G,

The computer aided modelling and energy analysis of the spatial andstructural components of building

Abstract: The article concerns the modelling and energy analysis problem of the spatial and structuralsolutions of newly designed buildings or those under renovation. The results of that task serve as abase for defining of thermal indices of the project on different design stages.The core of the developed automated system is formed of integrated graphical digital spatial modelsof the parts of buildings. These models include different kind of structured geometric and nongeometric(physical, economical) information about the object.The proposed method could be used by interested experts as a tool for control of thermal and energyindices at various design stages, searching for rational architectural forms and structural solutions. Ittakes into account the latest requirements of Lithuanian building regulations concerning heatingenergy saving.

Keywords: Computer aided design, buildings, 3D models, energy analysis.

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Series: ecce:2001 (browse)
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Oluwole Alfred Olatunji

Modelling the Cost of Corporate Implementation of Building Information Modelling

Abstract: The popularity of BIM has improved in the past years. However, its adoption and implementation rates are still slow. Apart from latent limitations regarding yet undefined market drivers; many potential BIM users are still speculative because of a number of concerns. Arguably, there is need for defining comprehensive frameworks for initiating and servicing BIM adoption and sustainable implementation, both in term of cost and non-cost indices. A process model for BIM implementation is discussed using different organization structures. This is indexed on skilling, hardware, software, on-costs, indirect costs and marketing costs. Conclusions are drawn on the benefits and limitations of implementing this model.

Keywords: BIM adoption, BIM implementation, organization structure

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Full text: content.pdf (273,336 bytes) (available to registered users only)

Series: w78:2010 (browse)
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