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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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F Qin, F Fan, Z Li, H Qian, X Jin

Thermal Simulation of Hydration Heat in Slab of Taishan Nuclear Power Plant Unit 2

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Series: w78:2014 (browse)
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Fadhil Che Wan Putra C W, Alshawi M

Building space analysis for integrating design and construction

Abstract: "Space analysis for a building is very important analysis whereby it can provide details of the space, i.e. room which has been analysed, including the space boundaries, space separator (including wall, ceiling or floor), total area and volume. Such information are very important whereby these parameters can be used for other applications such as calculating the heat-loss, designing a lighting system, ventilation system, air-conditioning system, etc. However, such analysis, although has been provided by several commercial packages (with some constraints), it still not yet being fully utilised by integrating with other downstream applications such as estimating, planning and site layout planning for further analysis. Therefore, a standardised building space data model need to be developed in order such integration can be achieved. Considering the importance of developing such data model for building space, several proposed generic models have been developed including RATAS Model, GSD Model, De Waard’s “House Model” and the COMBINE Integrated Data Model. However, most of the models did not fully been implemented for integrating design and construction. Such models have purposely been developed for solving a particular domain only. For example, COMBINE Integrated Data Model for HVAC application, positioning building components in architectural design in GSD Model and reasoning about building regulations in the De Waards House Model. A study have been done at the University of Salford, UK for integrating design and construction. Building space analysis has also been accommodated in this study whereby the building space has been analysed. All the parameters required for further analysis such as space boundaries, space separator and space functionality have been captured during design application and later will be integrated with other applications such as estimating, construction and site layout planning. The objectives of this paper are two-folds:- 1. to present the Building Space data model. 2. to show how the implementation of this building space model has been developed and how this implemented model has been integrated with other data models within an integrated construction environment. The paper will outlined the study on developing the building space data model and how such concepts have been implemented and developed in an integrated construction environment."

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Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.legal (0.017951) class.environment (0.015061) class.analysis (0.011629)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Gabrielaitiene G, Kacianauskas R, Sunden B

Application of the finite element method for modelling of districtheating network

Abstract: This paper presents simultaneous modelling of the fluid flow and heat transfer in a district heatingnetwork. The finite element method is applied here. A major advantage of the finite element methodis the efficiency of verified numerical procedures and standardized information describing the fluid,which may be transferred and communicated with other computer aided design or monitoringsystems.The thermal-hydraulic pipe element of the ANSYS code is modified for these purposes bymodelling the real structure of the pipeline, the heat conductivity and convection. The finite elementmodel is compared to the traditional H.Cross method. A fragment of the district heating system ofthe city Vilnius, Lithuania is used as an illustrative example.

Keywords: flow and heat transfer, finite element method, district heating network.

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Series: ecce:2001 (browse)
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Georgios Gourlis, Peter Smolek, Bernhard Heinzl, Ines Leobner and Iva Kovacic

From BIM Models to Integrated Energy Efficiency Applications for Industrial Facilities

Abstract: Raised interest in efficient use of available resources in industrial facilities prompts for software-tools to predict and manage energy demand of the whole system. An integrated approach considering all energy consumption contributors, classified into building, energy system, production and logistics, is developed within the research project Balanced Manufacturing (BaMa). Thereby BIM models of industrial spaces containing valuable information are used for creating a comprehensive representation of building-related aspects in a hybrid simulation environment, able to assess manufacturing and auxiliary energy demands.For testing the applicability of this integrated hybrid approach, a prototype is developed based on an actual use case. The simplification procedure is presented and the energy performance results are compared with that of an established building energy modelling software, discussing advantages and limitations. Essential information that needs to be transferred from the BIM model is clarified and prioritised.

Keywords: Energy Efficient Production, Building Energy Modelling, Waste Heat Emissions, Hybrid Simulation

DOI: https://doi.org/10.24928/JC3-2017/0181

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Series: jc3:2017 (browse)
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Jahnkassim P-S,Abakr Y,Ibrahim I-F

Integrating simulation and visualisation for energy efficiency in a large public mall in the tropics

Abstract: This paper reports on a case study that involved an integrated design process of a large commercial development. In particular, it utilized simulation and visualization to inform strategic design decisions that could reduce heat gain while admitting usable daylight. Additionally, the design intended to avoid extensive air conditioning energy of a large shopping mall in the tropical context of Malaysia. Simulation inputs were presented to a design team throughout the design process and on completion of the building, post occupancy studies were carried out to verify the results. At present, air conditioning is not used in large common public areas and hence, this case study represents a successful application of simulation and visualization tools of such context. The airflow and monitored temperature results verified the simulation output - however, the daylight measurement recorded higher distribution compared to the predicted performance. This may be due to the standard use of 10 k Cie overcast sky in simulation to represent the worst cloudy scenario in Malaysia. Regardless, the results will benefit future planners and developers of large shopping malls by recommending the integrated design process. This process introduces the usage of strategic passive design approach that can save a large amount of energy used in common areas.

Keywords: multivolume,atria,canopy,thermal comfort,bioclimatic,ventilation

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Series: convr:2013 (browse)
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Joao P. Carneiro and Burcin Becerik-Gerber

Impact of Immersive and Interactive Information Visualization on OccupantÕs Lighting Choices

Abstract: Feedback systems often use Information Visualization (InfoVis) to inform occupants about the impact of their choices on energy consumption, aiming at reducing occupant behaviour related waste in buildings. In this pilot study, we use InfoVis as a tool to influence occupantsÕ opinions about a roomÕs lighting quality instead of their energy consumption. Lighting significantly affects occupantsÕ mood, productivity, and wellbeing. We utilize InfoVis to present the light quality data throughout a day via an animated daylight cycle, as well as light levels and light distributions through static and animated heat maps to enable occupants to make more informed decisions related to lighting. InfoVis is presented within the spatial context by overlaying visualizations on the room itself, on its floor and the desk surface, using an immersive virtual environment. The results show that the participants changed their choices once provided with more information related to the quality and amount of lighting in the room. Specifically, the participants changed their choices significantly more when the illuminance levels and distribution over time (dynamic heat maps) were presented. The findings of this research can inform the development of better visualization techniques that could increase occupant awareness about environmental conditions in buildings.

Keywords: Immersive Virtual Environment, Immersive Interactive Visualization, Informed Decision, Lighting Data

DOI: https://doi.org/10.24928/JC3-2017/0210

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Series: jc3:2017 (browse)
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Lebru, A.

Simplified Procedure for Determining Seasonal Basement Heat Loss

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Series: w78:1986 (browse)
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M Laasonen, M Heinisuo, J Outinen, E Lehtimäki, D Pada

Planning environments of structures in fire

Abstract: The design of structures in fire has usually been based on ISO standard fires. For higher quality design the real situation should be analysed more carefully. This would improve the safety level of the structures and in many cases help avoid redundant fire protections. The method discussed in this paper is the natural fire design documented by [DIFISEK, 2005] where the gas temperatures are based on simulations of realistic natural fires. Fire simulations in this study are done using the FDS program by NIST. The method follows the European standard [EN, 2005] but the design process is still complex. The same building parts should perform smoothly in four different tasks: product modeling, fire simulation, heat transfer from gas to structures, and structural analysis. The utilization of building information models as initial data of fire simulation has been described e.g. in [Dimyadi et al., 2007] and in [Heinisuo et al., 2009]. This paper discusses how different kinds of structural analysis programs can be integrated to the design process and what requirements those programs set for data transfer. The final goal of the research is practical structural design for entire buildings in fire. In this phase, especially fire simulations need computation time but, for example, accurate and continuum finite element models will not be used for the entire building because of the laborious generation and analysis of the model. The most suitable solutions found so far include structural analysis programs where the members can be modeled as one-dimensional elements, beam elements. The heat transfer from gas to members is solved in the analysis program by applying Eurocode rules. At present, no standard data transfer form used in building projects includes all the entity data needed in these tasks. Very different data are needed in the analysis than, for example, in using continuum models for members.

Keywords: BIM, natural fire design, steel structures

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Series: w78:2011 (browse)
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Olga Golovina and Jochen Teizer

BIM4LIFE: GNSS and BIM Data Fusion for Mapping Human-Machine Interaction

Abstract: This paper presents an effective approach towards integrating Real-time Location Sensing (RTLS) and Building Information Modeling (BIM) data for mapping near hit events related to human-machine interaction on construction sites. The study Š under the concept called BIM for lean and injury free environments (BIM4LIFE) Š focuses on key managerial and technological issues in planning safe and productive work environments: (a) the reliance of current performance measurement practices on lagging instead of adapting to leading indicator data and (b) the common unstructured nature and dynamic progress of construction work environments making it difficult to collect data that leads to quality information. Both call for reliable information and communication technology (ICT) in infrastructure and information management processes to advance safety in construction. The data employed are trajectories from Global Navigation Satellite System (GNSS) data loggers, while an as-is building information model and a-priori collected true geometric equipment information are the other main data sources. The initial result of the data fusion process is a heat map that precisely analyses pedestrian worker and equipment interactions. The novelty of this work lies in solving the interface issues from RTLS data to BIM and to automated protective safety equipment modelling. The methods were tested in realistic work settings. The paper concludes with a critical review on the reliability of the methods employed as well as an outlook on possible changes to current work practices.

Keywords: BIM4LIFE, Construction Safety, Remote Sensing, Equipment Operator Visibility, Human-Machine Interaction, Building Information Modelling (BIM)

DOI: https://doi.org/10.24928/JC3-2017/0185

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