2,430 Works

Modelling sorption of 3 heavy metals by porous pavements

S. Fach & W. F. Geiger
Due to the implementation of sustainable water management (systems) in Germany more and more infiltration facilities have been built in the last few years. As the infiltration of rainwater reduces the hydraulic stress and pollution of rivers and lakes by combined sewer overflows when heavy rainfall occurs, the infiltration of rainwater has been excluded from compulsory sewage disposal by law in several Federal States. Particularly in the Emscher catchment area \342\200\223 a densely populated area...

Mapping the Relationship Between the CDIO Syllabus and the CEAB Graduate Outcomes: An Update

Guy Cloutier, Ron Hugo & Rick Sellens
CDIO Standard 2 stipulates learning outcomes based on a syllabus that has been validated by program stakeholders and most CDIO programs are using the CDIO Syllabus (version 1) as the basis for developing their own outcomes. Version 2 of the Syllabus is newly available and this paper will update the mapping between CDIO and Canadian Engineering Accreditation Board (CEAB) originally presented at the International CDIO Conference 2010. It is anticipated that this update will be...

A Stirling engine powered by the concentrated solar energy reflected by a parabolic reflector

Azur Hodzic, Jesper Andreasen, Martin Holm, Morten Renneberg, Paw Møller & Knud Erik Meyer
The Stirling engine is a heat engine driven by an external heat source in contrast to a normal internal combustion engine. Because of the external independent heat source the Stirling Engine is very versatile in its fuel selection. In modern industry Stirling Engines runs on bio-fuels or waste heat from electricity production. In our project we will use green sustainable energy, by focusing sun rays directly at a Stirling Engine with a parabolic reflector, to...

Drivers for leaders to achieve sustainable benefits from ergonomics interventions

David Caple
Leaders of industry assess the outcomes of risk assessments from a holistic perspective. Compliance with legislation is only one driver and the sustainable interventions are those that bring productivity and quality benefits. A review of 10 Case studies where supply chains have successfully implemented sustainable risk reduction interventions found that reduction of OHS risk was a minor driver for success. The primary drivers related to the impact on process productivity and quality of the system....

Combining building thermal simulation methods and LCA methods

Frank Pedersen, Klaus Hansen, Kim Wittchen, Karl Grau, Kjeld Johnsen & Frank Pedersen
This paper describes recent efforts made by the Danish Building Research Institute regarding the integration of a Life Cycle Assessment (LCA) method into a whole building hygro-thermal simulation tool. The motivation for the work is that the increased requirements to the energy performance of buildings (as expressed in EU Directive 2002/91/EC), may in the future be supplemented by requirements to the environmental impact of buildings. This can be seen by the fact that EU recently...

How to sell a room without a view?

Sjoerd REINSTRA & Niels DE GROOT
The locks and bridges of a large seaport are locally operated. A consortium of Human Factors engineers, installers and simulator engineers investigated the possibility of operating the locks and bridges from a remote control room, supported by CCTV. The end users (lock operators and bridge operators), participated in the design process but they had serious objections and considered the project as an unrealistic option. The main question in this case study is: how can HF...

Analysis of one year weather radar data for use in a rainfall runoff model

M. Jessen, T. Einfalt & C. Golz
One year of continuous rainfall measurements from weather radar and raingauges have been analysed and prepared for use in a hydrological rainfall runoff model. A major effort of data quality control (quality check and data correction) was required to produce reliable data. The employed corrections included data modifications because of the occurrence of ground clutter, beam blockage and bright band. The corrected and adjusted data compared well on raingauge stations not used for the adjustment...

Unfired clay – the green construction material

Emilie Kristiansen, Thea Gregersen & Kurt Kielsgaard Hansen
Unfired clay can be used as a green construction material alternative to ordinary concrete. The clay is mixed with sand, water and either crushed tiles or gravel. The method to process the clay in a wall construction is called pisé where the clay is stamped in layers inside the formwork. The clay has positive qualities regarding moisture and heat buffering of the inside air.

The role of paper and books in stabilization of indoor climates

Hannelore Derluyn, Thijs Defraeye, Dominique Derome, Jan Diepens, Jan Carmeliet & Hannelore Derluyn
To realize a stable hygric indoor climate, hygroscopic moisture buffering by materials plays an important role. Not only finishing materials on indoor surfaces, but also textiles (curtains, pillows) and paper (books) show an important moisture buffering capacity. In this paper, the role of books in the stabilization of indoor climates is studied. Recently, a model for hygroscopic buffering by books has been presented (Derluyn et al. 2007) introducing an effective vapour permeability and moisture capacity....

Peer Rating for Feedback in Group Projects

Paul Hermon & Charlie McCartan
Analysis of best practice and introduction of improved procedures for proving feedback to students carrying out group projects. The procedures include a significant amount of peer rating and individual interviews which aim to separate the development of personal and professional skills from the assesment of project deliverables.

Stormwater treatment trains in subtropical Australia - wetland and pond systems: How effective are they in improving water quality and enhancing ecosystem biodiversity?

M. Greenway
Sediment basins, wetlands and ponds are commonly used in subtropical Australia for stormwater storage and water-quality improvement. A crucial question is: \342\200\234How effective are these stormwater treatment devices?\342\200\235. Wetlands and ponds, being \342\200\234natural systems\342\200\235, also have the potential to enhance aquatic biodiversity. Our research efforts have focussed on monitoring water quality and macroinvertebrates in a wetland system consisting of a sediment basin and two wetlands, and a pond system consisting of a sediment basin (Pond...

Parameter Sensitivity in the Predication of DNAPL Infiltration and Redistribution in Heterogeneous Porous Media

Tissa Illangasekare, Mini Mathew, Fritjof Fagerlund, Auli Niemi & Tissa Illangasekare
Subsurface heterogeneity has a significant influence on infiltration and distribution of DNAPLs. Numerical models of multiphase flow are limited by their ability to predict behavior of DNAPLs in the field due to lack of accurate data on characterization of heterogeneity. However, these models help to obtain insights into the complex behavior that will be useful in designing effective remediation schemes. A number of multiphase flow codes that have the ability to capture the fundamental processes...

Experimental study of detention/infiltration trenches

A. Proton & B. Chocat
BMPs aim to reduce the flow of water and pollutants discharged by cities during rainy periods. Detention and/or infiltration trenches are one of the techniques that can be used. Lack of knowledge as to the hydraulic functioning of such facilities still hinders their use. The objective of the present research programme, carried out jointly by URGC, SOGEA Rhone-Alpes and Greater Lyon, is to optimise trench design. The project is mainly based on an experimental study...

Assessment of WWTP design and upgrade options: balancing costs and risks of standards' exceedance

L. Benedetti, D. Bixio & P. A. Vanrolleghem
Numerical models can be used to evaluate design and upgrade scenarios of urban wastewater systems on the basis of their ecological consequences. The objective of this paper is to illustrate a systematic procedure of system design/upgrade. This procedure consists of the following steps: 1) data collection and data reconstruction, 2) model building and calibration, 3) evaluation of scenarios, 4) uncertainty assessment. In contrast to conventional practice, this approach allows to choose the most appropriate trade-off...

Numerical validation of various mixing rules used for up-scaled geo-physical properties

Johannes Bruining, Evert Slob, Willem-Jan Plug & Willem-Jan Plug
Our objective is to interpret laboratory measurements of effective dielectric permittivities as a function of water saturation during drainage and imbibition processes in a porous medium. Mixing rules are widely used to express effective properties of coefficients, e.g. diffusion coefficient, Darcy permeability, electric conductivity and the dielectric permittivity, appearing in heterogeneous diffusion like processes. Here we confine our interest to the electrostatic behaviour of a mixture because most of the mixing rules were derived to...

Performance and innovative behavior of employees. Development and application of a measurement tool for workplace research

Jan DUL, Martijn SCHEFFERS & Marten STIENSTRA

Integrated Design and Passive Houses for Arctic Climates

Petra Vladykova, Carsten Rode & Petra Vladykova
Integrated design is important for passive buildings and it has to be started in the early stage of the design process. The proposal of a new dormitory building in Sisimiut, Greenland will be an object of the paper where shape of the building, indoor climate and energy needs are crucial factors to be considered in the design project. The architectural proposal for the dormitory has given the building a cylindrical shape which gives great opportunity...

New Goals and Strategies for CSOs Control from Legal Aspect

T. Sakakibara, T. Masuta, M. Matsubara & S. Kato
This paper describes the new goals and strategies for Combined Sewer Overflows (CSOs) control in Japan, shows the amendment of Enforcement Order of Sewerage Law which support the CSOs control in legal aspect. Under the \342\200\234CSO control studying Committee\342\200\235, established by Ministry of Land Infrastructure and Transport in 2001, new goals for CSOs were proposed: i) to reduce the overflow\342\200\231s pollutants loads under the level of Separate Sewer System. ii) to halve the overflow events...

Organizational simulation: issues for ergonomics and for teaching of ergonomics’ action

Flore BARCELLINI & Laurent VAN BELLEGHEM
Activity-centered ergonomics has developed an approach to provide support for design projects which incorporates ergonomics work analysis, participatory design and simulation of work. As the approach has been initially developed and used in relation to technical and industrial design, there is nowadays an ongoing interest to apply it specifically to organizational design. In this communication, we examine the requirements for participating to organizational design settings and consequently the issues regarding the methods to be developed...

Pore-Network Approach for Calculating the Interfacial Area of Wetting/Non-Wetting Phases in Porous Media

Ioannis Tsimpanogiannis, Peter Lichtner, James Carey & Ioannis Tsimpanogiannis
In order to better understand and quantify many flow and transport processes in porous media (e.g. soil remediation strategies, reactive transport, CO2 sequestration, etc.) it is important to acquire a detailed knowledge of fluid-fluid and fluid-solid interfacial areas since they play a key role in the dynamics of multiphase flow and transport in porous media. Fluid-fluid interfacial areas (e.g., between wetting and non-wetting phases) control many mass transfer processes in porous media such as phase...

CDIO - The steam engine powering the electric grid

Chresten Træholt, Joachim Holbøll, Ole Cornelius Thomsen & Claus Kjærgaard
This paper describes in detail the steam engine system with associated electronics that serves as basis for the Design-build project The steam engine combined with 3-phase electric power generation was selected for several reasons being in part: 1) historical 2) efficiency with respect to energy conversion 3) dimension of playing into the learning process 4) highly illustrative with respect to the real world 5) potentially several tasks suited for large groups In this energy system...

Nutrient removal from stormwater detention ponds in subtropical Australia: pulling apart the ''''''''black box''''''''

M.L. Bayley, M. Greenway & P.C. Pollard
Many councils and management authorities within Australia are beginning to take steps to ameliorate downstream ecosystem affects of stormwater by creating treatment systems within individual catchments and sub-catchments. Commonly, detention ponds and wetlands are used in subtropical Australia as a means of both storing and treating stormwater before in reaches downstream receiving waters. The ability of detention ponds to store and treat stormwater is well document, but past research lacks the insight into how detention...

Optimal control strategies for stormwater detention tanks

M. Zawilski & G. Sakson
The paper presents the results of optimisation of a combined sewerage system draining a real urban catchment in the city of Lodz. Application of 8 storage tanks distributed on the catchment area and a single tank at the lower part of the cachment was analysed. The calculations were performed using a set of historical rainfalls from the two-year period. Detention volume distribution across the catchment and outflow characteristics of the storage tanks have an essential...

The Christmas Lights Student Project

Lauri Kantola, Aila Petäjäjärvi & Markku Saastamoinen
This poster represents the Christmas Lights Student Project and gives some ideas on how a successful student project can be carried out. It also introduces the institution of Kemi-Tornio University of Applied Sciences and its participation in the international CDIO conference for the first time. The K-T UAS has planned to join the CDIO initiative during the year 2011. We hope that this poster presentation together with a strong participation in the conference will offer...

Constituents'' annual load estimation from highways

M. Kayhanian, S. Ha & M. K. Stenstrom
Constituents\342\200\231 Annual Loads Estimation (CALE) is a program to estimate annual stormwater runoff constituent loads from highways and their shoulders. It uses Visual Basic for Applications, which is included with ArcGIS Desktop (ESRI, Redlands, CA). The program is based on the rational method and Event Mean Concentrations (EMCs), which has become a popular method of estimating constituent loads. The program uses several data sources which are spatially referenced by incorporation into Geographical Information System (GIS)...

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