Optimal Engineering Design for Dependable Water and Power Generation
in Remote Areas Using Renewable Energies and Intelligent Automation
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The 8th and final project meeting
The 8th and final project meeting took place on 20th-22nd of December 2010 in Hammamet, Tunisia.... more
 
Workpackage 2

WP-2: Modelling, Simulation and Construction of the RO Plant

Workpackage number: WP-2 Start date or starting event: 0

Participants: ES DE TN Total PM Person-months per participant: 15 9 1 25

Objectives

O-2.1: To establish notation, data structure and input/output interfaces for the modelling and simulation

O-2.2: To develop a dynamical model for the RO plant and its subcomponents

O-2.3: To implement a modular library of components for the simulation tool

O-2.4: To verify the behaviour of the model according to real data of the plant

O-2.5: To define specifications and to design a reconfigurable RO prototype

O-2.6: To construct the set-up according to specifications and design

O-2.7: To start up the plant and to run a battery of test on the prototype unit

Description of work

T-2.1: Review on existing models and simulation tools for RO plants (ES): Models and simulation tools from the literature will be carefully reviewed in order to update the state of the art.

T-2.2: Mathematical modelling and library implementation (ES, DE): Mathematical models for the components, which integrate the RO plant, will be carried out according to the plant design in order to analyse its dynamic characteristics. The modelling will be done using physical laws and mathematical relationships applying also the experimental experience and expertise of participants. Modules for pre-treatment and post-treatment as well as for the RO units and the pumping subsystem have to be designed according to the conventions and interfaces defined for mathematical descriptions and for the software development. Modules should be coupled, tested and delivered as a complete simulation unit. The model has to rely on the necessary granularity to allow fault detection and dynamic predictions.

T-2.3: Simulation (ES, DE): The model obtained in the previous Task will be simulated by using the simulation tool chosen in WP-5.

T-2.4: RO-plant design and construction (CO1, DE): A concept for a RO plant for brackish water, which has to be able to be reconfigured, has to be designed: Several RO units shall be switched in series (two-pass permeate with concentrate recycling) or in parallel (one-pass permeate with energy recovery pump). Moreover, permeate recycling and mixing have also to be possible. It should be possible to switch off and on each pressure vessel separately. The pumping subsystem has to be flexible enough to perform similarly, independently of the current configuration. Power requirements for a plant with a maximum production capacity of about 100 m 3 /d have to be estimated and reported to the power management group. Since plant automation is part of the project, the integrated automation system of common commercial plants is not necessary here and it should not be included into the plant, which will be considered finished at sensor level. Because it is a laboratory prototype, additional sensors (according to the specifications) should beinstalled.

Pre-treatment and post-treatment stages will be designed in order to be flexible and tuneable, so that chemicals can be adapted according to changes in the water analysis. Selection of chemical components is not part of this work package and will be chosen at a later stage (WP-7). Plans for the construction have to be drawn. The laboratory prototype shall be constructed according to the defined specifications and given drawings.

T-2.5: Start-up and testing (CO1, TN): Once the prototype is built, start-up and running tests will be carried out to proof the prototype and to gain experience on the plant characteristics and behaviour. Data logging for model validation purposes has also to be performed.

T-2.6: Verification and validation of models for components and processes (TN, ES, DE): Development, verification and validation of modules will be performed by participant groups using actual plant data obtained from the test bed.

Deliverables

D-2.1: A set of algebraic and differential equations describing the dynamic of the plant

D-2.2: A running simulation model for a reference plant

D-2.3: A modular library of components to be integrated with the other libraries to allow the simulation of the whole system

D-2.4: A report about the model including the theoretical background

D-2.5: A user guide describing the modules and the form to be used

D-2.6: Complete set of plans of the prototype

D-2.7: Report about the estimation of the power demand for the plant

D-2.8: RO desalination prototype

D-2.9: Report about the RO plant and its characteristics

Milestones and expected result

M-2.1: Start mathematical modelling after completing review and receiving specifications

M-2.2: Finish mathematical model and transfer modules to WP-5

M-2.3: Prototype delivered

M-2.4: Start-up and laboratory testing completed. Start point for model validation

M-2.5: Start model validation after prototype start-up

R-2.1: Adequate models of components for simulation and control purposes

R-2.2: Successful testing and prototype delivery

Tasks T-2.4 and T-2.5 shall be carried out by a specialized company (CO1) as subcontractor.

T-2.6 shall also be performed by the also subcontracted company (CO2).