Renewable energy group

Transcription

1 Renewable energy group > Peter RIEDERER, CSTB PAGE 1

2 REN at CSTB 4 missions: Technical evaluation of REN products and components R&D for industrial developments Assist public authorities Dissemination PAGE 2

3 Technical evaluation Solar thermal Test facilities for the evaluation of thermal and mechanical performances of solar thermal components and systems Large demand on certification and technical approvement PAGE 3

4 Innovation Solar thermal Controller for solar combi-systems Solar panel - thin Solar panel - air PAGE 4

5 Innovation Geothermal Geothermal platform (R&D) Borehole field Multi-site approach (BRGM) GEOBAT (F) et MESSIB (EU) Seasonal storage in the ground Optimisation Absorption heat pump Semi-virtual platform PEPSY Evaluation methodology geothermal heat pumps COFOGE Energy piles PAGE 5

6 Innovation Photovoltaics Integration in buildings and facades Integration in systems - hybrid Single, double or triple glazing Assessment of: Temperatures Weather data Electricity production Impact of cooling of PV modules Better efficiency Use of thermal energy PAGE 6

7 Assist public authorities Solar Thermal Performance evaluation of the PLAN SOLEIL - Monitoring milliers de tonnes de CO temps Avoided CO2 emissions using solar DHW systems in the frame of the Plan Soleil GWh énergie primaire Avoided primary energy using solar DHW systems in the frame of the Plan Soleil temps PAGE 7

8 Assist public authorities Geothermal Roadmap for the development of GT heat pumps in France for the french energy agency - ADEME Etat de l art Définition des besoins Adaptation et nouveaux développements Aspects non-technologiques Démonstration et vérification des performances Diffusion, formation, évaluation et prospective Incitations, subventions etc. Etat de l art: Technologies disponibles à l étranger Transfert des technologies vers la France Suivis des performances réelles Formation Besoins et demande R&D Nouveaux développements Barrières nontechnologiques Aspects socioéconomiques Démonstration Analyse Incitation du marché Essais sur plateformes Diffusion du savoir Plateformes d essais PAGE 8

9 Assist public authorities Real performances of heat pumps Website CSTB on heat pumps Real pereformances of geothermal heat pumps Information on technologies Automatic generation of reports of monitored projects using dynamic databases Online comparison of all projects in the database (performances, costs etc.) Guidelines for future monitoring projects To date only GT - all heat pumps in the future Monitoring methodologies of heat pumps (SEPEMO) Develop monitoring methodologies and guidelines for heat pumps Adaptat Valpac Website Monitoring projects Cité du Design (energy piles) Etap Hotel Blagnac (borehole fields) PAGE 9

10 Dissemination Websites Software Guidelines PAGE 10

11 A Global approach for evaluating seasonal performances of heat pumps PAGE 11

12 Global concept Objectives : To develop a global approach for testing real performances of heat pump systems connected to BTES. To optimise the global efficiency of these systems System components Building (with its emitters), HP, BTES, controllers, eventually water storage, solar collectors, How? Setting up a multi-application testing platform Expected Results/Tools : Validated models for optimisation of BTES Validated testing methods for the different parts of the systems and for the global system 706/10/2009 mars 2008 Saint Gobain PAGE 12 12

13 Global concept GT Platform Semi-virtual Platform PEPSY Testing GSHP systems by emulation Validation of borehole and BTES models for different configurations Testing controllers by emulation Combination between product testing and modelling by using model identification switch between different simulation environments Ability to freely vary the border between the simulated and real part of the system 706/10/2009 mars 2008 Saint Gobain PAGE 13 13

14 Semi virtual platform PEPSY PEPSY : Platform for the Evaluation of Performances of dynamic SYstems Principle : Emulation for any water flowed energy system in the power range up to 50 kw A product can be tested under «quasi» realistic dynamic conditions Simulation is slowed down to real time Real part : 4 different circuits can be utilised Simulated Part : Matlab/Simulink or TRNSYS 706/10/2009 mars 2008 Saint Gobain PAGE 14 14

15 Testing method Approach : Objective : Holdback : Mixture between annual simulation and a 12-day test in real time To assess annual performances of a system in a 12-day test, each day representing a «typical» day of one month High inertia of the ground part of the system : state conditions in the ground have a significant influence on the heat pump performance Need of a validated model Development of the methodology Annual simulation of a geothermal heat pump for different climates, buidings, ground type, Development of a first test sequences by calculation of average days representing each the average of one month adjustment of the average days in order to fit the extrapolated, annual consumption by the 12 day-test method with those calculated by annual simulation (optimisation of the test sequence) validation of the method comparing the test results of the real heat pump with monitoring results of the same heat pump. 706/10/2009 mars 2008 Saint Gobain PAGE 15 15

16 BTES Platform 6 boreholes rectangular shaped storage : - 20m depth, equipped with double U-pipes - temperature sensors are integrated at the center of each double U-pipe at 3 different levels (1m, 10m and 20m depth) - boreholes backfilled with a 2W/(mK) conductivity blend 5 additionnal boreholes - drilled to perform soil temperature measurements - boreholes backfilled with concrete Estimated storage volume : 1700m 3 (water equivalent : 800m3) 06/10/2009 PAGE 16 16

17 BTES Platform A multi configuration experimental platform It is possible to perform testing sequences for different BTES configurations : - modifying the hydraulic network - modifying control strategies of heat injection/extraction 06/10/2009 PAGE 17 17

18 BTES model General description : 3D numerical model Finite difference method Implemented in Matlab / Simulink T T T T Governing equation : ρ s Cps = λs t x y z State space resolution : X = AX + BU Main parameters: Number of boreholes Borehole spacing Several ground layers : thermal conductivity, heat capacity, density Hydraulic network Couleurs interpolées! 706/10/2009 mars 2008 Saint Gobain PAGE 18 18

19 BTES model Header Volume Volume with GHEs Footer Volume Weather conditions Temperature profile 2x3 borehole field One borehole Mesh around the borehole field Mesh around one borehole Node coupled with pipe model The ground model is coupled to ground heat exchangers models : heat transfers calculations between the fluid and the borehole wall are solved in steady state conditions use of thermal resistance 706/10/2009 mars 2008 Saint Gobain PAGE 19 19

20 Conclusion Global approach Evaluation of performances of GSHP systems Final objectives To dispose of validated models for optimisation of BTES systems To dispose of validated testing method for the different parts of the system as well as the global system Testing method validation good agreement for directly obtaining geothermal heat pump annual performances in the case of a simulated heat pump BTES Platform operationnal, test sequences will be carried out soon 06/10/2009 PAGE 20 20