European modelling group for solar systems

Directorate-General For Translation European Commission

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Energy research
Renewable sources of energy

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• Publié par: EUROPEAN-COMMISSION
• Nombre de lectures: 17
• Langue: English
• Poids de l'ouvrage: 17 Mo

Extrait

Commission of the European Communities
energy
EUROPEAN MODELLING GROUP
FOR SOLAR SYSTEMS
Report
EUR 10206 EN
Blow-up from microfiche original Commission of the European Communities
energy
EUROPEAN MODELLING GROUP
FOR SOLAR SYSTEMS
W.L. DUTRÉ
Katholieke Universiteit Leuven
Afdeling Toegepaste Mechanica en Energieconversie
Laboratorium voor Warmteoverdracht en Reaktorkunde
Celestijnenlaan, 300 A,
B-3030 Heverlee, Belgium
Contract No. ESA-M-078-B
FINAL REPORT
Directorate-General Science, Research and Development
1985 EUR 10206 EN Published by the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate­General
Information Market and Innovation
Bâtiment Jean Monnet
LUXEMBOURG
LEGAL NOTICE
Neither the Commission of the European Communities nor any person acting on behalf
of the n is responsible for the use which might be made of the following
information
(c) ECSC­ ­EEG—EAEC Brussels ■ Luxembourg, 1986 III
TABLE OF CONTENTS
Abstract. V
Summary. VI
EMG-Participants. VII
] CHAPTER"!: Introduction: Solar System Models and EMG-Objectives.
1.1. The use of Solar Sytem Models. 1
1.1.a. Use of detailed simulation models. 2
I.l.b. Simplified methods. 3
1.2. Validation of Solar System Simulation Models. 4
1.3. Objectives and Organisation of the 1981-1983 EMG-Program. 7
List of EMG-Working Documents of the3. 9
CHAPTER 11: EMGP2, A generalised solar system simulation program. 12
II. 1. EMGP1 : the first version of the European Modelling Group Program.
II.2. EMGP2: a generalised version of the European Modelling Group Program. 14
CHAPTER III: Model Validation.
Validation Calculations'Tor the SPTI-Reference System 22
111.1. The SPTF-reference system. 22
111.2. Validation methodology.7
111.2.1. Different validation methods used
111.2.2. Estimation of the statistical uncertainty margins. 51
III.5. SPTF-reference system data files used for' model validation 7>S
111.4. Results of validation calculations according to method I. 39
111.5.s ofnsg to method 2 81
111.6. Main conclusions and suggestions for improvements. ¡3(1
CHAPTER IV: EMGP2 Applications.
Domestic Solar System Studies. 132
IV. 1. Comparative study of Different types of Solar Water Heaters. 138
IV.2. A parametric investigation for Solar Water Heater Type 3. 159
IV.3. Comparative study of difieren', types of combined systems for
Space Heating and Domestic Hot Water Production. 18
CONCLUSIONS. 267 IV
Table of contents [continued!:
Annex A: Statistical Validation method. 271
Annex B: EMG - Strategy paper. 29
Annex C: EMG - Newsletters 7 to 14. 309
Annex D: Example of an SPTF-reference system installation descriptor. 344
Annex E:-Example of validation calculation reporting formats. 350
Annex F: SPTF-reference system data files distributed to EMG. 37
Annex G: System studies 1 and II: Solar Water Heaters.
Systems des;ription and simulations performed. 38a
Annex H: System study III: Combined Space Heating and Hot Water Production
Systems: Systems descriptions and simulations performed. 4] 3
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ABSTRACT
A detailed and modularly structured simulation program for thermal solar systems
has been developed, called EMGP2 (European Modelling Group Program 2). The
program has the capability of handling a large variety of different solar systems
which cao-be composed from the available elementary components, subsystems and
controllers.
The program has been validated against the experimental data obtained from the
Solar Pilot Test Facility reference systems (another concerted action of the C.E.C.).
EMGP2 has been used for a comparative system study of different types of solar
water heaters and different types of combined systems for space heating and hot
water production. It also constitutes the reference for the development of the
European simplified methods ESM for solar system performance calculations. IV.
SUMMARY
During the period from June 1981 to June 1983, the European Modelling Group for
Thermal Solar Systems, a concerted action of the Commission of the European
Communities, devoted its coordinated research work to the development of an
simulation program for solar systems for space heating and domestic hot water
production.
This development, starting from a first program of limited scope (called EMGP1),
resulted in the generalised simulation program EMGP2 (European Modelling Group
Programme 2), which has the capability to handle a very large variety of thermal
solar as well as non-solar systems. A detailed manual for the use of EMGP2 has
been prepared and will be published by the Commission of the European Communities
as Volume 5 of its series "Solar Thermal Energy in Europe." (Reidei pubi.co.).
First with EMGP1 and afterwards with EMGP2, the simulation model has been
critically examined and validated for the reference system of the Solar Pilot Test
Facilities, another concerted action of the Solar Energy R.& D. programme of the
Commission of the European Communities. Based on accurate experimental data of
many experimental sequences from the different Pilot Test Facilities, the detailed
validation mainly allowed to conclude that the simulation model is at least as
accurate as the experimental data themselves. It follows that a satisfactory level of
confidence in the simulation model has been acquired for the class of systems for
which the SPTF-reference system is representative. The validation is however to be
continued for other types of solar systems.
As a practical application of the simulation program EMGP2, a series of system
studies has beer, undertaken by the EMG-participants, including different types of
domestic hot water systems as well as combined systems for space heating and hot
water production, for different European climatic regions. These comparative
system studies are of particular interest since all results are obtained according to
tht sam- simulation principles and mathematical algorithms, such that reliable
system performance differences are obtained. This applied simulation work also
allowed, although on a purely theoretical basis, to test several features of the
simulation program which were not incluoed in the validated system configuration. A third important activity of the EMG during this period, was devoted to the
development of simplified methods allowing for fast calculations fo solar systems
performance values. EMGP2 was used as a reference simulation program for this
simplified methods development. This work mainly resulted in the development of a
first European simplified method for solar space heating systems, called ESM1,
which has been shown to be more accurate in European climatic conditions than other
existing simplified methods.
The work of each of the individual EMG-participants is described in detail in the
participant's final reports of this EMG-contract period. The report presented here
does not repeat all the details of the work of the EMG, nor does it describe the
history of the gradual progres of the modelling and validation work, but it gives an
overview of the main results related to the detailed simulation program, i.e. the
final results of its validation and the considered applications. For a datailed
description of the simulation program, the reader is referred to the EMGP2-handbook
and for the simplified method ESM1 and its development, a separate final report of
the subcooniinator of this EMG-task is available. VI
E. M. G. Participants
During the period from June 1,1981 to June 30,1983, the European Modelling Group
grouped modelling experts from different countries of the European Communities,
including a modelling expert of each country in which a Pilot Test Facility had been
built and whose work was directly linked with the Pilot Test Facility of his country.
The coordination of the EMG-work was split into a main coordination task, mainly
related to the detailed simulation model activities and a sub-coordination task devoted
to the· development of simplified methods. The participants are listed below.
Coordination:
Main coordinator: W.L. Dutré, (K.U.Leuven, Belgium)
Sub-coordinator: J. Adnot, (Ecole des Mines de Paris, France)
Scientific Secretaries: P. De Ceuninck, G. Lammens (K.U.Leuven, Belgium)
Participants with direct links with the SPTF-pro ject:
Belgium: A. Debosscher (K.U.Leuven)
Denmark: 0. Balslev-Olesen (Technical University of Denmark, Lyngby)
France: B. Verdier, C. Eichenbaum (Commissariat à l'énergie atomique, Cadarache)
Germany" J. Reichert (Fraunhofer Gesellschaft, Karlsruhe )
Ireland: M. Frani;, F. Boland (Trinity College, Dublin)
Italy: A. Bionda (Phoebus, Catania)
The Netherlands: E. Van Galen, J. Havinga ( T.P.D. - T.N.O., Delft)
United Kingdom: S. Lafontaine, E. Mc.Grath (Faber Computer Operations, St.Albans)
Participants without links with the SPTF-pro ject:
B. Bourges, E. Peuportier: Ecole des Mines de Paris ,France.