04/30113519 DC : DRAFT MAY 2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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EN 12975-2 - THERMAL SOLAR SYSTEMS AND COMPONENTS - SOLAR COLLECTORS - PART 2: TEST METHODS
04-28-2006
11-23-2012
FOREWORD
1 SCOPE
2 REFERENCES
3 TERMS AND DEFINITIONS
4 SYMBOLS AND UNITS
5 RELIABILITY TESTING OF LIQUID HEATING COLLECTORS
5.1 General
5.2 Internal pressure tests for absorbers
5.2.1 Metallic absorbers
5.2.2 Absorbers made of organic materials
(plastics or elastomers)
5.3 High-temperature resistance test
5.3.1 Objective
5.3.2 Apparatus and procedure
5.3.3 Test conditions
5.3.4 Results
5.4 Exposure test
5.4.1 Objective
5.4.2 Apparatus and procedure
5.4.3 Test conditions
5.4.4 Results
5.5 External thermal shock test
5.5.1 Objective
5.5.2 Apparatus and procedures
5.5.3 Test conditions
5.6 Internal thermal shock test
5.6.1 Objective
5.6.2 Apparatus and procedure
5.6.3 Test conditions
5.6.4 Results
5.7 Rain penetration test
5.7.1 Objective
5.7.2 Apparatus and procedure
5.7.3 Test conditions
5.7.4 Results
5.8 Freeze resistance test
5.8.1 Objective
5.8.2 Apparatus and procedure
5.8.3 Test conditions
5.8.4 Results
5.9 Mechanical load test
5.9.1 Positive pressure test of the collector
cover
5.9.2 Negative pressure test of fixings between
the cover and the collector box
5.9.3 Negative pressure test of collector
mountings
5.10 Impact resistance test
5.10.1 Objective
5.10.2 Apparatus and procedure
5.10.3 Test conditions
5.10.4 Results
5.11 Final inspection
5.12 Test report
6 THERMAL PERFORMANCE TESTING OF LIQUID HEATING
COLLECTORS
6.1 Glazed solar collectors under steady state
conditions including pressure drop)
6.1.1 Collector mounting and location
6.1.2 Instrumentation
6.1.3 Test installation
6.1.4 Outdoor steady-state efficiency test
6.1.5 Steady-state efficiency test using a solar
irradiance simulator
6.1.6 Determination of the effective thermal
capacity and the time constant of a collector
6.1.7 Collector incidence angle modifier
6.1.8 Determination of the pressure drop across a
collector
6.2 Unglazed solar collectors under steady conditions
(including pressure drop)
6.2.1 Collector mounting and location
6.2.2 Instrumentation
6.2.3 Test installation
6.2.4 Outdoor steady state efficiency test
6.2.5 Steady-state efficiency test using a solar
irradiance simulator
6.2.6 Determination of the effective thermal capacity
and the time constant of a collector
6.2.7 Incidence angle modifier (optional)
6.2.8 Determination of the pressure drop across a
collector
6.3 Glazed and unglazed solar collectors under
quasi-dynamic conditions
6.3.1 Collector mounting and location
6.3.2 Instrumentation
6.3.3 Test installation
6.3.4 Outdoor efficiency test
6.3.5 Determination of the effective thermal
capacitance
6.3.6 Collector incidence angle modifier
6.3.7 Determination of the pressure drop across a
collector
ANNEX A (NORMATIVE) Schematics for durability and
reliability tests
ANNEX B (NORMATIVE) Durability and reliability test
report sheets
ANNEX C (NORMATIVE) Stagnation temperature of liquid
heating collectors
ANNEX D (NORMATIVE) Performance test report for glazed
solar collectors
ANNEX E (NORMATIVE) Performance test report summary for
glazed collectors
ANNEX F (NORMATIVE) Performance test for unglazed solar
collectors
ANNEX G (NORMATIVE) Performance test report summary for
unglazed collectors
ANNEX H (NORMATIVE) Modelling of the coefficients c[1] to
c[6] of the collector model of 6.3
ANNEX I (INFORMATIVE) Definition of areas of glazed liquid
heating collectors
ANNEX J (INFORMATIVE) Measurement of effective thermal
capacity
ANNEX L (INFORMATIVE) Properties of water (see ISO 9806-1)
ANNEX M (INFORMATIVE) Performance test report summary for
quasi dynamic test method
ANNEX N (INFORMATIVE) Comparison between EN 12975 and
ISO 9806
ANNEX O (INFORMATIVE) General guidelines for the assessment
of uncertainty in solar collector
efficiency testing
ANNEX P (INFORMATIVE) Determination of the pressure drop
across a collector
BIBLIOGRAPHY
EN 12975-2
| Committee |
RHE/25
|
| DocumentType |
Draft
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| PREN 12975-2 : DRAFT 2004 | Identical |
| ISO 9845-1:1992 | Solar energy — Reference solar spectral irradiance at the ground at different receiving conditions — Part 1: Direct normal and hemispherical solar irradiance for air mass 1,5 |
| ISO 9459-1:1993 | Solar heating — Domestic water heating systems — Part 1: Performance rating procedure using indoor test methods |
| ISO 9488:1999 | Solar energy Vocabulary |
| ISO 9060:1990 | Solar energy Specification and classification of instruments for measuring hemispherical solar and direct solar radiation |
| EN 12975-1:2006+A1:2010 | Thermal solar systems and components - Solar collectors - Part 1: General requirements |
| ISO/TR 9901:1990 | Solar energy Field pyranometers Recommended practice for use |
| ISO 9847:1992 | Solar energy — Calibration of field pyranometers by comparison to a reference pyranometer |
| EN ISO 9488:1999 | Solar energy - Vocabulary (ISO 9488:1999) |
| ISO 5167-1:2003 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements |
| ISO 9459-2:1995 | Solar heating — Domestic water heating systems — Part 2: Outdoor test methods for system performance characterization and yearly performance prediction of solar-only systems |
| ISO 9806-1:1994 | Test methods for solar collectors Part 1: Thermal performance of glazed liquid heating collectors including pressure drop |
| BS 6757:1986 | Methods of test for thermal performance of solar collectors |
| ISO 9846:1993 | Solar energy Calibration of a pyranometer using a pyrheliometer |
| ISO 9806-2:1995 | Test methods for solar collectors Part 2: Qualification test procedures |
| ISO 9806-3:1995 | Test methods for solar collectors — Part 3: Thermal performance of unglazed liquid heating collectors (sensible heat transfer only) including pressure drop |
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