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04/30113519 DC : DRAFT MAY 2004

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

EN 12975-2 - THERMAL SOLAR SYSTEMS AND COMPONENTS - SOLAR COLLECTORS - PART 2: TEST METHODS
Superseded date

04-28-2006

Published date

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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