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I.S. EN 12975-2:2006

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

THERMAL SOLAR SYSTEMS AND COMPONENTS - SOLAR COLLECTORS - PART 2: TEST METHODS

Available format(s)

Hardcopy , PDF

Superseded date

27-11-2013

Language(s)

English

Published date

01-01-2006

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.


Dates of withdrawal of national standards are available from NSAI.

Foreword
Introduction
1 Scope
2 Normative 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 Inorganic 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 procedure
       5.5.3 Test conditions
       5.5.4 Results
  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
       5.9.2 Negative pressure test of the collector
  5.10 Impact resistance test (optional)
       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 performance 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 state 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 capacity
       6.3.6 Collector incidence angle modifier
Annex A (normative) Schematics for durability and
                    reliability tests
Annex B (normative) Durability and reliability test report
                    sheets
      B.1 Record of test sequence and summary of main
           results
      B.2 Internal pressure test for inorganic absorbers
           B.2.1 Technical details of collector
           B.2.2 Test conditions
           B.2.3 Test results
      B.3 Internal pressure test for absorbers made of organic
           materials
           B.3.1 Technical details of collector
           B.3.2 Test conditions
           B.3.3 Test results
      B.4 High-temperature resistance test
           B.4.1 Method used to heat collectors
           B.4.2 Test conditions
           B.4.3 Test results
      B.5 Exposure test
           B.5.1 Test conditions
           B.5.2 Test results
           B.5.3 Climatic conditions for all days during the test
           B.5.4 Time periods in which irradiance and surrounding
                 air temperature have values greater than those
                 specified in Table 4
           B.5.5 Inspection results
      B.6 External thermal shock test:
           B.6.1 Test conditions
           B.6.2 Test results
      B.7 Internal thermal shock test:
           B.7.1 Test conditions
           B.7.2 Test results
      B.8 Rain penetration test
           B.8.1 Test conditions
           B.8.2 Test results
      B.9 Freeze resistance test
           B.9.1 Collector type
           B.9.2 Test conditions
           B.9.3 Test results
      B.10 Mechanical load test
           B.10.1 Positive pressure test of the collector cover
           B.10.2 Negative pressure test of fixings between the
                  cover and the collector box
           B.10.3 Negative pressure test of collector mountings
      B.11 Impact resistance test using steel balls
           B.11.1 Test conditions
           B.11.2 Test procedure
           B.11.3 Test results
      B.12 Impact resistance test using ice balls
           B.12.1 Test conditions
           B.12.2 Test procedure
           B.12.3 Test results
      B.13 Final inspection results
Annex C (normative) Stagnation temperature of liquid
                    heating collectors
      C.1 General
      C.2 Determination of stagnation temperature
Annex D (normative) Performance test report for glazed
                    solar collectors
      D.1 General
      D.2 Solar collector description
      D.3 Test results
Annex E (normative) Performance test report for unglazed
                    solar collectors
      E.1 General
      E.2 Solar collector description
      E.3 Test results
Annex F (normative) Modelling of the coefficients c[1] to c[6]
                    of the collector model of 6.3
Annex G (normative) Measurement of effective thermal
                    capacity
      G.1 Test installation
      G.2 Indoor test procedure
          G.2.1 General
          G.2.2 Measurements
          G.2.3 Calculation of the effective thermal capacity
          G.2.4 Determination of effective thermal capacity from
                experimental data
      G.3 Outdoor or solar irradiance simulator test procedure
Annex H (informative) Comparison of the collector model
                      of 6.1 to the collector model of 6.3
Annex I (informative) Properties of water
      I.1 Density of water (at 1 bar) in kg/m[3]
      I.2 Specific heat capacity of water (at 1 bar) in kJ/(kg K)
Annex J (informative) Performance test report summary for
                      quasi dynamic test method
Annex K (informative) General guidelines for the assessment
                      of uncertainty in solar collector efficiency
                      testing
      K.1 Introduction
      K.2 Measurement uncertainties in solar collector
          efficiency testing
Annex L (informative) Determination of the pressure drop
                      across a collector
      L.1 General
      L.2 Test installation
      L.3 Preconditioning of the collector
      L.4 Test procedure
      L.5 Measurements
      L.6 Pressure drop caused by fittings
      L.7 Test conditions
      L.8 Calculation and presentation of results
Bibliography

Defines test methods for validating the durability, reliability and safety requirements for liquid heating collectors as specified in EN 12975-1.

DocumentType
Standard
Pages
142
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
UNI EN 12975-2 : 2006 Identical
NBN EN 12975-2 : 2006 Identical
EN 12975-2:2006 Identical
SN EN 12975-2 : 2006 Identical
NEN EN 12975-2 : 2006 Identical
NF EN 12975-2 : 2006 Identical
NS EN 12975-2 : 2ED 2006 Identical
BS EN 12975-2:2006 Identical
UNE-EN 12975-2:2006 Identical
DIN EN 12975-2:2006-06 Identical

S.R. 50-2:2012 BUILDING SERVICES CODE OF PRACTICE - PART 2: THERMAL SOLAR SYSTEMS

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
ISO 9553:1997 Solar energy — Methods of testing preformed rubber seals and sealing compounds used in collectors
EN 12975-1:2006+A1:2010 Thermal solar systems and components - Solar collectors - Part 1: General requirements
NFP 50 501 : 1980 LIQUID CIRCULATION SOLAR DETECTING ELEMENTS - MEASUREMENT OF THERMAL PERFORMANCES
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 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 5167-1:2003)
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
ASHRAE HDBK REFRIGERATION : 2014 ASHRAE HANDBOOK - REFRIGERATION
ASHRAE 41.7 : 2015 METHODS FOR GAS FLOW MEASUREMENT
ISO 9806-1:1994 Test methods for solar collectors Part 1: Thermal performance of glazed liquid heating collectors including pressure drop
ISO 9808:1990 Solar water heaters Elastomeric materials for absorbers, connecting pipes and fittings Method of assessment
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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