UNI EN 12975-2 : 2006

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 test for absorbers
  5.3 High-temperature resistance test
  5.4 Exposure test
  5.5 External thermal shock test
  5.6 Internal thermal shock test
  5.7 Rain penetration test
  5.8 Freeze resistance test
  5.9 Mechanical load test
  5.10 Impact resistance test (optional)
  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)
  6.2 Unglazed solar collectors under steady state conditions
       (including pressure drop)
  6.3 Glazed and unglazed solar collectors under quasi-dynamic
       conditions
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.3 Internal pressure test for absorbers made of organic
           materials
      B.4 High-temperature resistance test
      B.5 Exposure test
      B.6 External thermal shock test:
      B.7 Internal thermal shock test:
      B.8 Rain penetration test
      B.9 Freeze resistance test
      B.10 Mechanical load test
      B.11 Impact resistance test using steel balls
      B.12 Impact resistance test using ice balls
      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
Annex G (normative) Measurement of effective thermal capacity
      G.1 Test installation
      G.2 Indoor test procedure
      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
Annex I (informative) Properties of water (see DIN V
                      4757-4:1995-11)
      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

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