Material Method Requirement Frequency Visual check and documentation check No damage Pipe Purchase specification: pipe dimensions within Measurement tolerance Each delivery (1) Visual inspection No damage Absorber sheet Purchase specification: Document check Parameters of optical characteristics (solar absorbance and thermal emittance) Visual inspection No damage Purchase specification: Pressure/leakage test Absorber Parameters of optical characteristics (solar shall be done on 100% of Document check absorbance and thermal emittance) absorbers- by supplier or and proper connection between absorber sheet manufacturer. and pipes (this may be a mechanical test also) Visual inspection No damage Each delivery Pressure/leakage test Pipe grid shall be done on 100% of Document check Purchase specification absorbers- by supplier or manufacturer. Reflector material, Each delivery (document reflector shape (if the Document check or direct test for shape Purchase specification: check) or less frequency if finished reflector is (e.g.: master shape ) Solar reflectance, shape it is tested delivered) Test for check performance (may be Heat pipes Purchase specification Variable done by heat pipe manufacturer) Variable (AQL should Heat transfer sheet Measurement Purchase specification refer to ISO2859-1) Glass tubes(assembly of Specific test method Purchase specification Variable absorber and glass cover) Purchase specification: dimensions and optical Measurement characteristics(solar transmittance) Glazing Each delivery (1) If only a document check is done, then there must Document check or direct test be a special agreement to assure optical characteristics Visual No damage Each delivery Purchase specification: density and thermal Document check Each delivery conductivity Insulation Weight measurement Each delivery (1) Manufacturer’s method Dimension measurement
Material Method Requirement Frequency Pipe Visual check and documentation check No damage Each delivery (1) Measurement Purchase specification: pipe dimensions within tolerance Absorber sheet Visual inspection No damage Document check Purchase specification: Parameters of optical characteristics (solar absorbance and thermal emittance) Absorber Visual inspection No damage Document check Purchase specification: Parameters of optical characteristics (solar absorbance and thermal emittance) and proper connection between absorber sheet and pipes (this may be a mechanical test also) Pressure/leakage test shall be done on 100% of absorbers- by supplier or manufacturer. Pipe grid Visual inspection No damage Each delivery Document check Purchase specification Pressure/leakage test shall be done on 100% of absorbers- by supplier or manufacturer. Reflector material, reflector shape (if the finished reflector is delivered) Document check or direct test for shape (e.g.: master shape ) Purchase specification: Solar reflectance, shape Each delivery (document check) or less frequency if it is tested Heat pipes Test for check performance (may be done by heat pipe manufacturer) Purchase specification Variable Heat transfer sheet Measurement Purchase specification Variable (AQL should refer to ISO2859-1) Glass tubes(assembly of absorber and glass cover) Specific test method Purchase specification Variable Glazing Measurement Purchase specification: dimensions and optical characteristics(solar transmittance) Each delivery (1) Document check or direct test If only a document check is done, then there must be a special agreement to assure optical characteristics Insulation Visual No damage Each delivery Document check Purchase specification: density and thermal conductivity Each delivery Weight measurement Manufacturer’s method Each delivery (1) Dimension measurement