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标题:ASTM C335/C335M-10e1管道绝热材料稳态热传递特性试验方法
正文:
ASTM C335/C335M-10e1 Standard Test Method for Steady-State Heat Transfer Properties of Pipe InsulationASTM C335/C335M-10e1 管道绝热材料稳态热传递特性试验方法1. ASTM C335/C335M标准适用范围1.1 This test method covers the measurement of the steady-state heat transfer properties of pipe insulations. Specimen types include rigid, flexible, and loose fill; homogeneous and nonhomogeneous; isotropic and nonisotropic; circular or non-circular cross section. Measurement of metallic reflective insulation and mass insulations with metal jackets or other elements of high axial conductance is included; however, additional precautions must be taken and specified special procedures must be followed.1.2 The test apparatus for this purpose is a guarded-end or calibrated-end pipe apparatus. The guarded-end apparatus is a primary (or absolute) method. The guarded-end method is comparable, but not identical to ISO 8497.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The val
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