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用热流计法测定稳态热传递特性的标准试验方法  
 【英文标准名称】  Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
 【原文标准名称】  用热流计法测定稳态热传递特性的标准试验方法
 【标准号】  ASTM C518-2004
 【标准状态】  Active
 【国别】  
 【发布日期】  2004
 【实施或试行日期】  
 【发布单位】  美国材料与试验协会(US-ASTM)
 【起草单位】  C16.30
 【标准类型】  (Test Method)
 【标准水平】  ()
 【中文主题词】  建筑;测量;热流;特性;试验;热传导;测量仪器;分析方法
 【英文主题词】  calibration; error analysis; heat flow meter apparatus; thermal resistance; heat flux; instrument verification; thermal conductivity; thermal testing
 【摘要】  

1.1 This test method covers the measurement of steady state thermal transmission through flat slab specimens using a heat flow meter apparatus.

1.2 The heat flow meter apparatus is used widely because it is relatively simple in concept, rapid, and applicable to a wide range of test specimens. The precision and bias of the heat flow meter apparatus can be excellent provided calibration is carried out within the range of heat flows expected. This means calibration shall be carried out with similar types of materials, of similar thermal conductances, at similar thicknesses, mean temperatures, and temperature gradients, as expected for the test specimens.

1.3 This a comparative, or secondary, method of measurement since specimens of known thermal transmission properties shall be used to calibrate the apparatus. Properties of the calibration specimens must be traceable to an absolute measurement method. The calibration specimens should be obtained from a recognized national standards laboratory.

1.4 The heat flow meter apparatus establishes steady state one-dimensional heat flux through a test specimen between two parallel plates at constant but different temperatures. By appropriate calibration of the heat flux transducer(s) with calibration standards and by measurement of the plate temperatu

 【中国标准分类号】  A54
 【国际标准分类号】  91_120_10
 【页数】  15P.;A4
 【正文语种】  
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