Method and the device for determination of thermal conductivity, preferably of insulating materials

摘要

method of determining thermal conductivity and insulating materials, is one of the heating surface of the sample.registration of temperature value and temperature value on the surface of the nagrzewanej on the surface opposite to the nagrzewanej and after stabilizing both measured temperature value setson the basis of material thermal conductivity is that the test sample (5), preferably in the form of a block prostopadłościennej or cylindrical, placed so,to its lower surface (5b) coincides directly with the liquid (10) termostatowaną temperature higher than ambient temperature, preferably water.which heats up the surface (5b) to force the heat flow by conduction in the direction of thickness of the test sample (5) and is made bezstykowego measuring temperature on the top of hererzchni (5a) by positive thermal cameras (11),at the same time, measure temperature, lower surface (5b) by termoelementu (7) submerged in the liquid and stykającego with the bottom surface (5b) of the sample (5).device for determining thermal conductivity especially insulating materials is characterized by theit is built from a tank (1) for the liquid (10) zaizolowanego external thermal insulation (2), on which is placed covering (3) sealing.and inside the tank (1) is embedded heating element (6) and (7 termoelement), which is connected with the temperature regulator (8) and on the test sample (5) posadowioną on supports (4),is mounted on a stand (12) of adjustable (r) of infrared detector, preferably infrared camera (11).is equipped with the przelewowy (9) checking out the excess liquid from the tank (1).is equipped with the poziomującą (13) preferably via adjustable bolts (14), which is posadowiony tank (1).