MEASURING METHOD FOR CONVECTION HEAT TRANSMISSIBILITY AND DEVICE THEREOF

• Main Authors: IBAMOTO TADAHIKO, ARAKAWA YOSHIAKI, KAWAI MIKIO
• Format: Patent
• Language: English
• Published: 28.07.1983
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

PURPOSE:To enable measuring of only a convection heat transmissibility, by a method wherein a flat plate is partitioned into two parts having different radiation rates, and a measurement is made on a quantity of radiation heat and an atmosphere temperature at a time when temperature is controlled so that surface temperatures at all parts are equal to each other. CONSTITUTION:A flat plate 11 is partitioned into two flat parts 11a and 11b, heat flow meters 12a and 12b are mounted to the backs thereof, heating plates 13a and 13b are further attached to the back thereof, and a temperature controller 15 is connected thereto. A temperature measuring elements 14a and 14b are located in the proximity of the surfaces of the flat plates 11a and 11b, and a temperatures element 17 is installed to the surface side thereof. In this constitution, based on the outputs of the temperature elements 14a and 14b, the surface temperature of the two flat plates 11a and 11b are made equal by the temperature controller 15. A measurement is conducted on the heat flow densities of the heat flow meters 12a and 12b under this condition to measure the atmosphere temperature of the temperature measuring element 17. Based on the measurements, only a convection heat transmissibility can be computed from a given computing formula.