| 摘要 |
PURPOSE:To enable to perform an experiment on the dew condensation and the frost setting in a short time, by providing a sample holder on a rotary table and cooling the surface of the inner wall to a temperature of dew point or frost point of the sample with a cooler using a cooling medium of liquid or gas and making the surface of the sample dewed or frosted. CONSTITUTION:The sample holder 5 is fixed on the rotary table 3 and the sample holding jig 6 is fitted up on each face of the holder 5 and then, the test piece 7 is attached to the jig 6. The holder 5 is hermetically sealed execpt an entrance and exit of cooling medium and multitubular cooler 8 is provided on the inner wall of the surface laid on with the sample and then, the piece 7 is cooled to a determined temperature with the cooling medium supplied from the cooling medium entrance and 9 through respective connecting tube 10. The cooling medium passed through the cooler 8 is recirculated and is flowed in the header 9 again from the inflow opening 14 and then, the temperature of the cooling medium is automatically controlled at a set up temperature. Hereby, durability of the test piece for the dew condensation and the frost setting can be tested in a short period by setting up the conditions of temperature and humidity. |
