The condensation of vapour from gas-vapour mixtures

Abstract

The accepted methods for the design of condensers to handle gas-vapour mixtures are reviewed and a single verticle tube condenser is described from which data are obtained for the systems chloroform and air, and steam and air. The method of C olburn and H ougen [4] is applied to a run on each of the systems and the calculated area compared with the expected area. The approximate method of C olburn [3] is also applied to the same runs and the area obtained again compared with the expected area. The area required to cool a saturated mixture of chloroform and air from 120·2°F to 94·0°F calculated by the C holburn and H ougen [4] method is found to be in good agreement with the expected area, being within 2% of it. The method applied to the cooling of a saturated mixture of steam and air from 168·3°F to 129·9°F gives an area which also agrees well, being within 5% of that expected. The modification of the C olburn and H ougen [4] method suggested by S mith [10] is found unnecessary in the cases studied. The approximate design procedure proposed by C olburn [3], applied to the same conditions, is found to give an area approximately 40% greater than expected for both systems.