EXPERIMENTAL-STUDY ON A SEPARATE TYPE THERMOSIPHON

The passages of vapor flow and the returning liquid flow, are perfectl y partitioned in a separate thermosyphon. Therefore the flooding limit can be eliminated, and practicability based on its construction is hi ghly evaluated. In the present work, a container tube made of heat res isting glass, in which an electric heater is inserted, is selected as the heating section of the experimental equipment. Distilled water is used as the working fluid. The influence of the heater type, the diame ter of evaporating section and the liquid fill charge on the heat tran sfer performance have been studied. The larger heat transfer coefficie nt is achieved in the case of the U type heater, the larger tube diame ter and the less liquid fill charge of the evaporating section. The us eful correlation equations of the heat transfer coefficient in the eva porator have been derived.