A
heat pipe with a glass shell is composed of a glass shell, a heat-conducting
working fluid, and the like. Its glass shell
heat pipe is fully sealed by a
glass tube head at one end, and then connected to a full
glass tube cavity that is exhausted and filled with a heat-conducting
working fluid tailpipe after being closed by a
glass tube head at the other end. The heat-conducting working medium tailpipe is evacuated, filled with heat-conducting working medium, and then the glass is welded and sealed to form an all-glass circular tubular container. The heat-conducting working medium filled in the
heat pipe of the glass shell has the characteristics of large
vaporization enthalpy, good
thermal conductivity and stable physical and chemical properties. The heat-conducting working medium is either water, an
aqueous solution, or a liquid organic substance; the filling amount of the heat-conducting working medium in the heat
pipe of the glass shell: the heat-conducting working medium corresponding to the saturated heat-conducting working medium vapor volume of the glass-shell heat
pipe under the maximum rated
working temperature and pressure steam quality. The heat-conducting working medium steam above the maximum rated
working temperature and pressure is
superheated steam, and the relationship between its corresponding
temperature and pressure follows Charles' law in gas experiments.