Abstract: The distribution apparatus is provided with a receptacle to which at least one supply line and at least one discharge line for a two-phase mixture are connected. A level which separates the liquid phase from the gas phase forms in the receptacle and may vary between a very low level and a very high level. The horizontal dimension of the orifice cross-section of the discharge line, as considered over its vertical extend from the lowest level to the highest level, is either as great as on the lowest level or decreases upwardly from the lowest level. The distribution of the two phases of the mixture in the discharge line is substantially always uniform despite substantial changes in level.

Abstract: The phase distribution tank is provided with a partition which separates an inlet chamber from an outlet chamber. The partition has a gas phase passage at the upper end and liquid phase passages at the lower end. The discharge conduit for the liquid phase is disposed so that the liquid level in the outlet chamber is within the plane of the orifice of the discharge conduit so that both gas and liquid may discharge.

Abstract: A water outlet pipe leading to a feed water tank is connected to a separator disposed downstream of an evaporator. A heat exchanger and a first control valve are disposed in the water outlet pipe, the valve being influenced by the level in the separator 20. In the heat exchanger heat is transmitted from the water flowing out of the separator to the feed water flowing to the heating surfaces of the vapor or steam generator. Between the heat exchanger and the first control valve, a bypass pipe branches from the water outlet pipe and contains a second control valve which is also influenced by the level in the separator. The bypass pipe leads into a condenser. A considerable proportion of the water leaving the separator is discharged via the bypass pipe to the condenser as a result of the pipe branching off upstream of the first control valve.