Abstract: A dryer operable to separate a portion of an entrained liquid from a flow of gas includes a pressure vessel to contain the flow of gas and entrained liquid within the pressure vessel. A precooler/reheater is positioned within the pressure vessel to cool the flow of gas and the entrained liquid and an evaporator is positioned within the pressure vessel to cool the flow of gas and the entrained liquid from the precooler/reheater. A separator receives the flow of gas and the entrained liquid from the evaporator and is operable to separate the flow of gas and the entrained liquid into a flow of substantially dry gas and a liquid. The liquid collects in the bottom of the pressure vessel. A drain valve is movable between an open position and a closed position in response to the quantity of liquid within the bottom of the pressure vessel.

Abstract: A water electrolysis system includes a high-pressure water electrolysis apparatus and a gas-liquid separation device. The gas-liquid separation device includes a block member which includes a gas-liquid separation opening and a water-level detection opening. The gas-liquid separation opening and the water-level detection opening extend substantially vertically and includes respective bottom portions which integrally communicate with a discharge pipe. The discharge pipe is disposed at a lower side portion of the block member. The water-level detection opening includes a top portion and a top water-level detection section. The block member further includes an inlet hole in which the hydrogen is introduced from the high-pressure water electrolysis device. The inlet hole is disposed at an upper side portion of the block member. The inlet hole is positioned above the top water-level detection section of the water-level detection opening.

Abstract: A gas/liquid phase separator includes a fluid inlet, a vapor outlet, a liquid outlet, and first and second valves disposed in fluid communication with the liquid outlet. Both valves are controllable in response to a fluid level in the gas/liquid phase separator. Both valves are further disposed in parallel fluid communication with each other. A method of controlling a liquid level in the phase separator includes sensing an amount of liquid in the phase separator, sensing a system pressure, and selectively opening a valve disposed in fluid communication with the phase separator to drain the liquid.