Abstract: A vaporization-condensation process using the refrigerant cycle (heat pump) for energy recycling between the vaporization and condensation processes with the refrigerant heat absorption/rejection capacity maximized to minimize installed power by controlling the system operating pressure (absolute) and allowing for the recovery of the condensable liquid vaporized, directly, indirectly, and within the seal liquid of the liquid ring pump if included in the system to; provide the less costly operating system feasible, recover one liquid from another, remove a liquid or liquids from a solid, purify water and, eliminate or minimize gas admission to the environment.