Abstract: The present invention is a sorbent-based atmosphere revitalization (SBAR) system using treatment beds each having a bed housing, primary and secondary moisture adsorbent layers, and a primary carbon dioxide adsorbent layer. Each bed includes a redirecting plenum between moisture adsorbent layers, inlet and outlet ports connected to inlet and outlet valves, respectively, and bypass ports connected to the redirecting plenums. The SBAR system also includes at least one bypass valve connected to the bypass ports. An inlet channel connects inlet valves to an atmosphere source. An outlet channel connects the bypass valve and outlet valves to the atmosphere source. A vacuum channel connects inlet valves, the bypass valve and outlet valves to a vacuum source. In use, one bed treats air from the atmosphere source while another bed undergoes regeneration. During regeneration, the inlet, bypass, and outlet valves sequentially open to the vacuum source, removing accumulated moisture and carbon dioxide.

Abstract: In the preferred and illustrated embodiment of a leak locating system, a pipeline leak locator is disclosed. The locator includes an electronic circuit having temperature sensors attachable to the pipeline and a time and temperature monitor. The system utilizes time and temperature differences to determine the direction and along with the known volume loss can determine the distance of a pipeline leak relative to the locator. The pipeline leak locator further includes a cooling coil for reducing the pipe wall temperature to a predetermined value in the area of the sensors.