Patent ID: 8939825
Filing Date: 2015-01-27
Classification: F24F,Y02B,Y10S

Abstract:
1. A vapor mitigation system comprising: at least one vacuum pipe constructed and arranged to collect vapors from a sub slab soil environment beneath a building and to vent the vapors; a contaminate sensor configured to determine a concentration of a contaminant within the vapors collected within the at least one vacuum pipe; a blower coupled to the at least one vacuum pipe, the blower constructed and arranged to create a vacuum in the sub slab soil environment relative to ambient pressure within the building; a sub slab soil gas sensor configured to determine a concentration of the contaminant within the sub slab soil environment; a fresh air inlet pipe that provides outside dilution air to the sub slab soil environment; a valve that dynamically limits a flow of outside dilution air to the sub slab soil environment through the fresh air inlet pipe based on the determined concentration of the contaminant within the vacuum pipe; and a controller in communication with the blower, the contaminant sensor, the sub slab soil gas sensor, and the valve, the controller being configured to: i) dynamically control a level of power supplied to the blower, wherein the controller adjusts the level of power supplied to the blower in response to one or more environmental measurements; and ii) dynamically control the valve to limit the flow of outside dilution air to the sub slab soil environment based on the concentration of the contaminant in the vacuum pipe, wherein the dynamic control of the valve comprises, responsive to the contaminant sensor determining that the concentration of the contaminant within the vacuum pipe exceeds a predetermined threshold level, providing a signal to temporarily open the valve to permit the flow of outside dilution air to the sub slab soil environment.