Vapor mitigation system, vapor mitigation controller and methods of controlling vapors

摘要

A vapor mitigation system includes at least one vacuum pipe configured to collect vapors beneath a floor of a building, and a blower coupled to the at least one vacuum pipe. The blower is configured to create a vacuum under the floor of the building. The vapor mitigation system includes a controller configured to control a speed of the blower. The controller adjusts the speed of the blower in response to a level of vacuum created under the floor of the building.

主权项

1. A vapor mitigation system comprising:
at least one vacuum pipe configured to collect vapors from a sub slab 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 configured to create a vacuum in the sub slab environment relative to ambient pressure within the building; a fresh air inlet pipe that provides outside air to the sub slab environment; a valve that dynamically limits a flow of outside air to the sub slab environment through the fresh air inlet pipe; and a controller in communication with the blower, the contaminant sensor, and the valve, the controller being configured to dynamically control the valve to limit the flow of outside dilution air to the sub slab 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 environment.