Abstract: A method of operating a metal hydride reactor system includes connecting thermal fluid channels of a first subset of reactors together in series and the gas ports to a first chamber, connecting thermal fluid channels of a second subset of reactors together in series and the gas ports to a second chamber. With each reactor at a different starting hydrogen concentration and substantially equal starting pressure, a first thermal fluid flows through the connected thermal fluid channels of the first subset to cause hydrogen desorption. A similar process occurs with the second subset and a second thermal fluid to cause hydrogen absorption. The method further includes heating a first exchange reactor separate from the first and second subsets to raise a temperature of its metal hydride bed, and cooling a second exchange reactor separate from the first and second subsets to reduce a temperature of its metal hydride bed.

Abstract: An optical sensor calibration apparatus in the form of a wheel clamp. The wheel clamp apparatus is configured to determine a center point of a wheel of a vehicle, and to provide a measurement reference with respect to the center point. The measurement reference may be used to position other apparatuses in an optical sensor calibration system configured to calibrate an optical sensor of the vehicle.