Abstract: A system includes a pressure exchanger (PX) configured to receive a first fluid via a first inlet and a second fluid via a second inlet. The PX is to exchange pressure between the first fluid and the second fluid and provide the first fluid at a first outlet and the second fluid at a second outlet. The system further includes a first sensor to provide first sensor data associated with the first fluid prior to the first fluid entering the first inlet and a second sensor to provide second sensor data associated with the second fluid prior to the second fluid entering the second inlet. The system further includes a controller to receive user input and cause a first adjustment of the flowrate of the first fluid into the first inlet and cause a second adjustment of the flowrate of the second fluid into the second inlet.

Abstract: The car seat pillow is in the form of an elongated, generally cylindrically shaped pillow casing filled with pillow stuffing. Each end face of the pillow is provided with an attaching element to adjustably attach the pillow to the support frame of a car seat. Each attaching element may include a flexible strap for releasable engagement with a corresponding shoulder strap guide formed on the sides of a car seat.

Abstract: The car seat pillow is in the form of an elongated, generally cylindrically shaped pillow casing filled with pillow stuffing. Each end face of the pillow is provided with an attaching element to adjustably attach the pillow to the support frame of a car seat. In one preferred form of the invention, each attaching element include a female coupling member for cooperative engagement with a corresponding male coupling member on one of the ends of an elongated tether that is securable to the back of the support frame of a contemporary forward facing car seat or booster seat.