Abstract: Systems and methods are provided for vacuum spray drying. In one example, a method for spray drying includes estimating an outlet temperature to achieve a minimum drying rate at atmospheric pressure based on a selected liquid feed and a selected liquid to gas ratio, calculating a predicted dryer pressure at which the minimum drying rate can be reached at a reduced outlet temperature, and spray drying the selected liquid feed at the selected liquid to gas ratio, the predicted dryer pressure and the reduced outlet temperature. The reduced outlet temperature is less than a maximum temperature and the predicted dryer pressure includes an approximation for droplet solidification.

Abstract: An accessory for a vehicle cab or trailer for directing air flow relative to a downstream or towed trailer has apertures configured to direct some air to the space between the vehicle cab or trailer and the downstream trailer.

Abstract: A grille bar for a radiator grille of a vehicle includes a grille bar section having a leading profile defining flange portion and a forward or frontal air deflecting surface. The grille bar section also has a rear leg flange portion projecting downwardly from the upper end portion of the leading profile defining flange portion. In addition, the grille bar section has a return flange portion projecting generally rearwardly from the lower end portion of the leading profile defining flange portion. The return flange portion projects preferably rearwardly and upwardly from the lower end portion of the leading profile defining flange portion and extends generally toward the bottom edge of the rear leg flange. The return flange extends in one form to no more than about one-half of the distance between the front of the leading profile defining flange portion and the rear surface of the rear leg.