Reconsider the air hockey table of Problem 3.162, but with inclusion of minor losses. The table is 3 ft by 6 ft in area, with 1/16-in-diameter holes spaced every inch in a rectangular grid (2592 holes total). The required jet speed from each hole is 50 ft/s. Your job is to select an appropriate blower to meet the requirements. Hint: Assume that the air is stagnant in the manifold under the table surface, and assume sharp-edge inlets at each hole.
(a) Estimate the pressure rise (in lbf/in2) required of the blower.
(b) Compare your answer to the previous calculation in Prob. 3.162, where minor losses were ignored. Are minor losses significant?

Transcribed Image Text:

P2 Pa jet Pi