POTENTIAL WORK INCREASE APPLYING PASCAL’S PRINCIPLE USING BOURDON TUBES Using the experimental data presented on pages 12.219 and 12.220, the relationship illustrated below of two Bourdon tubes presents the case of Workoutput ˃ Workinput. (.3492 in-lb output work potential generated by .127 in-lb input work potential) This conclusion is based on: 1) Pascal’s Principle being valid and either 2) The volume does not change in Bourdon tubes when being pressurized or 3) The volume displaced by the plunger into Bourdon tube (BT2) is greater than the volume change in BT2 caused by pressurization. NOTE: Of several R & D departments contacted of manufacturers using bourdon tubes, most stated they had no data on if the volume in a Bourdon tube changes on pressurization. Two manufacturers stated that they believe the volume does not change. Extensive research concludes that data on Bourdon tube volume change is likely unavailable in the industry. A volume change compensating feature in a current patent may compensate for volume change while maintaining the fluidic advancement presented at the top of this page. 45 PSIG FLUID DEPRESSURIZED 3.23 mm (.127in) FORCE 1lb PRESSURIZED WORK POTENTIAL = .127 in-lb 45 PSIG BT1 GAUGE 1/60 IN² PLUNGER FACE AREA ONE POUND OF FORCE ON PLUNGER BOURDON TUBE 1 (BT1) BOURDON TUBE 2 (BT2) FLUID 4 mm = .18 in 60 PSIG DEPRESSURIZE D FORCE 1.94 lb PRESSURIZED GAUGE WORK POTENTIAL = .3492 in-lb BT2 CONCLUSION: .3492 in-lb ˃ .127 in-lb; therefore Woutput ˃ Winput 12.225 30 15 45 0 60 30 15 45 0 60
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