1.A.5-Discussion:1-why should the supply frequency be maintained constant ?IV cide ?

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Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter18: Application Of Motors

Section: Chapter Questions

Problem 2RQ: Power supply data should include the followinginformation: A. ____________________ B....

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1.A.5-Discussion:
1-why should the supply frequency be maintained constant ?
IV cide ?

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QUESTION 1 a) Referring to Figure 1, power is transmitted from motor by a V-belt drive to pump. Under the following conditions: pulley speed = 4000 rpm, r = 100 mm, ß = 18°, a = 170°, f = 0.20, belt maximum tension = 1300 N, and belt unit mass is 0.178 kg per meter length, evaluate the following: i. ii. III. Larger- pulley Pump V-belt Initial tension in the belt. r-100 mm Pulley rad -170° Belt tensions at the tight and slack sides. Figure 1 Maximum power that can be transmitted. n=4000 rpm Motor
Fourth task:During a visit to a factory, I came across a compressor and a compressed air networkUsed to operate a number of compressed air systems. The following notes were collected:• The compressor is relatively old.• The compressor room was very hot.• The compressor room was relatively close to the compressed air systems• The pressure at the outlet of the compressor was 8 bar.• The pressure in the pneumatic systems reached 7.5 bar.• Compressor on/off cycles every 40-55 seconds.Prepare a short, high-level recommendation note about actions that can be taken immediately, and measurements you might plan to assess potential energy savings opportunities.