Lab 4 - Date: To: From: Subject: 29April2010 Dr.MarkZohns...

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Date: 29 April 2010 To: Dr. Mark Zohns From: Roman Ferro Subject: Lab Activity 4 Portable Air Compressor A. Diagram     B. V-Belt: 3V C. OD of Driver: 3.125 in OD of Driven: 10 in D. “C” Distance: 13.75 in E. SF = design / given Given = 5 hp Design = 4.72hp(p.7-78) SF = 4.72hp/5hp                  = .94 V-Belt Design: Air Compressor A. Compressor Sheave OD: 21.25in B. Motor Speed: 1160 rpm Power Rating: 15 hp C. Select V-Belt Drive System:  1. Speed Ratio: 1160rpm/ 760 rpm = 1.53 2. SF = 1.1 (p7-43) 3.  Design hp = 15hp*1.1                    = 16.5hp 4. Max OD Driver = (78,000in*rev)/ (pi*min)  x  (min)/(1160rev)  =  21.4in 5. Belt is 5V 6. Driver = 4.4in
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Driven = 6.70 in (p7-58) 7. Hp/Belt: 1100rpm = 5.65hp/belt  and  1200= 6.06hp/belt .6(6.07-5.65) + 5.65 = 5.90hp/belt Also add an additional .1hp (All step 6 from p.7-80) 8. Fully Corrected Hp/Belt
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Lab 4 - Date: To: From: Subject: 29April2010 Dr.MarkZohns...

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