Home work 01 A hydraulic pump, with the performance characteristics of Fig. (1), operates at 2000 rpm in a system that requires Q = 20 gpm at p = 1500 psig to the load at one operating condition. Check the volume of oil per revolution delivered by this pump. Compute the required pump power input, the power delivered to the load, and the power dissipated by throttling at this condition. Compare with the power dissipated by using (i) a variable- displacement pump at 3000 psig and (ii) a pump with load sensing that operates at 100 psi above the load requirement. 4000 (280) Pump displacement: 5.9 in.rev (97 mL/rev -Overall efficiency ---Valumetric efficiency Speed: 1500 2000 2500 1pm 3000 L (210) 85 2000 (140) 1000 (70) 85 88 86 90- 180 F (80-C) 92- 83 Viscosity 9 cSt 97-- (U/min) (100) (140) (180) 1220) (260) 0 (0) 0 10 20 30 40 50 60 70 BO Volume flow rate, gom Figure (1) GIVEN: Hydraulic pump, with performance characteristics of Fig. (1), operating at 2000 rpm. FIND: System requires Q = 20 gpm at p = 1500 psig. (a) The volume of oil per revolution delivered by this pump. (b) The required pump power input. (c) The power delivered to the load. (d) The power dissipated by throttling at this condition. (e) The power dissipated using: (i) a variable-displacement pump at 3000 psig, and (ii) a pump with load sensing that operates at 100 psi above the load pressure requirement.
Home work 01 A hydraulic pump, with the performance characteristics of Fig. (1), operates at 2000 rpm in a system that requires Q = 20 gpm at p = 1500 psig to the load at one operating condition. Check the volume of oil per revolution delivered by this pump. Compute the required pump power input, the power delivered to the load, and the power dissipated by throttling at this condition. Compare with the power dissipated by using (i) a variable- displacement pump at 3000 psig and (ii) a pump with load sensing that operates at 100 psi above the load requirement. 4000 (280) Pump displacement: 5.9 in.rev (97 mL/rev -Overall efficiency ---Valumetric efficiency Speed: 1500 2000 2500 1pm 3000 L (210) 85 2000 (140) 1000 (70) 85 88 86 90- 180 F (80-C) 92- 83 Viscosity 9 cSt 97-- (U/min) (100) (140) (180) 1220) (260) 0 (0) 0 10 20 30 40 50 60 70 BO Volume flow rate, gom Figure (1) GIVEN: Hydraulic pump, with performance characteristics of Fig. (1), operating at 2000 rpm. FIND: System requires Q = 20 gpm at p = 1500 psig. (a) The volume of oil per revolution delivered by this pump. (b) The required pump power input. (c) The power delivered to the load. (d) The power dissipated by throttling at this condition. (e) The power dissipated using: (i) a variable-displacement pump at 3000 psig, and (ii) a pump with load sensing that operates at 100 psi above the load pressure requirement.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Home work
01
A hydraulic pump, with the performance characteristics of Fig. (1), operates at 2000 rpm
in a system that requires Q = 20 gpm at p = 1500 psig to the load at one operating
condition. Check the volume of oil per revolution delivered by this pump. Compute the
required pump power input, the power delivered to the load, and the power dissipated by
throttling at this condition. Compare with the power dissipated by using (i) a variable-
displacement pump at 3000 psig and (ii) a pump with load sensing that operates at 100 psi
above the load requirement.
4000
(280)
Pump displacement: 5.9 in.rev (97 mL/rev
-Overall efficiency
---Valumetric efficiency
Speed: 1500 2000 2500 1pm
3000 L
(210)
85
2000
(140)
1000
(70)
85
88
86
90-
180 F (80-C) 92-
83
Viscosity 9 cSt 97--
(U/min) (100) (140) (180) 1220) (260)
0
(0) 0
10
20 30 40 50 60 70 BO
Volume flow rate, gom
Figure (1)
GIVEN: Hydraulic pump, with performance characteristics of Fig. (1), operating at 2000 rpm.
FIND:
System requires Q = 20 gpm at p = 1500 psig.
(a) The volume of oil per revolution delivered by this pump.
(b) The required pump power input.
(c) The power delivered to the load.
(d) The power dissipated by throttling at this condition.
(e) The power dissipated using:
(i) a variable-displacement pump at 3000 psig, and
(ii) a pump with load sensing that operates at 100 psi above the load pressure requirement.
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