Problem 6.12 A single stage air compressor compresses air through pressure ratio of 9from a pressure of 1 bar. Free air delivery is 3 m'/min. Swept volume and index ofcompression are 15 liters and 1.3 respectively. Determine (i) power required in kW(ii) rotational speed of the compressor in rpm. Neglect clearance.

Answered: Image /qna-images/answer/1bb5373c-54ba-4ad1-b721-89a624e1ffd1.jpg

Answered: Problem 6.12 A single stage air…

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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16. Find the no. of revolutions per minute and motor power in HP? Pump, Volume displaced = 3.4 x 10- 5 m3-rev1, Delivered discharge 37.1 L-min1, p = 85 bar, Volumetric efficiency efficiency = 88.5%. 95.6%, Mechanical %3D
Please provide a complete solution.
Need both part please
4. A conventional hydropower station in a dam impounds 390 ft of fresh water and has a flow of 24,720 cubic feet per second. a. What is the maximum possible amount of power (in MW) that can be developed by a turbine installed at this station? b. Calculate the power specific speed Nóp assuming a synchronous speed of 90 rpm and determine the appropriate turbine type (Pelton, Francis, or Kaplan) for this installation. c. If the turbine efficiency is 92.7%, what is the actual power developed (in MW)?
5.16. For a centrifugal compressor rotating at 2500 rpm, find the compression ratio for the following specifications. T = 300 K; 79 (volumetric flow rate)=1.25 m³/s and t (the thickness of the flow section at the exit) = 0.15 m. = 0.85; r, = 0.55; ra = 0.015; B, 60°,
Problem 7.1 A roots blower is used to deliver air 100kg/min. The pressure ratio through blower is 2 to 1. The conditions of air at suction is 1.013 bar and 50°C. Caculate the power required to drive the blower.
Task 1 The Data: - Clearance volume of 70 cm3, the bore of cylinder is 130 mm, the stroke of compressor is 70 mm, the measured low and high pressures are 120 and 700 kPa, respectively, the volume before and after compression are 900 and 250 cm3, respectively. 1. Determine the volumetric efficiency of a reciprocating compressor 2. Calculate the isothermal and polytropic work of a reciprocating compressor 3. Evaluate the isothermal efficiency
Q4: What the meaning of 1. Static head of Centrifugal Pumps Manometric 2. 3. Total head of Centrifugal Pumps head of Centrifugal Pumps
a. Calculate the mass flow rate in lb/min. b. Calculate the speed at section 2 in ft/min or fpm
8.4 The later stages in an axial flow turbine are reaction-type stages. In one such stage, the degree of reaction is 50%. The mean radius and height of the rotor blades are 3 in. and 1 in., respectively. The speed is 40,000 rpm and the flow coefficient þ=0.24. The rotor exhaust temperature and pressure are 60°F and 14.7 psia, respectively. If V12 = 1100 ft./s, calculate the following: (a) nozzle angle, (b) blade loading coef- ficient, (c) total temperature at the stage inlet and exit, and (d) power. Also, show the process on a T-s diagram. Ans: az=78.13°; ự =1.1; To2=727°R; To3=525.5°R; power=171 hp %3D
9.2. A 1/5 scale model of Kaplan turbine is designed to operate at a head of 25 m. The prototype produces 18.5 MW of power under a head of 49 m when operating at a speed of 250 rpm. Find the speed, discharge and power of the model. Assume the efficiency of the model and prototype is same at a value of 88%.

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