Helium is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kJ/kg occurs during the compression process. Neglecting kinetic and potential energy changes, determine the power input required for a mass flow rate of 90 kg/min. (The constant pressure specific heat of helium is ?? = 5.1926 ??/??∙?.)

Helium is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kJ/kg occurs during the compression process. Neglecting kinetic and potential energy changes, determine the power input required for a mass flow rate of 90 kg/min. (The constant pressure specific heat of helium is ?? = 5.1926 ??/??∙?.)

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

Problem 7.2.18P: Repeat the previous problem using sx= 12 MPa.

See similar textbooks

Similar questions

Repeat the previous problem using sx= 12 MPa.
m = 18kg and L = 1.28 m
Equation 10.76 is : C =a0M+ a1 K
An oil well has the following specifications; • Tubing diameter = 2.875” • Tubing roughness = 0.0254 mm • Flow rate = 600 bbl/d • Average reservoir pressure is 4230 psig and Pb is 46335 • Well Depth = 133000 ft 1- Calculate Pwf at 1000, 3000 and 4500 psi. 2- Calculate Pwf at tubing ID 3”, 4” and 5”. Plot Pwf vs Q and determine optimum production rate for both cases Fluid properties GOR 1930 scf/stb Gas Sg is 0.74 Oil API 42 WOR is 0.1 Reservoir temperature 175 F
Equation 6.16: εT = ln(li / l0)
Fundamental Problem
120hp electric motor with 1180rpm propel the 15,000lbs to 55mph using a series of gearbox’s/transmissions and consumer available automotive drivetrain parts? And what kind of output shaft diameter would be optimal?
A cap plate at the bottom of the brace distributes the load P = 660 kN to four flange plates (thickness, tf = 22.5 mm each) through a pin (diameter, dp = 55 mm) to two gusset plates (thickness, tg = 34 mm).[FS = 1.5 , σu = 250 MPa, τu = 400 MPa] Determine the shear stress in the pin? The answer in MPa Determine the bearing stresses in the gusset plates? In MPa Determine the bearing stresses in the flange plates? In MPa Determine the maximum allowable load P that can be applied to this connection if the required factor of safety is FS and theultimate normal and shear stresses in the plates are llimited toσu and τu, respectively?
4kN/m uniform spring load h = 2b allowable normal stress 12MPa h(min) = ?
Calculate the stress in the circumferential section of boiler steam drum 2.15 m in diameter and 45 mm thick, when the working pressure is 30 x 105 Pa
Bernoulli Problem
ANSWER ASAAAAP PLS