Changes in kinetic and potential energies is zero

Assignment Help Mechanical Engineering
Reference no: EM13711483

Ten cubic feet of air is cooled at a constant pressure of 80 psi. The initial temperature is 180 0F and the final temperature is 100 0F. Assume air is an ideal gas, Cp = 0.241 Btu/lb 0R and Cv = 0.173 Btu/lb 0R and R = 1545 lbf/lbmol 0R, M = 28.97 lb/lbmol. The changes in kinetic and potential energies is zero. Determine:

a) total mass of the air in lb

b) the work in btu

c) chage in internal energy in btu

d) heat transfer

e) change in enthalpy

Reference no: EM13711483

Questions Cloud

Converted at constant pressure to saturated steam : Liquid water is fed to a boiler at 24ºC and 10 bar is converted at constant pressure to saturated steam. Use the steam tables to calculate H (kJ/kg) for this process, and then calculate the heat input required to produce 15,000 m3/h of steam at the e..
Nozzle to keep it from moving horizontally backwards : A fireman is using a 10-cm inside-diameter fire hose is trying extinguish a fire. He is aiming the hose at 45° with respect to the horizontal and the water lands 30 m from the fire fighter. On the end of the fire hose is a nozzle. The inside diamete..
What is the discharge velocity : Air enters an adiabatic nozzle at 3 atm pressure and 100 F and emerges at 1 atm and 30 F. The inlet velocity is negligible. What is the discharge velocity?
What is the amplitude of the force transmitted to building : Consider a model of a building whose base moves as a result of an earthquake. The building can be modeled as a single-degree-of-freedom spring-mass system where the building mass is lumped on top of two beams used to model the walls of the building.
Changes in kinetic and potential energies is zero : Ten cubic feet of air is cooled at a constant pressure of 80 psi. The initial temperature is 180 0F and the final temperature is 100 0F. Assume air is an ideal gas, Cp = 0.241 Btu/lb 0R and Cv = 0.173 Btu/lb 0R and R = 1545 lbf/lbmol 0R, M = 28.97 lb..
Solid glass-polymer reinforced composite rod : Solid glass-polymer reinforced composite rod (diameter = 100 mm) is simultaneously torqued clockwise (T = 1,000 Nm) and given a tensile load (P = 0). Determine shear strain. Determine extensional strains in n and t directions.
Calculate the maximum shear stress for each stress element : A cantilever beam with a 1 in diameter is loaded at the tip with a transverse force of 1000 lb. Figure 2.1 below shows the beam configuration and cross-section with points A at the top, point B at the center and point C at the midpoint between A and ..
Heat exchanger tubes have to be shorter txceed : In a Modified Rankine Cycle used in a power plant in Wichita, KS, a Shell and Heat Exchanger needs to be installed. Water from the turbine at 90 C is cooled to 80 C in a shell-tube HX using 150 kg/s of raw water from Power Plant Lake.
Compute the natural frequency : Consider a model of a building whose base moves as a result of an earthquake. The building can be modeled as a single-degree-of-freedom spring-mass system where the building mass is lumped on top of two beams used to model the walls of the building. ..

Reviews

Write a Review

 

Mechanical Engineering Questions & Answers

  Find out weld pressure adjustments

what would be the formula to find out weld pressure adjustments when atm inside the tube is changed?

  Engineering materials i need you to write a report about

i need you to write a report about heat treatment of steel. i will attach the report format which you need to stick

  The coefficent of restitution for the collision is er04 if

two cars simultaneosly enter an intersection with 35 degrees between their headings. the car on the left weighs 5000

  At the beginning of the compression process of an

at the beginning of the compression process of an air-standard otto cycle p1 14.7 lbin2 and t1 530degr. the maximum

  Calculate a the coal firing rate in lbhr b the fuel gas

a 500 mw coal-fired power plant is burning coal with a heating value of 12000 btulb. the coal contains 2.0 sulfur. the

  The turbine isentropic efficiency is 075 calculate the

a geothermal power plant utilizes steam produced by natural means underground. steam wells arc drilled to tap this

  Heat is transferred from a high temperature object to the

liquid water is contained in an insulated rigid container. an electrical resistance heater is inside the device is

  Determine a the thermal efficiency of the cycle b the mass

steam is the working fluid in an ideal reheat rankine cycle. steam enters the first-stage turbine at 8.0 mpa 480

  What is the effect of increasing the boiler pressure in a

what is the effect of increasing the boiler pressure in a steam power plant modeled as an ideal rankine cycle with

  What is the static sensitivity estimate the total

a nominally linear electrical output force measuring device has the manufacturer specifications listed below. the

  When the particle is 6 m to the left of the origin it has a

a particle moving on the x axis has an acceleration always directed to the origin. the magnitude of the acceleration is

  Calculate the work done when a gas expands from 350 kpa and

during some actual expansion and compression processes in piston-cylinder devices the gases have been observed to

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd