Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Calculate the second-law efficiency of the coflowing heat exchanger in Problem 7.113 with an ambient at 17?C.
Problem 7.113
A coflowing (same direction) heat exchanger, shown in Fig. P7.113, has one line with 0.5 kg/s oxygen at 17?C, 200 kPa entering, and the other line has 0.6 kg/s nitrogen at 150 kPa, 500 K entering. The heat exchanger is very long, so the two flows exit at the same temperature. Use constant heat capacities and find the exit temperature and the total rate of entropy generation.
A point on a thin plate is subjected to the two successive states of stress shown. Determine the resultant state of stress represented on the element oriented as shown on the right.
The chandelier is supported by die four wires shown. Determine the force in each wire. Because of symmetry, the force in all four wires can be assumed to have the same value.
A sample of saturated soil was consolidated under an all-around pressure of 60 lb/in2. The axial stress was then increased without permitting drainage. The sample failed when the axial deviator stress reached 50 lb/in2.
Verify that the displacement response of the system - single-degree-of-freedom model below is subject to the pulse loading
At a point in a material, a resultant stress of 151 MN/m^2 acts in a direction making angles of 52 deg, 79 deg, and 40.13 deg with the coordinate axes, x,y and z respectively
An electronic device is available that will reduce year'slabor cost by $10,000. the equipment is expected to last for eightyears. If labor is cost increase at an average rate of 7% per yearand the interest rate is 12% per year
An emission control system for a new car costs $750 and reduces NOx emissions from 0.4 g/mile to 0.18 g/mile. Assume the car is driven 10000 miles per year, and the life of the emissions control system is 11 years
A 50-kg crate is pulled by the constant force P at an angle of 30 deg off the x axis- the crate starts from rest and achieves a speed of 10 m/s in 5 s. the coefficient of kinetic friction between the crate and ground is 0.2.
Assume the settling tank behaves like an ideal sedimentation tank, what percentage of removal should be expected for particles with a settling velocity of 0.002 m/sec
Liquid water is to be pumped by a 10-kW pump from 100 kPa at a rate 5 kg/s. What is the highest pressure the water can reach at the exit? Neglect the kinetic and potential energy change of the water. Take the specific volume of water as constant at 0..
Data obtained from aerial photography showed six vehicles on a 600 ft long section of road. Traffic data collected at the same time indicated an average time headway of 4 sec. Determine the (a) density on the highway (b) flow on the road (c) space me..
A confined aquifer has a specific storage of 2.5 * 10^-6 /m . The porosity is .20 and the water compressibility is 5 * 10-10/Pa.For the aquifer skeleton compressibility you just calculated, what would the aquifer specific storage be if porosity were ..
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd