Calculate required area of air to air heat exchange to cool

Assignment Help Civil Engineering
Reference no: EM13324120

Calculate the required area of an air to air heat exchange to cool 20,000 cfm from 1200 F to 400 F. Assume ambient air at 80 F will be heated to 800 F by the exchange. Assume heat losses are 10 % and that the overall heat transfer coefficient is 1.0 Btu/hr-ft^2- °F

Reference no: EM13324120

Questions Cloud

What is the maximum height the blue ball reaches : A blue ball is thrown upward with an initial speed of 21.6 m/s, from a height of 0.9 meters above the ground. 2.6 seconds after the blue ball is thrown, What is the maximum height the blue ball reaches
Calculate the future value if the investment : Find the future value one year from now of a $7,000 investment at a 3 percent annual compound interest rate. Also calculate the future value if the investment is made for two years.
Create an ios chart with the investment alternatives : The WACC is 7.75% with break points at $13 million and a new WACC of 8.12%. A final breakpoint occurs at $25 million boosting the WACC to 9.25%. Your banker has told you that beyond $25 million you will not be extended additional credit.
Explain the reacton at equilibrium : A mixture of SO2 and SO2O2 and SO3 at 1000k contains the gases at the following concentrations [SO2]=5.0e-3 mol/L [O2]=1.9e-3 mol/L and [SO3]=6.9e-3 mol/L is the reacton at equilibrium. If not which way will the reaction proceed to reach equilibri..
Calculate required area of air to air heat exchange to cool : Calculate the required area of an air to air heat exchange to cool 20,000 cfm from 1200 F to 400 F. Assume ambient air at 80 F will be heated to 800 F by the exchange.
Should three hills add a second repairperson each shift : Simulate this proposed maintenance system change over a 15-generator breakdown period. Select the random numbers needed for time between breakdowns from the second-from-the bottom row of Table 14.4 (beginning with the digits 69).
What is your displacement from your initial position : You walk from your house 0.25 miles West to Fred's house, What is your displacement from your initial position
Determine the rotational speed of the rollers : The distance from the center of the plate to the point of contact between the plate and the roller is 12 cm. The radius of the roller is 0.5 cm. Assuming no slip between the wheels and the plate, determine the rotational speed of the rollers.
Explain why must all the lines in the hydrogen spectrum : Why must all the lines in the hydrogen spectrum between 2500 A and 7000 A belong to the Balmer series

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine what is ph of the solution at equilibrium

Calcium sulfate (CaSO4, solubility product Ksp=2*10^-5 M^2), is added to initially pure water, such that solid CaSO4 remains at equilibrium. (Assume the sulfate does not participate in reaction other than the solubility product; no HSO4- formed).

  Determine average rate of rainfall incubic feet per second

Rain falls at an average intensity of 0.4 in/h over a 600-acre areafor 3 days. a) Determine the 3-days volume of rainfall in acre-ftand ft3,b) determine the average rate of rainfall incubic feet per second

  Find the heat gain in j per n and cal per n

Head loss and sunshine striking a pipeline cause the temperature of the water flowing inside to rise by 2 degrees Celsius between two measuring points. Find the heat gain in J/N and cal/N.

  What is the min length for the off-ramp to provide storage

If the average length of a vehicle is 15 ft and the average space between consecutive vehicles waiting to be served is 3 ft, what is the minimum length for the off-ramp to provide storage for all exiting vehicles 80 percent of the time

  Determine the vertical reaction at a on the gate

A gate having the cross section is 4 ft wid and is hinged at C. The gate weighs 18,000 lb, and its mass center is 1.67 ft to the right of the plane BC. Determine the vertical reaction at A on the gate when the water level is 3 ft above the base.

  Determine the critical load of a round wooden dowel

Determine the critical load of a round wooden dowel that is 0.9m long and has a diameter of (a) 10mm (b) 15mm. Use E=12GPa

  Determine how man n of water must be added to the sample

A moist soil sample weighing 22.2 N has a moisture content of 20%. How man N of water must be added to the sample to increase the moisture content to 30%

  What is value of combined detention and interception storage

During a 108 minute long storm, the precipitation rate over a 100 acre area is 1.65 in/hr. The phi index is 0.42 in/hr. The average outflow from the area is 92 cfs during the storm. What is the value of combined detention and interception storages ..

  Find magnitude of the velocity and acceleration of light

The search light is rotating at a constant rate of 4 rad per second. Find the magnitude of the velocity and acceleration of the spot of light on the wall when the search light beam makes a 45 degree angle with the wall.

  How to design for a two-lane road in mountainous terrain

A horizontal curve is to be designed for a two-lane road in mountainous terrain. The following data are known: intersection angle: 50 degrees, tangent length: 400 ft, station of PI: 2000+00, e: .08, fs:.16

  How much tangent distance between the two curves is needed

A 6-lane freeway horiz. alignment has a 1200' C.L. radius going into a tangent and then a reversing 1800' radius. How much tangent distance between the two curves is needed to meet the superelevation runoff requirements

  Determine what is the mass of the object necessary

An object is held in the air 30m above ground and released. Assume the drag force due to air resistance is given by Fd = 1.0Vy. What is the mass of the object necessary so that it reaches ground in 3s

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