Consider the encased pipe of Problem 4.29, but now allow for the difference between the mean temperature
Question:
Consider the encased pipe of Problem 4.29, but now allow for the difference between the mean temperature of the fluid, which changes along the pipe length, and that of the pipe.
(a) For the prescribed values of k, D, w, h, and T∞ and a pipe of length L = 100 m, what is the outlet temperature Tm,o of water that enters the pipe at a temperature of Tm,i = 90°C and a flow rate of m = kg/s?
(b) What is the pressure drop of the water and the corresponding pump power requirement?
(c) Subject to the constraint that the width of the duct is fixed at w = 0.30 m, explore the effects of the flow rate and the pipe diameter on the outlet temperature.
Step by Step Answer:
KNOWN Dimensions and thermal conductivity of concrete duct Convection conditions of ambient air Flow rate and inlet temperature of water flow through ...View the full answer
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
Students also viewed these Mechanical Engineering questions
-
Consider the conditions of Problem 3.149, but now allow for a tube wall thickness of 5 mm (inner and outer diameters of 50 and 60 mm), a fin-to-tube thermal contact resistance of 10- 4 m2 K/W, and...
-
Consider the conditions of Problem 7.43, but now allow for radiation exchange between the surface of the heating element ( = 0.8) and the walls of the duct, which form a large enclosure at 27C. (a)...
-
Consider the conditions of Problem 9.19, but now allow for a difference between the inner and outer surface temperatures, Ts,i and Ts,o of the window. For a glass thickness and thermal conductivity...
-
(8) (Non circular cylinder) A solid right (noncircular) cylinder has its base the R in the xy-plane and is bounded above by is 22-y + +5 5 * (x + y) dx dy paraboloid 2= x + y . The cylinder's volume....
-
Economists often speak as if there is a single interest rate when in fact there are many interest rates. What factors explain the differences in these interest rates?
-
Some multicomputers allow running processes to be migrated from one node to another. Is it sufficient to stop a process, freeze its memory image, and just ship that off to a different node? Name two...
-
8.97
-
On April 1, 2011, Bay delivers merchandise to Ram for 200,000 pesos when the spot rate for pesos is 6.0496 pesos. The receivable from Ram is due May 30. Also on April 1, Bay hedges its foreign...
-
Laval produces lamps and home lighting fixtures. Its most popular product is a brushed aluminum desk lamp. This lamp is made from components shaped in the fabricating department and assembled in the...
-
? Dean and Ellen Price are married and have a manufacturing business. They bought a piece of business equipment (7-year personal property) on 4/1/2017 for $50,000. Use half-year convention to...
-
A thick-walled, stainless steel (AISI 316) pipe of inside and outside diameters D; = 20 mm and Do = 40 mm is heated electrically to provide a uniform heat generation rate of q = 10 6 W/m3. The outer...
-
Water flows through a thick-walled tube with an inner diameter of 12 mm and a length of 8 m. The tube is immersed in a well-stirred, hot reaction tank maintained at 85C, and the conduction resistance...
-
Implement a general merge method that can merge any number of sorted subsequences. The method gets an ArrayList with the sorted sequences that should be merged.
-
The combined weight of the load and the platform is 200 lb, with the center of gravity located at G. If a couple moment of M = 900 lb ft is applied to link AB, determine the angular velocity of links...
-
Due In: 06:48:23 Questions Question 1 (4) O Question 2 (8) Question 2 of 2 A company sold $150,000 bonds and set up a sinking fund that was earning 8.5% compounded semi-annually to retire the bonds...
-
Find the point on the graph of f(x) = x which is closest to the point (6, 27). How close is the closest point?
-
Due to a crash at a railroad crossing, an overpass is to be constructed on an existing level highway. the existing highway has a design speed of 50 mi/h. The overpass structure is to be level,...
-
Finding Bone Density Scores. In Exercises 37-40 assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard...
-
15. LO.1 Rennie owns a video game arcade. He buys vintage video games from estates, often at much less than the retail value of the property. He usually installs the vintage video games in a special...
-
A city maintains a solid waste landfill that was 12 percent filled at the end of Year 1 and 26 percent filled at the end of Year 2. During those periods, the government estimated that total closure...
-
Assume that 40% of the light emitted by a 1000 W metal halide lamp (110 000 lumens) illuminates a surface with the area of a 32 ft diameter. a. Determine the average illuminance of the surface in...
-
Determine the phase of the substance at the given state using Appendix B tables a) Water 100C, 500 kPa b) Ammonia -10C, 150 kPa c) R-12 0C, 350 kPa
-
Determine whether water at each of the following states is a compressed liquid, a superheated vapor, or a mixture of saturated liquid and vapor. a. P = 10 MPa, v = 0.003 m3/kg b. 1 MPa, 190C c. 200C,...
-
Give the phase for the following states. Discuss.
-
Lou Barlow, a divisional manager for Sage Company, has an opportunity to manufacture and sell one of two new products for a five - year period. His annual pay raises are determined by his division s...
-
Consider a 5 year debt with a 15% coupon rate paid semi-annually, redeemable at Php1,000 par. The bond is selling at 90%. The flotation cost is Php50 per bind. The firm's tax bracket is 30%.
-
A project will generate annual cash flows of $237,600 for each of the next three years, and a cash flow of $274,800 during the fourth year. The initial cost of the project is $749,600. What is the...
Study smarter with the SolutionInn App