A circular tube of diameter D = 0.2 mm and length L = 100 mm imposes a
Question:
A circular tube of diameter D = 0.2 mm and length L = 100 mm imposes a constant heat flux of q" = 20 X 103 W/m2 on a fluid with a mass flow rate of m = 0.1 g/s. For an inlet temperature of Tm,i = 29°C, determine the tube wall temperature at x = L for pure water. Evaluate fluid properties at T = 300 K. For the same conditions, determine the tube wall temperature at x = L for the nanofluid of Example 2.2.
Example 2.2
Transcribed Image Text:
The bulk thermal conductivity of a nanofluid containing uniformly dispersed, noncontacting spherical nanoparticles may be approximated by [kp +2kbf +24(kp-Kot) kp +2kbf - (kpkbf). Kbf where is the volume fraction of the nanoparticles, and kfs Kp, and knf are the thermal con- ductivities of the base fluid, particle, and nanofluid, respectively. Likewise, the dynamic viscosity may be approximated as [20] Mat Mr (1+2.5p) Determine the values of Knis Pais Cpnis Mnts and anf for a mixture of water and Al₂O3 nanoparticles at a temperature of T = 300 K and a particle volume fraction of p = 0.05. The thermophysical properties of the particle are k, = 36.0 W/m. K. pp = 3970 kg/m³, and Cpp = 0.765 kJ/kg-K.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 50% (6 reviews)
The steam tables gives the properties of pure water at 300 K that is the proper...View the full answer
Answered By
Enock Oduor
I am a chemist by profession, i coach high school students with their homework, i also do more research during my free time, i attend educational and science fair seminars where i meet students and do some projects.
0.00
0 Reviews
10+ Question Solved
Related Book For
Fundamentals Of Heat And Mass Transfer
ISBN: 9780470501979
7th Edition
Authors: Theodore L. Bergman, Adrienne S. Lavine, Frank P. Incropera, David P. DeWitt
Question Posted:
Students also viewed these Physics questions
-
A circular tube of aluminum is subjected to torsion by torques T applied at the ends (see figure). The bar is 24 in. long, and the inside and outside diameters are 1.25 in. and 1.75 in.,...
-
Mass leaves an open system with a mass flow rate of c*m, where c is a constant and m is the system mass. If the mass of the system at t = 0 is m0, derive an expression for the mass of the system at...
-
Water falls over a dam of height h with a mass flow rate of R, in units of kg/s. (a) Show that the power available from the water is P = Rgh where g is the free-fall acceleration. (b) Each...
-
Sheridan Inc. is a retailer operating in British Columbia. Sheridan uses the perpetual inventory system. All sales returns from customers result in the goods being returned to inventory: the...
-
Count Clothing Company manufactures two types of raincoats Regular and Stain Resistant. Information related to both products is presented in the following table. Determine the ending inventory value...
-
Lumine Company is considering purchasing new equipment for $350,000. The equipment has a 5-year useful life, and depreciation would be $70,000 (assuming straight-line depreciation and zero salvage...
-
La Salle Exploration Company reported these figures for 2008 and 2007: Compute rate of return on total assets and rate of return on common stockholders' equity for 2008. Do these rates of return...
-
Suppose that during 2013, the market for Stanmore?s special-purpose machines grew by 3%. In Exercise 12- 22, Stanmore Corporation makes a special- purpose machine, D4H, used in the textile industry....
-
1.) The following transactions are available from Lean Products Inc. a company that produced three output, leather, suede and dog chews: Produced and sold 200 units of leather, 100 units of sued, and...
-
Mountain Maples is a mail-order nursery dedicated to growing, selling, and shipping beautiful Japanese Maple trees. Located on a ridge-top in Mendocino County, Northern California, Mountain Maples...
-
Consider pressurized liquid water flowing at m = 0.1 kg/s in a circular tube of diameter D = 0.1 m and length L = 6m. (a) If the water enters at T m,i = 500 K and the surface temperature of the tube...
-
NaK (45%/55%), which is an alloy of sodium and potassium is used to cool fast neutron nuclear reactors. The NaK flows at a rate of m = 1 kg/s through a D = 50-mmdiameter tube that has a surface...
-
Every year, the Office of Management and Budget publishes historical tables describing the composition of federal receipts and outlays. Navigate to https://www.whitehouse.gov/omb/historical-tables/...
-
What is positioning within marketing? Compare the importance of positioning in business-to-business markets Provide an example Compare the importance of positioning in consumer markets. Provide an...
-
A) The inflation rate in UK is currently a double digit which the country has not experienced in many decades. The Central Bank is very concerned with the current inflation rate, and it is noticed...
-
- How often do you check your e-mail? 1 In general, what kinds of information do you receive via e-mail? - How often do you receive letters? - In general, what kinds of messages do these letters...
-
OA beam of negligible mass is shown in the given diagram. If a force of 55 N acts at a point 0.45 m away from the hinge and making an angle at 68. What is the magnitude and direction of the torque?...
-
The purpose of this activity is to identify and present how the brand uses different social media platforms to communicate its messages. ISocial Media Platforms (TikTok) Analysis (Value offered,...
-
(a) What is the dimension of the vector space of 2 2 symmetric matrices? (b) Of skew-symmetric matrices? (c) Generalize to 3 3 case. (d) What about n n matrices?
-
D Which of the following is considered part of the Controlling activity of managerial accounting? O Choosing to purchase raw materials from one supplier versus another O Choosing the allocation base...
-
It is observed that a 230-mm-diameter pan of water at 23C has a mass loss rate of 1.5 X 10-5 kg/s when the ambient air is dry and at 23C. (a) Determine the convection mass transfer coefficient for...
-
The rate at which water is lost because of evaporation from the surface of a body of water may be determined by measuring the surface recession rate. Consider a slimmer day for which the temperature...
-
Photosynthesis, as it occurs in the leaves of a green plant, involves transport of carbon dioxide (C02) from the atmosphere to the chloroplasts of the leaves and the rate of photosynthesis may be...
-
find T(625). I Given the recurrence relation T(n)=7T (n/5)+ 10n for n > 1 T (1)=1 Answer: (please write your answer here, add required space if needed)
-
Given a string length of 1.00 0.01 m and a period of 2.00 0.10, what is the uncertainty in gravity? No need to include units, but give them as m/s^2.
-
Overall, property taxes constitute a small piece of the macroeconomic pie in industrialized countries, but they are an important source of revenue for local governments. To what extent do local...
Study smarter with the SolutionInn App