1

Help mee!! Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe...

Question

Help mee!! Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe...
Help mee!!

Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe of 0.1 m inside diameter at a flow rate of 0.2 m/h and at an average temperature of 70 °C. The pipe length is 2.5 m and the inside pipe wall temperature is 60 °C Assume that the pipe thickness is small and the steel heat conductivity is high enough so that the thermal resistance of the pipe wall is negligible. Calculate: (a) The convective heat transfer coefficient on the inside pipe wall; (b) The heat loss from the pipe to the cold air, if the outside ambient temperature is 20 °C and the outside convective heat transfer coefficient is 17 W/(m2K). Assume steady-state conditions.
Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe of 0.1 m inside diameter at a flow rate of 0.2 m/h and at an average temperature of 70 °C. The pipe length is 2.5 m and the inside pipe wall temperature is 60 °C Assume that the pipe thickness is small and the steel heat conductivity is high enough so that the thermal resistance of the pipe wall is negligible. Calculate: (a) The convective heat transfer coefficient on the inside pipe wall; (b) The heat loss from the pipe to the cold air, if the outside ambient temperature is 20 °C and the outside convective heat transfer coefficient is 17 W/(m2K). Assume steady-state conditions.

Answers

DELTA Thsnal Histaru 20 60 in


Similar Solved Questions

1 answers
Determine magnitude and direction
Three charges are fixed to an x, y coordinate system. A charge of +18uC(micro coulombs) is on the y axis at y = +3.0m. A charge of -12uC is at the origin. Last, acharge of +45uC is on the x axis at x= +3.0m. Determine the magnitude and direction of the net electrostatic force on the charge at x = +3...
1 answers
A bond currently sells for $1,050, which gives it a yield to maturity of 6%. Suppose...
A bond currently sells for $1,050, which gives it a yield to maturity of 6%. Suppose that if the yield increase by 25 basis points, the price of the bond falls to $1,025. What is the duration of this bond?...
1 answers
Kenneth Clark is investing $10,500 in a bank CD that pays a 8 percent annual interest....
Kenneth Clark is investing $10,500 in a bank CD that pays a 8 percent annual interest. How much will the CD be worth at the end of five years? (Do not round intermediate calculations and round your final answer to the nearest penny.)...
1 answers
Two identical sound sources are placed on the x-axis, one at x=0, and other at x=40...
Two identical sound sources are placed on the x-axis, one at x=0, and other at x=40 m. They send identical, in-phase sound wave of 3 m wave length out towards each other. Find the positions between, x=15 m and x=21 m where sound should be loudest....
1 answers
8. What is the pH of a solution containing 6 mM acetic acid (Ka of acetic...
8. What is the pH of a solution containing 6 mM acetic acid (Ka of acetic acid is 1.8 x 10) a. -0.77 b. 1.98 d. 2.92 e. 3.49 с. 2.22 9. One of the strongest acids known is called fluorosulfonic acid, HSO3F (pKa= -10). What the pOH of 1M of this acid? a. -0.053 b. О d. 14 е. 14.053 ...
1 answers
It is well documented that a typical washing machine can last anywhere between 5 to 20...
It is well documented that a typical washing machine can last anywhere between 5 to 20 years. Let the life of a washing machine be represented by a lognormal variable, Y = eX where X is normally distributed. In addition, let the mean and standard deviation of the life of a washing machine be 9 and h...
1 answers
Below you are given a partial computer output based on a sample of seven (Z) observations...
Below you are given a partial computer output based on a sample of seven (Z) observations ANOVA df 100 Regression Residual Total 6 288.56 Coefficients 5.000 3.729 p-value 0.0942 0.1643 Standard Error t Stat Intercept 2.425 Variable x 2.290 To test whether the parameter β 1 is significantly diff...
1 answers
What's the difference between ANOVA and multiple regression?
What's the difference between ANOVA and multiple regression?...
1 answers
ABC Inc. must make a decision on its current capacity for next year. Estimated profits (in $000's) based on next year's demand are shown in the table below.
ABC Inc. must make a decision on its current capacity for next year.  Estimated profits (in $000's) based on next year's demand are shown in the table below.                      &nb...
1 answers
375 mg of penicillin was prescribed for an elderly patient with pneumonia. The drug comes in...
375 mg of penicillin was prescribed for an elderly patient with pneumonia. The drug comes in tablets of 500 mg. How many tablets should be given? Label all numbers with its corresponding unit and drug Place zeros in front of decimals (0.1)...
1 answers
Ht=-4.9t2+4.2t this function Luar1118 auuvily 2. Ivivuuiu v Name Date Show all work or no credit...
ht=-4.9t2+4.2t this function Luar1118 auuvily 2. Ivivuuiu v Name Date Show all work or no credit will be given. 1. The height of a ball (in meters) above the ground after seconds is modeled by the following function: A) Find the vertex of the function. B) Explain what each coordinate means in terms ...
1 answers
3.6 Calculate the percentage frequency of failures, reliability, and failure rate for the following set of...
3.6 Calculate the percentage frequency of failures, reliability, and failure rate for the following set of data on failure of a production line, and draw the graphs of these functions in the manner of Figure 3.4. Interval (days) 10–20 20–30 30-40 40-50 50-60 60-70 No. of failures 5 17 17...
1 answers
37- In the diagram below, a 2.0 x 10-6 С charge experiences forces of 3.0 N...
37- In the diagram below, a 2.0 x 10-6 С charge experiences forces of 3.0 N and 8.0 N at its locatio between charges Q and Q2 Qi 2.0 × 10-1 C F-8.0 N Find the magnitude of the net electric field strength at the location of the 2.0x104 ć charge. A. 2.5x10 N/C B. C. D. 2.8×106 N...
1 answers
Can I make a hexagon with 3 right angles?
Can I make a hexagon with 3 right angles?...
1 answers
4. The first derivative of a function f(x) at a point x = xo can be approximated with the four-po...
Solve using MATLAB and provide code please 4. The first derivative of a function f(x) at a point x = xo can be approximated with the four-point central difference formula: dx 12h where h is a small number relative to xo. Write a user-defined function function that calculates the derivative of a mat...
1 answers
7.49 Rank the anions in order of increasing nucleophilicity in acetone: CH,S", CH NH", I, Br",...
7.49 Rank the anions in order of increasing nucleophilicity in acetone: CH,S", CH NH", I, Br", and CH30 7.50 Classify each solvent as protic or aprotic. a. (CH CHOH C. CH CI2 @, NỊCH, b. CH.NO, d. NHA f. HCONH, than thoamide N atom in CH.CONHCH.CH.CH NHCH.?...
1 answers
2. Charge-up response of series RLC circuit. No energy is stored in the 0.1H inductor or...
2. Charge-up response of series RLC circuit. No energy is stored in the 0.1H inductor or the 0.4uF capacitor before the switch in the circuit shown in the figure below is closed. Find S2 Key= A 2800 1. 0.4uF - 3. Discharge response of series RLC circuit. The circuit had been in steady state prior to...
1 answers
I'm stuck on a probability problem, could anyone do me a favor? Many thanks! Let X be a continuous real-valued random variable on a probability space (2,F, P with characteristic function φ, and l...
I'm stuck on a probability problem, could anyone do me a favor? Many thanks! Let X be a continuous real-valued random variable on a probability space (2,F, P with characteristic function φ, and let K > 0, Show that 1/K Hint: use that sinw) -T ifly22 Let X be a continuous real-valued ran...

-- 0.010186--