3. A 15% magnesium chloride solution is flowing through a 5-nom sch 40 commercial steel pipeat a rate of 325,000 lbm/h. The average temperature of the magnesium chloride solution as it flowsthrough the pipe is 10°F. Determine the convective heat transfer coefficient inside the pipe.

Answered: Image /qna-images/answer/da6ad5e3-ad0c-4a83-8338-88dc8e8be8e9.jpg

Answered: 3. A 15% magnesium chloride solution is…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.53P

See similar textbooks

Similar questions

A shell-and-tube heat exchanger is used to cool compressed liquid methanol from 176 °F to 104 °F. The methanol flows on the shell side of the exchanger. The coolant is water that rises in temperature from 50 °F to 86 °F and flows within the tubes at a rate of 68.9 kg s-1. Finding the appropriate thermophysical data and applying the proper equations, you are required to do the following:
A shell-and-tube heat exchanger is used to cool compressed liquid methanol from 176 °F to 104 °F. The methanol flows on the shell side of the exchanger. The coolant is water that rises in temperature from 50 °F to 86 °F and flows within the tubes at a rate of 68.9 kg s1. Finding the appropriate thermophysical data and applying the proper equations, you are required to do the following: (a) Calculate i) methanol mass flow rate in the exchanger, ii) methanol volumetric flowrate at the inlet of the exchanger. (b) i) For the counter-current flow of the fluids calculate the log temperature difference, ii) explain the purpose of calculating this difference, iii) explain, quantitatively, why is the counter-current flow in heat exchangers preferred to co-current flow. mean
Water flows at the rate of 65kg/min through a double pipe counter flow HX. Water is heated from 50deg C to 75deg C by an oil flowing through the tube. the specific heat of oil is 1.78kJ/kg-K. The oil enters at 115 degC and leaves at 70degC. The overall heat transfer coefficient is 400W/m2-K. Calculate the rate of heat transfer and the required number of tubes with OD=30mm and L=4m
You are designing a piping system to facilitate the transfer of water from one industrialprocess to the next. You need the water to condense from saturated vapor to saturatedliquid at a constant 1000 kPa as it flows through the piping system. The pipe is to be madeof plain carbon steel with thermal conductivity ? = 60 W m-K⁄ and inner and outer radii?? = 5 cm and ?? = 7 cm, respectively. The thermodynamic property table at the end of thisproblem will be helpful throughout your analysis.a) If the convection coefficient between the steam and inner wall of the pipe is “verylarge”, what is the temperature of the inner pipe wall along its entire length?(Hint: Isobaric phase change is also iso___?)b) The fluid surrounding the pipe has temperature ?∞ = 30°C and the convectioncoefficient from the pipe to this fluid is ℎ = 100 W/m2⋅K. What is the heat transferrate out of the pipe, per unit meter of pipe? You may neglect radiation effects. Usea thermal resistance network in your analysis.c) The…
1. Water flows at the rate of 0.5 kg/s in a 2.5-cm-diameter tube having a length of 3 m. A constant heat flux is imposed at the tube wall so that the tube wall temperature is 40◦C higher than the water temperature. Calculate the heat transfer and estimate the temperature rise in the water. The water is pressurized so that boiling cannot occur.
Pinch temperature at hot stream is 70C, while at cold stream is 60C
2
In a concentric-pipe heat exchanger, one of the fluids is a condensing vapour and theother is the coolant. Sketch the variation in fluid temperatures of two fluids as theyflow through the heat exchanger. Indicate clearly the inlet and outlet of the coolantand its direction of flow.
3.21 You must cool 78 kg/min of a 60%-by-mass mixture of glycerin in wa- ter from 108°C to 50°C using cooling water available at 7°C. Design a one-shell-pass, two-tube-pass heat exchanger if U = 637 W/m²K. Which side should the water flow through? Explain any design decision you make and report the area, TH₂0out and any other relevant features.
Please help. I am not sure how to approach this problem. This problem involves heat transfer and internal flow within a pipe. Thank you.
A heat exchanger is to be designed to condense 8 kg/sec of an organic liquid (tsat=80°C, hfg=600 KJ/kg) with cooling water available at 15°C and at a flow rate of 60 kg/sec. The overall heat transfer coefficient is 480 W/m2 -°C calculate: a) The number of tubes required. The tubes are to be of 25 mm outer diameter, 2 mm thickness and 4.85 m length b) The number of tube passes. The velocity of the cooling water is not to exceed 2 m/sec.
Q2 a) Consider heat transfer to oil flow inside a copper pipe. Is the pipe length affecting the heat transfer rate into the oil? Briefly explain. b) Used engine oil can be recycled by a patented reprocessing system. Suppose that such a system includes a process during which engine oil flows through a 1-cm-internal diameter, 0.02-cm- wall copper tube at the rate of 0.05 kg/s. The oil enters at 35°C and is to be heated to 45°C by atmospheric-pressure steam condensing on the outside, as shown in figure given below. i) ii) iii) Determine the condensing steam temperature at 1 atm, T. [°C]. Calculate the convection heat transfer coefficient for the oil inside the pipe, [W/m'.K]. Calculate the rate of heat transfer rate into the oil, [kW], and, determine the length of the tube required. iv) Condensing steam Ct lam Oil in 35°C Oil out 0.05 kg/s I em 45°C 0.02 cm Copper tube L = ?

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Heat Transfer (Activate Learning wi…

Mechanical Engineering

ISBN:

9781305387102

Author:

Kreith, Frank; Manglik, Raj M.

Publisher:

Cengage Learning