To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 45 W/m-K) has an inside diameter of D = 150 mm and wall thickness t,= 20 mm while the outer steel pipe has an inside diameter of D,2 = 250 mm and wall thickness f, = 1,. Determine the maximum allowable crude oil temperature to ensure the polyurethane foam insulation (k, = 0.0425 W/m K) between the two pipes does not exceed its maximum service temperature of Tuax = 70°C. The ocean water is at 7o = -5°C and provides an external convection heat transfer coefficient of , = 500 Wim-K. The comvection coefficient associated with the flowing crude oil is h, = 450 W/m?-K. (2) It is proposed to enhance the performance of the pipe-in-pipe device by replacing a thin (t.- 10 mm) section of polyurethane located at the outside of the inner pipe with an aerogel insulation material (k, = 0.012 Wim-K). Determine the maximum allowable crude oil temperature to ensure maximum polyurethane temperatures are below Tman = 70°C. Physical Properties Mathematical Functions Determine the maximum crude oil temperature if no aerogel is used, in °C. Determine the maximum crude oll temperature if aerogel is used, in C. °C Determine the conduction resistance of the polyurethane per unit length when aerogel is used, in m-K/W. m-K/W
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 45 W/m-K) has an inside diameter of D = 150 mm and wall thickness t,= 20 mm while the outer steel pipe has an inside diameter of D,2 = 250 mm and wall thickness f, = 1,. Determine the maximum allowable crude oil temperature to ensure the polyurethane foam insulation (k, = 0.0425 W/m K) between the two pipes does not exceed its maximum service temperature of Tuax = 70°C. The ocean water is at 7o = -5°C and provides an external convection heat transfer coefficient of , = 500 Wim-K. The comvection coefficient associated with the flowing crude oil is h, = 450 W/m?-K. (2) It is proposed to enhance the performance of the pipe-in-pipe device by replacing a thin (t.- 10 mm) section of polyurethane located at the outside of the inner pipe with an aerogel insulation material (k, = 0.012 Wim-K). Determine the maximum allowable crude oil temperature to ensure maximum polyurethane temperatures are below Tman = 70°C. Physical Properties Mathematical Functions Determine the maximum crude oil temperature if no aerogel is used, in °C. Determine the maximum crude oll temperature if aerogel is used, in C. °C Determine the conduction resistance of the polyurethane per unit length when aerogel is used, in m-K/W. m-K/W
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Concept explainers
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
Question
Answer correctly and quickly as possible please. Please help me with my last three questions, I do not have any ask an expert left. Please.
Transcribed Image Text:To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from
a production field.
(1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The
inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 45 W/m-K) has an
inside diameter of Du = 150 mm and wall thickness t; = 20 mm while the outer steel pipe has an inside diameter of
Di2 = 250 mm and wall thickness I, = 1,. Determine the maximum allowable crude oil temperature to ensure the
polyurethane foam insulation (kp = 0.0425 W/m-K) between the two pipes does not exceed its maximum service
temperature of Tp.max = 70°C. The ocean water is at T = -5°C and provides an external convection heat transfer
coefficient of , = 500 W/m?-K. The comvection coefficient associated with the flowing crude oil is h = 450 W/m?-K.
(2) It is proposed to enhance the performance of the pipe-in-pipe device by replacing a thin (f. = 10 mm) section of
polyurethane located at the outside of the inner pipe with an aerogel insulation material (k, = 0.012 W/m-K). Determine
the maximum allowable crude oil temperature to ensure maximum polyurethane temperatures are below Tmax =
70°C.
Physical Properties Mathematical Functions
Determine the maximum crude oil temperature if no aerogel is used, in °C.
T.
i
Determine the maximum crude oil temperature if aerogel is used, in °C.
i
°C
Determine the conduction resistance of the polyurethane per unit length when aerogel is used, in m-K/W.
R' tcond.p.ae =
m-K/W
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY