A long pipe carries hot water and loses heat by convection to the surrounding air at Too=16 °C and h=20 W/(m2°C). The pipe has a thermal conductivity of k=1.7 W/(m°C), inner radius of r1=0.2 m and outer radius of r2-0.22 m. Assume that the inner surface temperature of pipe is T1-53°C. If there is no heat generation in the pipe material, calculate the outer surface temperature of the pipe T(r2), in °C, by considering steady one-dimensional heat transfer and constant thermal conductivity.

A long pipe carries hot water and loses heat by convection to the surrounding air at Too=16 °C and h=20 W/(m2°C). The pipe has a thermal conductivity of k=1.7 W/(m°C), inner radius of r1=0.2 m and outer radius of r2-0.22 m. Assume that the inner surface temperature of pipe is T1-53°C. If there is no heat generation in the pipe material, calculate the outer surface temperature of the pipe T(r2), in °C, by considering steady one-dimensional heat transfer and constant thermal conductivity.

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

See similar textbooks

Related questions

Q: 1 kg of steam initially dry saturated at 1.1 MPa expands in a cylinder as per pv1.13 = Constant. The…

A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…

Q: Good Afternoon. I have a question in my homework related Heat Transfer lesson. The following below…

A: To determine the heat transfer process involved in the heating of water in a pan.

Q: This method of heat transfer doesn't require any media for heat to travel. Convection method…

Q: Determine the energy required to convert 3 kg of ice at -10 oC to saturated vapor at 100 oC. The…

A: Given data Mass of ice = 3 kg Temperature of ice = -10°C Specific heat of ice = 2050 J/kgK Specific…

Q: A closed, expandable system like that shown below is operated in an adiabatic manner. First, 15,000…

Q: With reference to a Marine (Ship's) Boiler, describe the methods of heat transfer, Conduction,…

A: Heat Transfer in boiler

Q: On a summer day in Phoenix, Arizona, the inside room temperature is maintained at 68° F while the…

A: Given, TiF = 68 °FToF = 110 °F Here, o and i subscripts represent outdoor and indoor temperatures…

Q: Consider a heat transfer situation. Heat flows from the hot item or area to the cold item or area.…

A: Here situation is given of two objects hot object and cold object. The heat transfer between two…

Q: Fin increase the heat transfer rates by increasing ………………………….

A: Fin increase the heat transfer rates by increasing …………………………. answer the surfce area of the body

Q: A 50-kg box of beef at 8 C having a water content of 72 percent is to be frozen to a temperature of…

A: Assumptions: The beef is at uniform temperatures at the beginning and at the end of the process.…

Q: f I am given two thermodynamic properties of a material as equations with units that are unknown,…

A: There are two thermodynamics properties with unit.

Q: Explain the processes of adiabatic cooling and heating.

A: To explain: The process of adiabatic cooling and heating: Explanation: Adiabatic cooling: The…

Q: What is the differential relation between displacement, velocity and acceleration?

Q: Determine the heat energy required to convert 20 kg of water at 30°C completely to steam at 120°C,…

A: Let's solve the proble step by step as explained in next step.

Q: Steam enters a steady-flow turbine with a mass flow rate of 20 kg/s at 600 C (Celsius), 5 MPa, and a…

Concept explainers

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.

Question

Heat mass transfer

A long pipe carries hot water and loses heat by convection to the surrounding air at Too-16
°C and h=20 W/(m2°C). The pipe has a thermal conductivity of k=1.7 W/(m°C), inner radius
of r1=0.2 m and outer radius of r2=0.22 m. Assume that the inner surface temperature of
pipe is T1=53°C. If there is no heat generation in the pipe material, calculate the outer
surface temperature of the pipe T(r2), in °C, by considering steady one-dimensional heat
transfer and constant thermal conductivity.
h, To
I2

Net movement of mass from one location, usually meaning stream, phase, fraction, or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

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.

Similar questions

THERMODYNAMICS Water enters the tube of a cold plate at 70 degrees fahrenheit with an average velocity of 53 feet per minute and exits at 122 degrees fahrenheit. The tubes have a 0.25 in diameter. Determine the amount of heat created by the electronic devices put on the cold plate assuming the 12 percent of the heat generated is lost from the components to the surroundings through convection and radiation and the remaining 88 percent is removed by the cooling water.
A cylinder which is in a horizontal position contains an unknown noble gas at 42100 Pa and is sealed with a massless piston. The piston is slowly, isobarically moved inward 0.189 m, while 15900 J of heat is removed from the gas. If the piston has a radius of 0.327 m, calculate the change in internal energy AU of the system. AU = J
List and describe three methods of heat transfer. Give an example of each. (1) Method? Example? (2) Method? Example? (3) Method? Example?
Explain what a "heated zone" is, how it operates, and any potential restrictions.
Fur-lined leather boots for: O Scorching places Very wetly place Very oily place O Very cool place.
Define the control volume can involve fixed, moving, real, and imaginary boundaries.
When we take a shower with hot water, once we stop receiving water we experience a greater sensation of cold than if we had showered with cold water. Investigate and make an argument based on the concepts studied in physics (especially temperature and heat) and support your arguments with a development of equations or mathematical relationships that demonstrate your answer.
2. Electrical components often failure due to thermal overload. It follows that thermal analysis of electrical components is critical to their longevity. Consider a silicon chip which is sitting atop a ceramic substrate with 35 mm2 of exposed surface area. Operating at steady state, the chip can pull up to 120 mW of power. The chip surface is cooled by convection from flowing air at 20°C. The heat transfer from the chip to the air is given by Q = hA(T, – T) where h is the thermal convection coefficient, A is the exposed surface area, and Tb and Tr are absolute temperatures of the body and coolant fluid, respectively. h of the flowing air is found to be 250 W/(m2-K). Assuming heat transfer to the substrate is negligible compared to convection, determine: the heat transfer occurring at steady state (W) the temperature at the outer surface of the chip ("C) a. b.
In an experiment to measure the specific heat of material, a student first measured the masses of the following samples as given in Table 1. Table 1: Measurement of Mass Physical quantity measured in (g) Value Mass of Styrofoam 2.4 cup Mass of Styrofoam 62 cup + water Mass of Brass sample 15.3 Mass of Copper sample 62.5 and then recorded the temperatures of the above two samples, in Table 2. Table 2: Measured values of Temperatures Hot termperature ("C ) Sample Equilibrium cold temperature ( C) temperature ("C) Brass 99.8 26.5 24.5 Сopper 99.8 32 26 Answer the following questions using the data given in Table 1 and Table 2. (Please enter the answers with two digits after decimal) (a) Calculation of specific heat capacity of Brass: Calculated Quantities Mass of the water (in Values grams) Change in temperature lof the hot object ( ATobieca) °C) Change in temperature of water (ATwaer) (°C) Calculated specific heat of the object in (cal/g'C) (b) Calculation of the specific heat capacity…
Air at a rate of 1000cfm is cooled from 80⁰Fdb and 70⁰Fwb until it is saturated at 55⁰F. Determine the amount of moisture removed (lb/min), sensible heat removed (BTU/min), total heat removed (BTU/min), and the sensible heat factor.
Define the energy content of a control volume can be changed by mass flow as well as by heat and work interactions.
During phase change process, the magnitudes of the latent heat depend on temperature only O pressure only O heat transfer rate O pressure and temperature