What is the value of the minimum wire temperature

Assignment Help Mechanical Engineering
Reference no: EM13709752

A copper wire of diameter D = 200 um and a total length 2L = 200 mm is stretched between two large substrates, each of which is at temperature Tb = 100 C. Air at temperature T = 20C is in cross flow over the wire, providing a convection heat transfer coefficient of h = 500 W/m^2. K

a) At what x location does the minimum wire temperature exist? What is the value of the temperature gradient dT/dx, at this location?

b) What is the convective heat loss from the wire?

 

c) What is the value of the minimum wire temperature?

Reference no: EM13709752

Questions Cloud

What horizontal force is required to start the box moving : A 755 n box rests on a floor with a coefficient of kinetic friction of 0.600 and a coefficient of static friction of 0.800. What horizontal force is required to start the box moving
Air standard dual cycle has a temperature and pressure : An air standard dual cycle has a temperature and pressure at the beginning of compression of 60 F and 14 psi respectively. The specific heat addition to the cycle is 800 Btu/lbm. After the end of the constant volume part of the heat addition process ..
How far apart are the two stars : Through an excruciatingly-expensive telescope, you study two stars. Star A is 17 light years (ly) from you, and Star B is 23 light years (ly) from you. How far apart are the two stars
Determine what is the magnitude of the charge on each : The electric field midway between two equal but opposite point charges is 713N/C, and the distance between the charges is 17.7cm. What is the magnitude of the charge on each
What is the value of the minimum wire temperature : A copper wire of diameter D = 200 um and a total length 2L = 200 mm is stretched between two large substrates, each of which is at temperature Tb = 100 C. Air at temperature T = 20C is in cross flow over the wire, providing a convection heat transfer..
Estimate what was the initial speed given to the rock : The Height of a cliff relative to the ocean below is 57 m. Someone kicks a rock horizontally off of the cliff and hears the sound 4.62s later. What was the initial speed given to the rock
Calculate the required mass flow rate of the liquid water : We want to produce 20 kg/s of saturated water vapor by mixing steam at 350oC with liquid water at 20oC. The adiabatic mixing process occurs at a constant pressure of 10 MPa. During the mixing process, a stirring mechanism does work on the mixture at ..
What is the magnitude of the friction force on the cart : A 20 kg cart is at rest when begins to push the cart. The cart accelerates for 5 s and a person then the person stops pushing. What is the magnitude of the friction force on the cart
Evaluate the positives and negatives of the business plan : Evaluate the positives and negatives of the Business plan - Individual Case Study response on any suitable business Plan

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Convection heat transfer coefficient of the liquid ammonia

Air in an ideal Diesel cycle is compressed from 4L to .25L, and then it expands during the constant pressure heat addition process to 0.50L. Under cold air conditions, how much is the thermal efficiency of this cycle?

  Determine the velocity of the bird

A bird flying at a constant speed at an altitude 100 m is being tracked by a person located directly below the line of flight. If this angle is decreasing at 0.02 rad/s when the angle between the horizon line and the line of site is 45 degrees.

  Determine a the rate of the heat transfer to the water b

hot exhaust gases are used to heat water at 100kpa and 15 degree c to produce saturated water vapor at 200 degree c

  An otto cycle engine has an initial air pressure and

an otto cycle engine has an initial air pressure and temperature of 14.7 psia and 60deg f respectively. 750 btu of heat

  What is the stagnation pressure on the body

A body moves through standard air at 200 m/s. What is the stagnation pressure on the body? Assume (a) compressible flow and (b) incompressible flow.

  Determine the back work ratio and the thermal efficiency of

consider an ideal gas-turbine cycle with two stages of compression and two stages of expansion. the pressure ratio

  What is the equation for the range of an aircraft moving

what is the equation for the range of an aircraft moving at constant equivalent speed? normally the range is given by

  Whats the maximum acceleration of the car from a standing

a front-wheel-drive car has mass of 680 kg 4 roadwheels of diameter 530 mm wheelbase 2.70 m length 4.22 m and width

  Determine the stress in the wires

a 1.5 ton crate is hoisted by three steel wires. each wire is 1/4 in. in diameter and each carries one-third of the load. determine the stress in the wires.

  A 50-mg railroad car moving with a velocity of 3 kmh is to

a 50-mg railroad car moving with a velocity of 3 kmh is to be coupled to a 30-mg cae which is at rest determinea the

  Determine the minimum mass flow rate kgs of the water so

a liquid sodium flowing a 100 kgs enters a heat exchanger at 450 c and exits at 350 c. the specific heat of sodium is

  Write an appraisal of mathcad including a comparison

write an appraisal of mathcad including a comparison with mathlab. describe another feature of mathcad, giving examples of how it can be used.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd