Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Mechanical Engineering Expert

Engineering


Home >> Mechanical Engineering

An air heater may be fabricated by coiling Nichrome wire and passing air in cross flow over the wire. Consider a heater fabricated from wire of diameter 1mm, electrical resistivity 10-6 O m, k=25 W/m K and e=0.2. The heater is designed to deliver air at a temperature of 50°C under flow conditions that provide a convective coefficient of 250 W/m2K for the wire. The temperature of the housing that encloses the wire and through which the air flows is 50°C if the maximum allowable temperature of the wire is 1200°C, what is the maximum allowable electric current I? If the maximum available voltage if 110 V, what is the corresponding length of the wire that may be used in the heater and the power rating of the heater? Assume negligible temperature variations within the wire.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M91906486

Have any Question?


Related Questions in Mechanical Engineering

Life cycle assessmentfor your chosen service eg white board

LIFE CYCLE ASSESSMENT For your chosen service (e.g. white board markers), identify two alternatives of getting the service (e.g. brand A, brand B). Choose the most environmentally friendly option by conducting life cycle ...

Fluid mechanics assignment - viscous flow in pipesq1 as

Fluid Mechanics Assignment - Viscous Flow in Pipes Q1. As shown in the figure below, water "bubbles up" 3 in. above the exit of the vertical pipe attached to three horizontal pipe segments. The total length of the 0.75-i ...

Problem on shaft -assuming no frictional losses a torque of

Problem on Shaft - Assuming no frictional losses, a torque of T = 750lb·in is applied through the shaft of gear F in order to drive the roller chain at point B at a constant speed. The chain sprocket has a pitch diameter ...

Alocate ten minutes for the presentationuse audio visual

Allocate ten minutes for the presentation Use audio / visual / technological supports / aids where appropriate Use a minimum of 3 properly referenced articles. THEMES PRESENTATION TOPIC MEMORY Discuss the three learning ...

The aim of the project is to demonstrate certain aspects of

The aim of the project is to demonstrate certain aspects of engineering materials in different applications. The projects will be assessed on the basis of a written Research Report. The report should clearly show what yo ...

Questions -q1 a qualitative estimate of the effect of a

Questions - Q1. A qualitative estimate of the effect of a wind-tunnel contraction (Figure) on turbulent motion can be obtained by assuming that the angular momentum of eddies does not change through the contraction. Let ...

Assignment - machine learning for signal processingproblem

Assignment - Machine Learning for Signal Processing Problem 1: Instantaneous Source Separation 1. As you might have noticed from my long hair, I've got a rock spirit. However, for this homework I dabbled to compose a pie ...

Question - truss structureconsider the three membered

Question - Truss Structure Consider the three membered planar truss structure shown in the figure below. All members of the truss have identical square cross-sectional area (A) of 25 mm x 25 mm, and Youngs Modulus (E) = ...

Heat transfer and combustionyou will need graph paper a

HEAT TRANSFER AND COMBUSTION You will need graph paper, a calculator, a copy of Appendix 1 from lesson HTC - 4 - 2 and access to steam tables to answer this TMA. 1. A fuel gas consists of 75% butane (C 4 H 10 ), 10% prop ...

The aim of the project is to demonstrate certain aspects of

The aim of the project is to demonstrate certain aspects of engineering materials in different applications. The projects will be assessed on the basis of a written Research Report. The report should clearly show what yo ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As

Follow Us

© Copyright 2013-14 mywordsolution.com All rights reserved