User Account

All Pages

Determine the temperature of the electric heater element

Assignment Help Mechanical Engineering
Reference no: EM13766

Q1 Figure shows a scale drawing of the temperature profile through a composite plane wall.

(i) Identify the layer with the largest thermal conductivity,

(ii) Identify the layer that provides the greatest resistance to the flow of heat.

1060_Temperature profile through a composite plane wall.png

Figure: Temperature profile through a composite plane wall

Q2A 3kW electric water heater is a cylindrical element having outside diameter 10mm. The heat transfer between the heater and the surrounding water is 980W/m2K.

Determine the length of the heater if the surface temperature must not exceed 95oC when the water is at 65oC.

The element comprises an electric resistance heater, diameter 2mm in the centre of the 10mm diameter stainless steel tube which has a wall thickness of 1mm. The gap between the resistance heater and the inside of the tube is packed with a ceramic material, Thermal conductivity 2W/mK.

Determine the temperature of the electric heater element. You may assume that the heater element is at uniform temperature and the thermal resistance between the element and the ceramic is negligible. The thermal conductivity of the stainless steel is 16W/mK.

Reference no: EM13766

Questions Cloud

Calculate yield to maturity and bond prices : Calculate yield to maturity (YTM) and bond prices
Theory of interest : Theory of Interest: NPV, IRR, Nominal and Real, Amortization, Sinking Fund, TWRR, DWRR
Compute a shortest superstring : Dynamic programming algorithm to compute a shortest superstring.
Cost-benefit analysis : Create a cost-benefit analysis to evaluate the project
Determine the temperature of the electric heater element : Determine the temperature of the electric heater element and drawing of the temperature profile.
Determine the heat transfer characteristics : To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
Economic integration : Economic integration is the establishment of transnational rules and regulations that enhance economic trade and cooperation among countries.
Data structures for a single algorithm : Data structures for a single algorithm
Calculate the expected value of returns of stock : Calculate the expected value of returns of stock.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Solve for the dynamics of the resulting system

Solve for the dynamics of the resulting system for 20 seconds of real time using midpoint method.

  Find reciprocal lattice of the body-centred cubic structure

What is the minimum energy in the conduction band, and where can it be found in the Brillouin zone?

  Determine the maximum total bending moment

Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.

  Mechanical engineering questions

Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.

  Method of measuring the humidity of the atmosphere

The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.

  Discharge pressure of the compressor

What is the discharge revised discharge pressure of the compressor.

  Create a window in java

Create a window apllication in java

  The Case for Global Accounting Standards

The role of IFRS in both developing and developed capital markets.

  Use of waste heat and renewable heat sources

Energy in the home, personal energy use and home energy efficiency and Efficient use of ‘waste' heat and renewable heat sources

  Wind turbine

Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.

  Write a paper on boyle''s law

Write a paper on Boyle's law and describe Compression and Combustion stroke . Also explain Charles's law and illustrate SI engine and CI engine.

  Determine the heat transfer characteristics

To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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