thermodynamics, Mechanical Engineering

Assignment Help:

Q2 A 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
3 marks



Related Discussions:- thermodynamics

Thin cells, what type of stresses a thin cell is subjected to?

what type of stresses a thin cell is subjected to?

Derive a regression forecasting equation, Derive a regression forecasting e...

Derive a regression forecasting equation: The general manager of a company producing road rollers is convinced that the demand for road rollers is associated to the number of

Motion of this particle, Motion of this particle: A particle of mass m...

Motion of this particle: A particle of mass m is resting on a smooth horizontal plane as illustrated in Figure (a). It is associated to a spring which has a constant of k in f

The ordinate dimension command-autocad, The Ordinate Dimension Command ...

The Ordinate Dimension Command We can use The Ordinate command to annotate co-ordinate points with X or Y values. This might be useful for setting-out on site plans.

What will happen if air filter is not used?, (a) What will happen if air fi...

(a) What will happen if air filter is not used? (b) What are the components of an air filter? (c) What precautions should be followed while cleaning the air filter? (d) What grade

Material engineering, State the four classes of engineering materials 3 (b)...

State the four classes of engineering materials 3 (b) Identify the class which each of the following materials belong to. Present your answer in table form Silicone, concrete, chro

Engineering dynamics, engineering dynamics problems of kinetics of particle...

engineering dynamics problems of kinetics of particle

What are the technical limitations of screw conveyer, What are the Technica...

What are the Technical Limitations of screw conveyer Technical Limitations: ? Turning limitation of this mechanism Actually the Maximum Turning of U-joint is 18° to 2

Write Your Message!

Captcha
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