Calculate the heat supplied from the outer surface, Mechanical Engineering

Assignment Help:

Consider laminar flow in a circular tubewith a fully developed velocity profile.Let the heat be added at a constant rate along the tube from  x+ =0  to  x+ =0.10 . Thereafter ,let the tube surface be adiabatic.Calculate and plot the tube surface temperature as a function of  x+.

Consider a concentric circular-tube annulus ,with outer diameter 2.5cm and inner diameter 1.25cm,in which the air is flowing under fully developed ,constant heat -rate conditions. Heat is supplied to the inner tube ,and the outer tube is externally insulated . The radiation emissivity of both tube surfaces is 0.8 .The mixed mean temperature of air at a particular point in question is 260 degrees centigrade. The inner- tube surface temperature at this point is 300 degC. What is total heat flux from the inner tube surface at this point? What is the outer tube surface temperature at this point ? What percentage of the heat supplied to the inner tube is transfered directly to the air, and what percentage indirectly from the outer surface ?

The reynolds number is sufficiently low that the flow is laminar . Assume that the air is transparent to the thermal radiation.


Related Discussions:- Calculate the heat supplied from the outer surface

Plate clutch movement on center clutch-clutch jerking, Plate clutch movemen...

Plate clutch movement on center clutch : Place plate clutch on centre clutch as shown in the picture and move the plate clutch up and down, while moving the plate clutch in the ce

Mandatory checks during the first six services , MANDATORY CHECKS DURING TH...

MANDATORY CHECKS DURING THE FIRST SIX SERVICES Various steps in servicing of motorcycle are given below in a tabular form. 2.3.1 First Service and Second Ser

Construction of steam turbine , Construction of steam turbine : CONST...

Construction of steam turbine : CONSTRUCTIO N DETAILS: 1 . Casing: It is made out of cast steel. The casing has rotor inside it. 2 .  Rotor: It carries blades o

Show the corrosion mechanisms, Q. Show the corrosion mechanisms? The fo...

Q. Show the corrosion mechanisms? The following corrosion mechanisms are likely to happen in the Oil Treating Unit: Under Deposit Corrosion and MIC Since cooling e

Types of stresses, Types of stresses: In general stress is divided in ...

Types of stresses: In general stress is divided in to three group as: various types of stresses may be classified as: 1. Simple or direct stress (Tension, Compressi

Show modular structures layout, Q. Show Modular Structures layout? Outs...

Q. Show Modular Structures layout? Outside dimensions and weight of truckable modules shall not exceed limits specified, Modular Structures in GS-904-0103. Minimum head clearan

Determine the required feed rate of seawater, Seawater is boiled in a 5 lit...

Seawater is boiled in a 5 liter kettle to produce drinking water.  In class we solved the steady-state version of this problem.  Here you are asked to consider the transient period

Friction, Friction: When a body moves or tends to move over the other ...

Friction: When a body moves or tends to move over the other body, a force opposing the motion develops at the contact surfaces. This force that opposes the movement or the ten

Carnot cycle, matlab programme for carnot cycle

matlab programme for carnot cycle

Explain sand and moulding sands, Q. Explain Sand and moulding sands? Sa...

Q. Explain Sand and moulding sands? Sand according to the amount of clayey matter they contain, the moulding sands are classified as: • Silica sand: Up to 20% clay. •

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