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

Key words used in road under special conditions, Keywords used in appropria...

Keywords used in appropriate technology: Hill Roads : Roads in hilly and mountainous terrain. Landslides : The slippage of mass of hill face. Retaining Walls : Str

Nature of bending stress, According to the explanation, why reverse will ha...

According to the explanation, why reverse will happen in the case of cantilevers? ( that is, tensile stresses will be induced in upper layers and compressive stresses will be induc

Determine the elements of the vdafs version 2.0, Determine the Elements of ...

Determine the Elements of the VDAFS version 2.0 Elements of the VDAFS version 2.0 are shown in Table. Curves and surfaces are described with the help of points, set of points

Plate clutch warpage-clutch slipping, Plate clutch warpage: Place plate cl...

Plate clutch warpage: Place plate clutch on surface plate and check for warpage. Ensure that0.20 mm feeler gauge does not slide freely.

Carbon monoxide-general safety tips , Carbon Monoxide:  If the engine has ...

Carbon Monoxide:  If the engine has to be started make sure the area is well ventilated. Never start the engine in an enclosed area without using the exhaust duct, since exhaust g

Disc clutch friction warpage-clutch jerking, Disc clutch friction warpage: ...

Disc clutch friction warpage: Place the disc clutch friction on the surface plate and check for warpage.

Evaluate the volumetric efficiency of the engine, (a) Describe the volumetr...

(a) Describe the volumetric efficiency for an I. C. Engine. What is the basic effect of volumetric efficiency on: (i) Specific fuel consumption, (ii) engine power. (b) A p

Explain hard or fixed automation, Explain Hard or Fixed Automation Mech...

Explain Hard or Fixed Automation Mechanical controls consist of numbers of mechanism that create the required relative motion to complete an activity. These mechanisms include:

Laser beam material processing, LASER BEAM MATERIAL PROCESSING   Lig...

LASER BEAM MATERIAL PROCESSING   Light Amplification of Stimulated Emission of Radiation (LASER) is generated when a lasing medium is excited by a source of energy. Gases li

Incompletely constrained motion-kinematic chain, Incompletely Constrained M...

Incompletely Constrained Motion: While a connection among the elements, building a pair is such that the constrained motion is not done by itself, but by some other means. Such a

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