Heat and mass transfer, engineering, Other Engineering

Assignment Help:
1. Air at 1 atm, 90F, and 8 ft/s enters a thin-walled tube of 4-in diameter. The tube surface temperature is maintained at 60F. Air exits the tube at 70F. Determine the length of the tube required to accomplish this process. Work in English units!

2. A box 15-cm by 50-cm at a constant surface temperature of 35C is exposed to ambient air from all sides except the base (50cm by 50 cm in a horizontal plane). The ambient air is 1 atm, 25C. Estimate the natural convection heat loss from the top of the surface as well as the side surface

3. Air at 1 atm, 25C and 8 m/s is to be heated by an in-line tube-bank with 3 rows in the flow direction and 4 tubes in each row. The outside diameter of the tubes is 0.012m with a length of 0.2 m. The surface temperature of the tubes is maintained at 350 C. Taking the air properties at 35C, calculate:

a. The air temperature and heat transfer

b. The air pressure drop across the tube-bank


Related Discussions:- Heat and mass transfer, engineering

Reliability design , RELIABILITY DESIGN Scientifically allocate the...

RELIABILITY DESIGN Scientifically allocate the reliability for the target product and subsystems, all the way down to their component and parts. Conduct failure modes, e

Engine speed indicators, Engine speed indicators: All engines have thei...

Engine speed indicators: All engines have their rotational speed (R.P.M.) indicated. On a twin or triple-spool engine, the high pressure assembly speed is always indicated; in

Range - Aircraft performance, Safe Operating Range The SOR is the max ...

Safe Operating Range The SOR is the max distance between airfields which the aircraft can fly with full allowance for headwind, diversion, stacking. • Distance flown in climb

Double acting propellers, Double acting propellers: This type of propel...

Double acting propellers: This type of propeller is normally fitted to larger engine and, because of engine requirements, is more complicated than the propellers fitted to smal

Electronic project help, i have a project to do a remote control car by wir...

i have a project to do a remote control car by wired and the car should go foreword and backward by increasing the speed from the joystick(1) and the sound joystick control the dir

Thrust reversal - aircraft design, Thrust reversal: Thrust reversal is ...

Thrust reversal: Thrust reversal is a means of reducing the landing run of an aircraft without excessive use of wheel brakes or the use of braking parachutes.  On a propeller d

Climbing drum peel test , Climbing Drum Peel Test The CDP test works by a...

Climbing Drum Peel Test The CDP test works by attaching a free end of a face sheet of a sandwich panel to a drum which then rolls across the panel, peeling off the face sheet. 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