Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Air at T∞2 (oC) is flowing over the roof surface of a corridor with uniform velocity of Vair (km/hr). The length and width of the room are respectively, 8m and 3m. The roof consists of 5-cm concrete brick (kbrick= 38 W/m.K). It is demanded to decrease the rate of heat transfer by more than 50% via using an insulation layer of (kins= 0.03 W/m.K).
Determine
(a) The adequate thickness (x) of the insulation required when the reduction in heat transfer is 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%,95%, and 99%.
(b) Plot a graph showing the trend of the insulation thickness (x) vs. the reduction percent.
(c) Select the insulation thickness that you believe is realistic to use.
Properties of Air: k = 0.03095 W/m K; v = 2.306 x 10-5 m2/s; Pr = 0.7111
Water vapor initially at 3.0 MPa and 300 C is contained within a piston-cylinder assembly. The water is cooled at constant volume until its temperature is 200 C. The water is then condensed isothermally to saturated liquid. For the water as the syste..
Determine the magnitudes of the force R and couple M exerted by the nut and bolt on the loaded bracket at O to maintain equilibrium.
the acceleration of gravity g as a function of elevation z above sea level is given by g 32.17 - 3.32x10-6 z where g
A radiograph was taken of the longitudinal weld seam in a 30 inch OD * 0.625 inch wall tickness pipe which reportedly was manufactured to API5L * 52 specifications. After examining the radiograph on the light box in m-302, characterize the fusion def..
a 3 kg piece of steel is removed from an oven at 700c and placed a water bath.the final temperature of the water is 80c
a solid shaft for a power generator is produced from aluminium plus 1 copper alloy. the shaft makes one revolution per
a. consider a general water splitting system water-in h2- out o2- out. draw a schematic of this system idntifying all
oxygen at 100 kpa 27degc is compressed to 1 mpa in an adiabatic compressor whose isentropic efficiency is 0.80.
an office is occupied by 30 persons who each produce 200 btuh 58w of sensible heat and 0.25 lbh 0.1kgh of moisture. the
an unotched rotating circular rod is subjected to a fluctuating bending load that causes the bending stress to vary
The atomic radii of a divalent cation and a monovalent anion are 0.77 nm and 0.136 nm, respectively. Calculate the force of attraction between these two ions at their equilibrium interionic separation.
solar energy is used to warm a large collector plate. this energy in turn is transferred as heat to a fluid in a heat
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd