Engineering, 12.07.2019 21:20 juan237
Afruit drying system consists of a fan followed by a heat exchanger. air at 20°c enters the fan, which supplies 200 kg/s while consuming 90 kw of power (i. e. doing work on the air at a rate of 90 kw). the air exits the heat exchanger at 75°c. the heat is supplied by steam, which enters as saturated vapor and exits as saturated liquid at 500 kpa. determine: 2. a. the temperature of air after the fan, in oc b. the rate of heat transfer from the steam to the air, in kw c. the steam mass flow rate, in kg/s
Answers: 2
Engineering, 04.07.2019 18:10, lowkeyqueenk
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:20, cristykianpour
Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?
Answers: 2
Engineering, 06.07.2019 02:30, josediaz1124
Around steel bar, made from material with a yield stress of 750mpa, is loaded so that it has stresses co locations of maximum normal stress and maximum shear stress. use maximum shear stress and maximum distortion energy theories to calculate the safety factors for initial yielding failures.
Answers: 3
Afruit drying system consists of a fan followed by a heat exchanger. air at 20°c enters the fan, whi...
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