Question

roblem 4.80 5 of 6 Roview Air flows at 0.05 kg/s through insulated circular duct such that the (gauge) pressure immediately downstream of a blower is 10 kPa. You may neglect the impact of elevation change your analysis Part A If the pressure at a downstream location within the duct is measured as 8 kPa, estimate the change in the temperature of the air that would be expected between upstream and downstream locations. Express your answer to three significant figures. AEd tvec AT Submit Request Answer Part B If a blower was used to raise the pressure in the duct described in Part A by 2 kPa at a single location, estimate t ..... e power required to drivo tho blower if it has an efficiency of 88 % . Express your answer to three significant figures and include appropriate units.

Answer 1

ANSWER PART A values Standard O12 46 P at lo kpa Ph kim3 kpa ea O099 1-005 loss (Elosh E nergy P gained heat en evgy E gain) m Consenvation energy lors Egain CpoT -P m e DT Yep)-P Ph

l-005 0l246 O.0991 0.469 c PART-B additional Powesi walts PR here AP arfa -2000 Pa kg Isei g1m 3 O-1346 O 94 2000) fowen euired O.lay6 x0.q4 853.8 Walts