Air flow through along duct of constant area at (0.15Kg/sec), a short section of the duct is cooled. The rate of heat loss in this section is (15 KJ/sec) from the air. The properties of the inlet and exit are shown in fig. below. Find: The duct cross-section area (A), change in enthalpy (dh), internal energy (du), drive and find change in entropy (ds). 1 Q 2 p1= 188Kpa T1=440 K р2=213 Кра V1-210 m/sec T2=351 K

Elements Of Electromagnetics
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Q5A:
Air flow through along duct of constant area at (0.15Kg/sec), a short section of the duct
is cooled. The rate of heat loss in this section is (15 KJ/sec) from the air. The
properties of the inlet and the exit are shown in fig. below.
Find: The duct cross-section area (A), change in enthalpy (dh), internal energy (du),
drive and find change in entropy (ds).
1
2
p1=188Kpa
T1=440 K
V1-210 m/sec
p2=213кра
T2=351 K
B. Determine the pressu. of 5 kg hydrogen contained in a vessel of 2 m3 capaci
Transcribed Image Text:Q5A: Air flow through along duct of constant area at (0.15Kg/sec), a short section of the duct is cooled. The rate of heat loss in this section is (15 KJ/sec) from the air. The properties of the inlet and the exit are shown in fig. below. Find: The duct cross-section area (A), change in enthalpy (dh), internal energy (du), drive and find change in entropy (ds). 1 2 p1=188Kpa T1=440 K V1-210 m/sec p2=213кра T2=351 K B. Determine the pressu. of 5 kg hydrogen contained in a vessel of 2 m3 capaci
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