1. Ammonia with a specific volume of 1.94 m³ /kg flows at a rate of 3.3 kg/s through a tube with a cross sectional area of 0.01m². Determine the average velocity across the tube cross section. Answer: 640.2 m/s

Elements Of Electromagnetics
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Thermodynamics

First Law of Thermodynamics Conservation Mass
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1. Ammonia with a specific volume of 1.94 m³ /kg flows at a rate of 3.3 kg/s through a
tube with a cross sectional area of 0.01m². Determine the average velocity across the
tube cross section.
Answer: 640.2 m/s
2. Oil, with a specific gravity of 0.9, enters a pump with a volumetric flow rate of 0.1
m³ /min through a 10 cm pipe at 20 °C. the diameter of the exit pipe is 7 cm and the flow
is isothermal.
a. the mass flow rate in kg/s.
b. the inlet velocity in m/s; and
c. the exit velocity, in m/s
Ans: m = 1.5 kg/s; Vin = 0.2122 m/s; Vout = 0.433 m/s
Transcribed Image Text:First Law of Thermodynamics Conservation Mass Show solution step by step. 1. Ammonia with a specific volume of 1.94 m³ /kg flows at a rate of 3.3 kg/s through a tube with a cross sectional area of 0.01m². Determine the average velocity across the tube cross section. Answer: 640.2 m/s 2. Oil, with a specific gravity of 0.9, enters a pump with a volumetric flow rate of 0.1 m³ /min through a 10 cm pipe at 20 °C. the diameter of the exit pipe is 7 cm and the flow is isothermal. a. the mass flow rate in kg/s. b. the inlet velocity in m/s; and c. the exit velocity, in m/s Ans: m = 1.5 kg/s; Vin = 0.2122 m/s; Vout = 0.433 m/s
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