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2. Carbon dioxide is contained in a piston-cylinder assembl...

2. Carbon dioxide is contained in a piston-cylinder assembly with an initial pressure and temperature of 8 lb//in² and 100° F, respectively. The carbon dioxide has a mass of 0.05 lb. The carbon dioxide is expanded isothermally to a final volume of 1 ft³. Model the carbon dioxide as ...

1. Ammonia passes through a throttling valve operatin...

1. Ammonia passes through a throttling valve operating at steady state. The flow at the valve inlet has a pressure of 60 lbf/in² and a temperature of 80° F. The flow at the valve outlet has a pressure of 20 lbf/in². Determine the temperature at the valve outlet in &d...

Question 1 A tank contains 5 m3 of hydrogen at 400K is evac...

Question 1 A tank contains 5 m3 of hydrogen at 400K is evacuated from atmospheric pressure to a final pressure of 2.5 kPa. Determine (a) The mass of hydrogen remains in the tank. (b) The mass of hydrogen pumped out. (c) Pressure of the remaining hydrogen if the temperature is reduced to 10°...

1 (a) A steam power plant shown schematically in Fig. Q1 op...

1 (a) A steam power plant shown schematically in Fig. Q1 operates on an ideal Rankine cycle with boiler and condenser pressure of 80 and 0.5 bar, respectively. Steam the rate of 18 kg/s leaves the oiler/superheater unit, which has an efficiency 53% atemperature At the condenser inlet the steam ...

A refrigerator works in large part by allowing a medium to c...

A refrigerator works in large part by allowing a medium to circulate continuously in a system with a compressor and an expansion valve. Between the compressor and the expansion valve (in the flow direction), the system has high pressure and the refrigerant condenses. The pressure between the expansi...

Some equations of state can be used to predict the volume of...

Some equations of state can be used to predict the volume of both gases and saturated liquids. The Redlich-Kwong equation is such an equation. It can be written in polynomial form as: ππ3− 2−2+12 12=0 where ππ ( ) ππ=0.42748π
π
2ππππ5/2ππππ...

1.You are designing a freezer that requires the production R...

1.You are designing a freezer that requires the production R-134a with T = -30ºC and a quality of 40%. The feed temperature, to the throttle, is 30ºC. If the diameter of the tube exiting the throttle is 1 cm, calculate the following:a.Upstream diameter [for Δ(v2) = 0].b.Required upst...

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