Ammonia at 20 C with a quality of 50% and a total mass of 2 kg is in a rigid tank with an outlet valve at the bottom. How much saturated liquid can be removed from the tank in an isothermal process until there remains no more liquid?

Question

Engineering

Reese Frank

16 December, 20:06

Ammonia at 20 C with a quality of 50% and a total mass of 2 kg is in a rigid tank with an outlet valve at the bottom. How much saturated liquid can be removed from the tank in an isothermal process until there remains no more liquid?

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Answers (1)

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Kaylin Burgess · Answer 1

16.38L

Explanation:

Through laboratory tests, thermodynamic tables were developed, these allow to know all the thermodynamic properties of a substance (entropy, enthalpy, pressure, specific volume, internal energy etc ...)

through prior knowledge of two other properties.

Quality is defined as the ratio between the amount of steam and liquid when a fluid is in a state of saturation, this means that since the quality is 50%, 1kg is liquid and 1kg is steam.

then to solve this problem we find the specific volume for ammonia in a saturated liquid state at 20C, and multiply it by mass (1kg)

v (amonia at 20C) = 0.001638m^3/kg

m = (0.01638) (1) = 0.01638m^3=16.38L