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R-134a at 500 kPa and 60C flows steadily into a mixing chamber, where it combines with another...

Question:

R-134a at 500 kPa and 60°C flows steadily into a mixing chamber, where it combines with another stream of R-134a at 500 kPa with a quality of 30%. The combined refrigerant stream exits the mixing chamber at 20°C and 5 kg/s.

Determine:

a. The mass flow rate of the 60°C inlet stream, in kg/s.

b. The mass flow rate of the stream with a quality of 30%, in kg/s.

c. The volume flow rate of the 60°C inlet stream, in m{eq}\displaystyle ^3 {/eq}/min.

First law of Thermodynamics

First law of thermodynamics explains the conservation of energy principle. Energy is transformed from the one form to the other by heat or work transfer.

Answer and Explanation:

Given Data:

  • Pressure of the first stream, {eq}{P_1} = 500\;{\rm{kPa}} {/eq}.
  • Temperature of the first stream, {eq}{T_1} = 60\;^\circ...

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First Law of Thermodynamics: Law of Conservation of Energy

from CLEP Natural Sciences: Study Guide & Test Prep

Chapter 3 / Lesson 3
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