| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
Gas-liquid flow distributions in a multi-pass channels were investigated experimentally. Branch tubes were heated to simulate a real operating condition of the evaporator. The refrigerant flow visualized under the heated conditions was compared with the adiabatic flow. Moreover, temperatures on branch surfaces were measured to estimate liquid distributions to branches, and they were compared with liquid distributions measured in an adiabatic air-water flow under four air/water inlet velocity conditions at the header entrance. The refrigerant flow characteristics in the dividing header under the heated condition were different from those observed under the adiabatic condition. The temperature distributions on branch surfaces were, however, consistent with the water distributions measured in the isothermal air-water flow. This result suggests that gas-liquid distributions in the air-water flow can reproduce the refrigerant flow distributions under the heated condition.
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