4 air flows into the gas heater at 203 kpa absolute and 20cas shown in
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Question
4. Air flows into the gas heater at 203 kPa (absolute) and 20°Cas shown in the figure at a steady velocity of 15m/s through a100mm pipe. If air exits at
150 kPa (absolute) and 75°C through a 150mm pipe, what is the velocity? (Hint: Watch lecture)