Question #109877

I’m stuck with this example question. Some explanation and work through would be appreciated

An ideal gas enters a horizontal heating pipe at a temperature of 200oC, and with a specific enthalpy of 400 "kJ/ kg" .

As it travels along the pipe heat is added at constant pressure, and the air leaves the heater at a temperature of 300℃.

No work is done on the gas during the heating process.

The gas velocity at inlet to the heater is 25 "m/s" , and at the outlet it is 30 "m/s" .

(a) Determine the specific enthalpy of the gas as it leaves the heater pipe, if the gas has a specific heat at constant pressure c_p= 0.844 "kJ/" ("kg K" ). 3

(b) Determine, using the steady flow energy equation, the heat added per kg of gas as it flows through the heater pipe.

Give your answer in "kJ/kg" .

An ideal gas enters a horizontal heating pipe at a temperature of 200oC, and with a specific enthalpy of 400 "kJ/ kg" .

As it travels along the pipe heat is added at constant pressure, and the air leaves the heater at a temperature of 300℃.

No work is done on the gas during the heating process.

The gas velocity at inlet to the heater is 25 "m/s" , and at the outlet it is 30 "m/s" .

(a) Determine the specific enthalpy of the gas as it leaves the heater pipe, if the gas has a specific heat at constant pressure c_p= 0.844 "kJ/" ("kg K" ). 3

(b) Determine, using the steady flow energy equation, the heat added per kg of gas as it flows through the heater pipe.

Give your answer in "kJ/kg" .

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