The insulated tank in Fig P3.143 is to be filled from a high-pressure air supply. Initial conditions in the tank are T = 20°C and p = 200 kPa. When the valve is opened, the initial mass flow rate into the tank is 0.013 kg/s. Assuming an ideal gas, estimate the initial rate of temperature rise of the air in the tank.

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Air supply: 7, = 20°C P, 1500 kPa Valve Tank U= 2001