HT-19-8: Consider a gas-filled cubic room (edge length: 1 m, wall temperature: 600°C, gas temperature: 1400°C). The gas consists of 11% H₂O und 10% CO₂ (volume fractions). The gas pressure is 1 bar. Calculate the net radiative heat flow rate for two different values of the wall emissivity, namely for 0.8 and 0.3. (Answer: 229 kW, 148 kW)

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