One ton (1000 kg) of liquid water at 80C is brought into a well-insulated and well-sealed 4-m

Question:

One ton (1000 kg) of liquid water at 80°C is brought into a well-insulated and well-sealed 4-m = 5-m = 6-m room initially at 22°C and 100 kPa. Assuming constant specific heats for both air and water at room temperature, determine the final equilibrium temperature in the room. Answer: 78.6°C