and a 100-W fan is used to distribute the warm air in the room. The heatThe steam radiator transfers heat at a rate of 10,000 kJ/h kPa⋅m3/kg.K , cp = 1.005 kJ/kg·K losses from the room are estimated to be at a rate of about 5000 kJ/h. If the initial temperature of the room air is 10°C, determine how long it will take for the air temperature to rise to 20°C under const pressure (P_(atm )=100 kpa). Assume constant specific heats at room temperature. R = 0.287
- Жыл бұрын
1-30 ) A 4-m,5-m,7-m room is heated by the radiator of a steam heating system.
- Рет қаралды 1,301
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