Study On The Law Of The Heating Room Indoor Diurnal Temperature Changing In The Frore Region

Indoor temperature is the main factor of the room amenity, the investigation to the law of indoor diurnal temperature changing provide a theoretic basis for architecture energy saving.In this thesis, the radiator heating room is predigested as a model; the law of indoor diurnal temperature changing is analyzed theoretically and solved. In calculation, the whole room is regarded as thermodynamic system, indoor air and walls are regarded as subsystem. According to the condition, we deduce equation respectively and solve it simultaneously; as a result, we can work out the indoor air's response to the disturbance caused by outdoor air.The laws of indoor diurnal temperature changing are educed by Visual Basic software, four multiple walls that consist of different materials are chosen to analyze, and the delay time of four different walls is calculated. The thermal inertia of 370mm benzene board is the best of all, and the delay time is 6 hours. Unsteady temperature field is also simulated by the Fluent software, the law of temperature field in different time change along with outdoor temperature fluctuate, the indoor temperature response is direct ratio to the thermal inertia of the wall when heat source changes.Solar radiation and cold blast filter are also infection factors of indoor temperature. The infection of outdoor colligate temperature to indoor temperature is considered in natural climate based on analysis of heat engineering capability of the wall. The temperature of southing and the reverse side of room in any time is different from indoor to outdoor. At about 12 o'clock, the different of two parts of the indoor temperature is distinct, the maximal difference is 2.5K.The law of indoor diurnal temperature changing calculated by numerical simulation is validated by testing the temperature of a room in Daqing.