Classified expression of temperature distribution in rooms with displacement ventilation

The development of displacement ventilation and its derivative form provides probability to improve indoor environmental condition and system performance. Most of the indexes for evaluating the performance are based on real vertical temperature distribution. Yet the existing empirical models for temperature prediction usually have some limitations in function, so that it is difficult to avoid larger errors. Puts forward a classified expression method, taking specific approximate solutions as a basic analytical frame. The method is helpful to differentiate and analyse room temperature distribution problems with different kinds of heat sources distribution and flow rates.