Optimising the supply parameters oriented to multiple individual requirements in one common space

In many circumstances, different air parameters in multiple locations are required in one common space, such as the personalised temperature requirements of occupants and the different cleanliness requirements of technical processes in industry, and therefore it is important to simultaneously satisfy different requirements by ventilation. In this paper, an optimisation model to determine the supply parameters oriented to different requirements is established. Because the proposed model takes the quantitative relationship between an air parameter in an arbitrary location and various boundary conditions into account, once the required parameters are specified, the supply parameters can be determined instantaneously. The model is then applied in five cases. The proposed model was shown to have an acceptable accuracy in solving supply parameters by comparing the resulting gas concentrations with the required values. Also, the differences between the required parameters are within the capacity of the ventilation system in maintaining parameter differences; therefore, all the requirements can be satisfied even if the number of locations outnumbers the inlets. The proposed model may play an important role in the practical design and control of ventilation systems in providing non-uniform environments.