3.2 Ventilation rate
Another important factor for indoor environment is the indoor ventilation rate. In order to analysis the effect of
natural ventilation briefly, the total ventilation rate of subaltern room and kitchen in one period time were calculated
out and compared. As shown in Figure5 and Figure6, the ventilation rate of subaltern room and kitchen is in the
maximum under working condition4, then under the working condition2. The figures illustrate the priority is
working condition4, working condition2, working condition5, and then the worst is working condition3. The
conclusion is the same to the part of 3.1.