bacteria in the room before the cleaning gradually reduced over time; then it has
the highest number of bacteria after getting up; then as no one cleaning, thenumber of bacteria in two different rooms will be reduced; bacteria begin to rise
after cleaning to the second detection of bacteria exceeded a multiple of the
maximum and then decreased. I believe that is because the cleaning makes the
increase in the number of airborne bacteria, bacterial super-multiples of the room
will be a sharp decline until the time of the cleaned up after some time.
By comparison, the air-conditioned rooms’ bacteria number is always higher
than naturally ventilated rooms, so to enhance natural ventilation is to reduce the
total number of indoor bacteria, and cleaning is the main cause of secondary
pollution, but this cannot conclude the air-conditioned room air quality is poorer
than naturally ventilated rooms. There is the need for further analysis.
52.4.2 Deep Inspection
Although the number of bacteria obtained from the macroscopic response be
processed there and air quality, but to draw the exact results, but also on the
bacterial composition further research and identification, analysis of bacterial
components.Analysis through the study of bacteria, Gram-positive bacteria accounted for
most (about 78 %); composition of the fungi is shown in Table 52.3.
Fungal ingredients are mainly spores, and the percentage of the various com-
ponents are drawn in curves and shown in Fig. 52.3.
From Table 52.3 and Fig. 52.3, we can analyze whether it is air-conditioned
rooms or natural ventilation rooms, various types of fungi in the proportion
remained at a relatively balanced level, and spores percentage is relatively higher
in the air-conditioned rooms; other types of fungi is relatively higher in the natural
ventilation conditions.
52.5 Conclusion
Based on the above findings and through comparative study of air quality of the
natural ventilation rooms and air-conditioned rooms in the hotel, we know that the
bacterial number of air-conditioned room is more than the naturally ventilated
rooms, and the bacterial composition in terms of overall similarity, proportion of
various types of fungi is stable, but the proportion of spore is higher in the natural
ventilation room, but the air quality under the two conditions are able to meet the
normal hotel use. Through comparative analysis of the data, we can clearly see that
the air quality in the hotel room is good or bad is not just related to air conditioning
and natural ventilation, but also to human factors, and the impact on air qualityfactors are very complex, which must be considered in order to make hotel rooms
have the best living environment. Hotel rooms are designed to comprehensively
consider the local climatic conditions, surrounding environment, and among other
factors, to achieve the organic combination of natural ventilation and air condi-
tioning systems. It is necessary to consider the space ventilation advantages and
the good effects of natural ventilation so as to create a comfortable environment
for both customers and the staff.
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