Investigation of students’ comfort and adaptation in university dormitories in humid subtropical climatic area in winter in Chongqing, China

Figures & data

Figure 1. Data collection in indoor environments (a) and (b) Some interior space in Chinese and international students’ rooms; (c) Ta and RH recording, (d) AC power and heating-triggered recording

Table 1. Environmental parameters and instruments

Instrument	Measured parameter	Valid range	Accuracy
MCH-383SD	Air temperature	0 °C~50 °C	±0.8 °C.
	Relative humidity	10 ~ 90 %	±4 % RH
HD 2303.0 Omni-directional anemometer	Air Velocity Air temperature	0–5 m/s -30~+110 °C	±0.02 m/s (0–0.99 m/s) ±0.1 m/s (1–5 m/s) ±0.4 °C
KIMO TR50	Global temperature	−100-400 °C	±0.3 °C
WTHOT2	AC-Electricity consumption

Table 2. Demographic information of the study subjects

Subjects		Age	Living years	Height (M)	Weight (Kg)	BMI (Kg/m^2)
International students	Mean	25.5	3.81	1.71	66.25	22.36
	Std Dev	2.15	1.13	0.05	6.96	1.6
	Maximum	28	6	1.8	80	24.96
	Minimum	20	2	1.6	53	19.95
Chinese students	Mean	24	4.28	1.66	58.57	21.1
	Std Dev	1.11	1.48	0.05	7.78	1.8
	Maximum	25	6	1.76	73	23.87
	Minimum	21	2	1.58	50	18.6

Table 3. Indoor environmental parameters in the students’ rooms

Parameters	Statistical summaries	International Students	Chinese students
Air temperature (°C)	Mean	18.7	18.1
	Std Dev	1.1	1.4
	Maximum	26.7	26.9
	Minimum	14.7	15.0
Radiant temperature (°C)	Mean	18.1	17.8
	Std Dev	2.2	1.8
	Maximum	24.6	23.9
	Minimum	15.0	14.6
Relative humidity (%)	Mean	68.8	69.4
	Std Dev	6.71	5.85
	Maximum	82.35	85.61
	Minimum	47.16	48.52
Air velocity (m/s)	Mean	0.05	0.08
	Std Dev	0.04	0.06
	Maximum	0.21	0.4
	Minimum	0.01	0.01
Predicted mean vote (PMV)	Mean	−1.14	−1.41
	Std Dev	1.28	1.09
	Maximum	1.09	0.98
	Minimum	−3	−3
Predicted percent of dissatisfied (PPD)	Mean	37.73	48.85
	Std Dev	43.22	38.85
	Maximum	100	100
	Minimum	5.	5.

Figure 2. Indoor relative humidity distribution

Table 4. Clothing insulation and metabolic rate of the subjects

Parameters	Statistical summaries	International students	Chinese students
Clo Insulation (Clo)	Mean	1.37	1.29
	Std Dev	0.62	0.49
	Maximum	2.16	1.97
	Minimum	0.53	0.46
Metabolic rate (met) 58.2 W/m^2 = 1 met	Mean	1.14	1.12
	Std Dev	0.26	0.23
	Maximum	1.6	1.6
	Minimum	0.8	0.8

Figure 3. Distribution of thermal sensation vote for international and Chinese students

Figure 4. Thermal sensation vote for Chinese students and the three categories of international students

Figure 5. Mean thermal sensation votes and indoor air temperature for international and Chinese students

Figure 6. Frequency of occupants’ thermal preference for international and Chinese students

Figure 7. Frequency of occupants’ thermal preference for Chinese students and the three categories of international students

Figure 8. Relationship between humidity sensation and relative humidity

Figure 9. Humidity sensation votes distribution and its corresponding relative humidity and indoor air temperature for international and Chinese students

Figure 10. Occupants’ humidity preference for international and Chinese students

Figure 11. Occupants’ humidity preference for Chinese students and the three categories of international students

Figure 12. Proportion of thermal acceptability for international and Chinese students

Figure 13. Occupants’ behavioral adjustments for all international and Chinese students and the three categories of international students