Towards Healthy Levels of Carbon Dioxide in Schools of the National Oil Company of Abu Dhabi

Table 3

Indoor air-quality parameters precleaning and postcleaning the AC filters.

Location	Code	Vol. (m^3)	No. of occupants	Grade level	Precleaning AC filters				Postcleaning AC filters
					CO2 levels (ppm)	T (°C)	RH (%)	CO2 indoor/outdoor	CO2 levels (ppm)	T (°C)	RH (%)	CO2 indoor/outdoor
Arabic classroom	G138	238	12	9	2,893	27	63	6.90	1,048	25	38	2.50
Arabic classroom	G132	238	17	7	3,098	26	67	7.40	1,318	24	42	3.15
Math classroom	G009	253	7	12	2,897	25	63	6.91	1,189	24	37	2.84
English classroom	G008	156	8	12	3, 311	25	64	7.90	1,308	24	38	3.12
Chemistry lab	G123	140	10	10	2,792	24	69	6.66	1,033	23	43	2.47
Cafeteria	G106	756	44	6–12	3,381	25	66	8.00	1,087	24	41	2.60
Physics lab	G083	349	13	12	2,778	25	65	6.63	971	24	39	2.32
Hum. classroom	G074	196	10	8	3,009	24	65	7.18	1,272	23	41	3.00
Hum. classroom	G075	196	13	8	2,625	25	62	6.26	1,330	24	34	3.17
Arabic classroom	G134	238	17	7	3,117	25	61	7.44	1,286	24	32	3.07
Art lab	G087	349	21	10	3,107	25	65	7.42	1,046	24	39	2.50
Math classroom	G014	253	9	11	2,822	25	60	6.74	920	24	32	2.20
Physics lab	G080	349	19	11	2,897	25	61	6.91	1,167	24	32	2.80
Hum. classroom	G072	196	19	6	3,275	24	60	7.82	1,014	23	31	2.42
English classroom	G020	156	20	10	2,993	25	61	7.14	763	24	34	1.82
Time-based averages					∼3000	∼25	∼63	∼7.2	∼1,117	∼24	∼37	∼2.7