Research on indoor light environment of gymnasium based on Ecotect simulation analysis

Figure 1.

Figure 2.

Simulation results of distributed skylight lighting at different angles

Body model	Emin(lx)	Emax(lx)	Eave(lx)	U2
parallel arrangement	320	2010	1209.06	0.18
15° Angle arrangement	320	2960	1609.29	0.15
30° Angle arrangement	320	2120	1770	0.13
45° Angle arrangement	360	3350	2094.98	0.12

Lighting simulation results at different heights

Body model	Emin(lx)	Emax(lx)	Eave(lx)	U2
H=14m	130	1530	942.01	0.14
H=16m	130	1530	832.98	0.15
H=18m	100	1460	799.78	0.10
H=20m	90	1420	762.92	0.08
H=22m	100	1310	713.79	0.14

Summer stadium illuminance, lighting coefficient table (Unit:lx)

test time	The average illumination value of the competition site is Eave 01	Lighting factor of the competition venue	Audience area average illumination value Eave 02	Lighting factor of spectator area	The average illumination value in the gymnasium Eave	Daylighting factor in the stadium
9:00	20	1.35%	18	1.45%	19	1.32%
11:00	16	0.79%	32	1.24%	28	1.08%
13:00	150	6.67%	72	2.02%	92	3.68%
15:00	6	0.58%	15	1.85%	5	1.32%
average value	48	2.35%	34.25	1.64%	36	1.85%

Transition season stadium illuminance, lighting coefficient table (Unit:lx)

test time	The average illumination value of the competition site is Eave 01	Lighting factor of the competition venue	Audience area average illumination value Eave 02	Lighting factor of spectator area	The average illumination value in the gymnasium Eave	Daylighting factor in the stadium
9:00	14	1.87%	15	1.78%	14	1.84%
11:00	36	1.51%	35	1.61%	36	1.56%
13:00	12	1.13%	18	1.15%	19	1.14%
15:00	9	1.56%	11	2.01%	13	2.08%
average value	18	1.52%	20	1.64%	21	1.66%

Standard value of daylight factor

Lighting class	Visual task classification		sidelighting		top daylighting
	Operating accuracy	Identification minimum size (mm)	Minimum lighting factor (%)	Indoor Critical Illuminance (lx)	Average lighting factor (%)	Indoor Critical Illuminance (lx)
I	special detailed	d ≤ 0.15	5	250	7	350
II	Very delicate	0.15 < d ≤ 0.3	3	150	4.5	225
III	delicate	0.3 < d ≤ 1.0	2	100	3	150
IV	ordinary	1.0 < d ≤ 5.0	1	50	1.5	75
V	rough	d > 5.0	0.5	25	0.7	35

Lighting simulation results with different area ratios

Body model	Emin(lx)	Emax(lx)	Eave(lx)	U2
Skylight area/competition hall area=0.15	18	900	318.4	0.09
Skylight area/competition hall area=0.25	62	1300	621.45	0.11
Skylight area/competition hall area=0.35	160	1640	988.61	0.16
Skylight area/competition hall area=0.45	190	2190	1320	0.18
Skylight area/competition hall area=0.55	250	2210	1651.67	0.19