Boolean-Based Surface Procedure for the External Heat Transfer Analysis of Dams during Construction

Table 3

Calculation of solar irradiation.

(a)  

Xiluodu Dam	Latitude: 28°13^′02^′′ N	Longitude: 103°33^′46^′′ E
Zhaotong Station	Latitude: 27°19′48^′′ N	Longitude: 103°45′00^′′ E

(b)  

	Jan 21st	Feb 21st	Mar 21st	Apr 21st	May 21st	Jun 21st
𝐷	21	52	80	111	141	172
𝜂Beam	0.362	0.369	0.448	0.479	0.525	0.504
𝜂Diff	2.080	2.084	1.835	1.791	1.707	1.820
𝐸^∗Beam  (W/m^2)	674.24	719.12	750.84	764.69	762.99	758.19
𝐸^∗Diff  (W/m^2)	189.32	204.92	217.25	223.84	224.33	223.10
𝐻Set−𝐻Rise (h)	18.6−8.0=10.6	19−7.7=11.3	19.2−7.3=11.9	19.5−6.7=12.8	19.8−6.3=13.5	19.9−6.2=13.8
𝐸Beam  (W/m^2)	466.16	504.89	541.53	551.07	547.52	546.35
𝐸Diff  (W/m^2)	132.36	143.80	154.89	158.71	158.28	157.89
𝐸^𝑉Sun  (W/m^2)	401.51	360.70	280.32	162.93	91.00	71.70
𝐸^𝐻Sun  (W/m^2)	378.29	448.80	521.64	561.99	568.09	568.47
	Jul 21st	Aug 21st	Sep 21st	Oct 21st	Nov 21st	Dec 21st
𝐷	202	233	264	294	325	355
𝜂Beam	0.512	0.546	0.487	0.448	0.391	0.365
𝜂Diff	1.820	1.708	1.833	1.883	2.025	2.076
𝐸^∗Beam  (W/m^2)	751.02	754.78	740.12	707.95	667.55	650.57
𝐸^∗Diff  (W/m^2)	222.60	220.96	214.20	201.56	187.34	181.68
𝐻Set−𝐻Rise (h)	19.9−6.5=13.4	19.6−6.7=12.9	19−6.9=12.1	18.4−7.2=11.2	18.1−7.6=10.5	18.2−7.9=10.3
𝐸Beam  (W/m^2)	547.62	539.21	526.69	498.23	463.08	446.57
𝐸Diff  (W/m^2)	158.32	155.75	150.59	142.10	131.67	129.80
𝐸^𝑉Sun  (W/m^2)	89.61	157.91	270.12	360.71	401.60	407.44
𝐸^𝐻Sun  (W/m^2)	568.91	550.41	507.16	441.23	375.37	348.70