Transformation of a University Lecture Hall in Valladolid (Spain) into a NZEB: LCA of a BIPV System Integrated in Its Façade

Table 1

Monthly average global and diffuse horizontal irradiance experimental values [14]; monthly average direct, diffuse, and global horizontal irradiance values calculated with PVsyst; and monthly average temperature values in the area of study.

	Horizontal irradiance (kWh/m^2/month)					Temperature (°C)
	Experimental [14]		PVsyst
	Global	Direct	Global	Direct	Diffuse
January	57.6	31.2	56.5	26.9	30.5	2.0
February	90.3	54.3	77.8	45.1	32.7	3.50
March	134.1	84.6	127.7	76.1	51.1	7.30
April	165.9	105	152.1	91.3	60.8	9.80
May	194.4	123	185.7	115.1	70.6	14.6
June	226.5	160.8	207.9	145.5	62.4	19.9
July	232.5	174.3	213.0	161.9	51.1	22.7
August	203.7	147.6	185.4	137.2	48.2	22.3
September	157.8	110.7	139.8	99.3	40.5	18.2
October	100.8	62.7	92.7	57.5	35.2	12.6
November	65.4	36.3	59.7	31.0	28.7	6.6
December	49.2	25.5	48.1	23.6	24.5	3.3
Average	139.9	93.0	128.9	84.2	44.7	11.9
Total	1678.2	1116	1546	1010	536