Development of Regression Models considering Time-Lag and Aerosols for Predicting Heating Loads in Buildings

Table 17

Regression coefficients for a DOE medium office building depending on different models.

Coefficients^a
Model		Unstandardized coefficients		Standardized coefficients	t	Sig.	Collinearity statistics
		B	Std. error	Beta			Tolerance	VIF
Modified model	(Constant)	−332178078.900	19450841.631	—	−17.078	0.000	—	—
	Dew point temperatures	−1278243.171	27,075.391	−0.770	−47.211	0.000	0.125	8.002
	Relative humidity	318029.341	8735.744	0.402	36.406	0.000	0.274	3.656
	Atmospheric station pressure	2937.887	190.743	0.118	15.402	0.000	0.567	1.764
	Horizontal infrared radiation	66,114.532	2691.386	1.094	24.565	0.000	0.017	59.610
	Global horizontal radiation	−90530.015	2306.310	−1.149	−39.253	0.000	0.039	25.744
	Direct normal radiation	59,029.740	1259.159	0.814	46.880	0.000	0.110	9.069
	Diffuse radiation	109882.074	2972.907	0.682	36.961	0.000	0.098	10.234
	Total sky cover	−3968922.089	158298.925	−1.014	−25.072	0.000	0.020	49.187
	Wind speed	−640957.692	68,159.260	−0.062	−9.404	0.000	0.754	1.327
	Visibility	−340103.073	171843.921	−0.014	−1.979	0.048	0.682	1.466
New model	(Constant)	−137086417.229	19542748.049	—	−7.015	0.000	—	—
	Dew point temperatures	−112436.116	27,307.607	−0.136	−4.117	0.000	0.151	6.625
	Atmospheric station pressure	1264.005	192.177	0.107	6.577	0.000	0.623	1.604
	Horizontal infrared radiation	47,644.241	3375.835	1.556	14.113	0.000	0.014	73.809
	Direct normal radiation	16,462.981	1213.513	0.178	13.566	0.000	0.962	1.040
	Total sky cover	−2787320.969	196312.532	−1.437	−14.198	0.000	0.016	62.171
	Dry bulb temperatures	−581774.230	37,805.690	−0.586	−15.389	0.000	0.114	8.794
	AOD	−566944.126	182564.249	−0.042	−3.105	0.002	0.879	1.137
	Precipitable water	1076401.110	240985.736	0.080	4.467	0.000	0.512	1.955
Limited model	(Constant)	−263437804.945	21012890.768	—	−12.537	0.000	—	—
	Dry bulb temperatures	−1285938.756	75,197.392	−0.692	−17.101	0.000	0.023	43.618
	Dew point temperatures	582520.586	80,798.698	0.351	7.210	0.000	0.016	63.097
	Relative humidity	−152490.019	22,022.183	−0.193	−6.924	0.000	0.049	20.572
	Atmospheric station pressure	2831.572	203.680	0.114	13.902	0.000	0.561	1.781
	Global horizontal radiation	13,177.043	602.849	0.167	21.858	0.000	0.642	1.557
	Wind speed	−445559.152	71,983.529	−0.043	−6.190	0.000	0.763	1.310
	Total sky cover	−153324.249	27,559.024	−0.039	−5.563	0.000	0.758	1.320

^aDependent variable: heating load of a DOE medium office building.