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

Table 12

Model summary for a DOE medium office building depending on time-lag.

Coefficients^a
Model		Unstandardized coefficients		Standardized coefficients	t	Sig.	Collinearity statistics
		B	Std. Error	Beta			Tolerance	VIF
Time-lag0	(Constant)	−232365034.136	20514208.737	—	−11.327	0.000	—	—
	Dry bulb temperatures	−1239414.048	75,319.865	−0.667	−16.455	0.000	0.021	47.057
	Dew point temperatures	−354626.266	79,919.948	−0.214	−4.437	0.000	0.015	66.370
	Relative humidity	66,371.259	22,274.126	0.084	2.980	0.003	0.044	22.624
	Atmospheric station pressure	2116.094	197.968	0.085	10.689	0.000	0.553	1.809
	Horizontal infrared radiation	99,198.849	2813.952	1.642	35.252	0.000	0.016	62.031
	Global horizontal radiation	−3376.020	2404.186	−0.043	−1.404	0.160	−0.038	26.628
	Direct normal radiation	788.013	1296.095	0.011	0.608	0.543	0.109	9.146
	Diffuse radiation	13,477.568	3084.249	0.084	4.370	0.000	0.095	10.484
	Wind speed	−479633.798	69,883.408	−0.047	−6.863	0.000	0.753	1.328
	Total sky cover	−6135755.540	164883.515	−1.568	−37.213	0.000	0.020	50.797
	Visibility	408798.727	177884.682	0.017	2.298	0.022	0.669	1.495
Time-lag1	(Constant)	−242363953.699	20520409.598	—	−11.811	0.000	—	—
	Dry bulb temperatures	−1289408.649	75,333.909	−0.694	−17.116	0.000	0.021	47.050
	Dew point temperatures	−155279.237	79,936.057	−0.094	−1.943	0.052	0.015	66.368
	Relative humidity	16,763.249	22,278.700	0.021	0.752	0.452	0.044	22.625
	Atmospheric station pressure	2277.502	198.032	0.091	11.501	0.000	0.553	1.809
	Horizontal infrared radiation	87,070.308	2814.591	1.441	30.935	0.000	0.016	62.032
	Global horizontal radiation	−39853.596	2404.644	−0.506	−16.574	0.000	0.038	26.627
	Direct normal radiation	25,968.009	1296.347	0.358	20.032	0.000	0.109	9.146
	Diffuse radiation	54,012.154	3084.824	0.335	17.509	0.000	0.095	10.484
	Wind speed	−616322.819	69,904.642	−0.060	−8.817	0.000	0.753	1.328
	Total sky cover	−5285555.158	164922.949	−1.351	−32.049	0.000	0.020	50.800
	Visibility	35,564.622	177925.734	0.001	0.200	0.842	0.669	1.495
Time-lag2	(Constant)	−242862773.124	19841671.213	—	−12.240	0.000	—	—
	Dew point temperatures	102726.330	77,287.300	0.062	1.329	0.184	0.015	66.365
	Relative humidity	−57775.571	21,540.586	−0.073	−2.682	0.007	0.044	22.625
	Atmospheric station pressure	2360.095	191.484	0.095	12.325	0.000	0.553	1.810
	Horizontal infrared radiation	76,361.042	2721.411	1.264	28.059	0.000	0.016	62.033
	Global horizontal radiation	−82461.104	2324.947	−1.047	−35.468	0.000	0.038	26.627
	Direct normal radiation	56,837.692	1253.391	0.784	45.347	0.000	0.109	9.146
	Diffuse radiation	101106.744	2982.570	0.628	33.899	0.000	0.095	10.484
	Total sky cover	−4510822.624	159465.297	−1.153	−28.287	0.000	0.020	50.803
	Dry bulb temperatures	−1387805.281	72,836.836	−0.747	−19.054	0.000	0.021	47.042
	Wind speed	−677958.805	67,588.517	−0.066	−10.031	0.000	0.753	1.328
	Visibility	−799488.056	172032.483	−0.032	−4.647	0.000	0.669	1.495

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