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

Table 25

Regression coefficients for a DOE large 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)	−247363320.740	19550986.572	—	−12.652	0.000	—	—
	Atmospheric station pressure	2380.032	190.899	0.096	12.467	0.000	0.556	1.799
	Horizontal infrared radiation	76,728.709	2707.367	1.270	28.341	0.000	0.016	61.392
	Direct normal radiation	56,924.641	1251.706	0.785	45.478	0.000	0.110	9.121
	Total sky cover	−4535356.153	158396.421	−1.159	−28.633	0.000	0.020	50.122
	Dry bulb temperatures	−1297018.379	25,292.663	−0.698	−51.280	0.000	0.176	5.672
	Relative humidity	−30575.346	6723.627	−0.039	−4.547	0.000	0.454	2.204
	Global horizontal radiation	−82908.168	2300.532	−1.052	−36.039	0.000	0.038	26.070
	Diffuse radiation	101684.144	2950.819	0.631	34.460	0.000	0.097	10.261
	Wind speed	−678986.494	67,585.368	−0.066	−10.046	0.000	0.753	1.328
	Visibility	−773429.426	170914.893	−0.031	−4.525	0.000	0.678	1.476
New Model	(Constant)	−137086417.229	19542748.049	—	−7.015	0.000	—	—
	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
	Dew point temperatures	−112436.116	27,307.607	−0.136	−4.117	0.000	0.151	6.625
	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)	−3092395121.054	279777336.777	—	−11.053	0.000	—	—
	Dry bulb temperatures	−16496447.837	1001219.983	−0.677	−16.476	0.000	0.023	43.618
	Dew point temperatures	7565123.922	1075798.887	0.347	7.032	0.000	0.016	63.097
	Relative humidity	−1931850.757	293215.611	−0.186	−6.588	0.000	0.049	20.572
	Atmospheric station pressure	33,401.664	2711.907	0.102	12.317	0.000	0.561	1.781
	Global horizontal radiation	172387.218	8026.661	0.167	21.477	0.000	0.642	1.557
	Wind speed	−4842190.418	958428.818	−0.036	−5.052	0.000	0.763	1.310
	Total sky cover	−1842155.224	366936.200	−0.036	−5.020	0.000	0.758	1.320

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