Development and Application of a ZigBee-Based Building Energy Monitoring and Control System

Table 3

Power consumption data for two electric heaters (kWh).

Time (h)		1.00	8.17	9.35
C: ZBEMCS	Branch 1	0.609	8.838	15.779
	Branch 2	1.508	18.633	7.278
	Trunk	2.117	27.471	23.057
D: standard wattmeter	Branch 1	0.7	8.9	15.8
	Branch 2	1.6	18.7	7.3
	Trunk	2.3	27.6	23.1
Power on nameplate (kW)	Branch 1	0.6	1.0	1.6
	Branch 2	1.5	2.2	0.7
	Trunk	2.1	3.2	2.3
E: nominal power	Branch 1	0.6	8.170	14.960
	Branch 2	1.5	17.974	6.545
	Trunk	2.1	26.144	21.505	Average deviation	Standard deviation
C−D	Branch 1	−0.091	−0.062	−0.021	−0.058	0.035
	Branch 2	−0.092	−0.067	−0.022	−0.060	0.035
	Trunk	−0.183	−0.129	−0.043	−0.118	0.071
C−E	Branch 1	0.009	0.668	0.819	0.499	0.431
	Branch 2	0.008	0.659	0.733	0.467	0.399
	Trunk	0.017	1.327	1.552	0.965	0.829
D−E	Branch 1	0.100	0.730	0.840	0.557	0.399
	Branch 2	0.100	0.726	0.755	0.527	0.370
	Trunk	0.200	1.456	1.595	1.084	0.768