Design and Implementation of Energy Efficiency in HVAC Systems Based on Robust PID Control for Industrial Applications

Table 6

Energy saving in plant 1.

Power consumption in old conventional system			Power consumption after the designed control system
Date	Hour	kW	Date	Hour	kW
14.11.2013	10:30:00	108.21	05.01.2014	19:00:00	59.08
14.11.2013	11:00:00	109.53	05.01.2014	19:15:00	67.05
14.11.2013	11:30:00	108.87	05.01.2014	19:30:00	65.72
14.11.2013	12:00:00	109.2	05.01.2014	19:45:00	65.06
14.11.2013	12:30:00	108.87	05.01.2014	20:00:00	60.74
14.11.2013	13:00:00	108.21	05.01.2014	20:15:00	65.72
14.11.2013	13:30:00	108.87	05.01.2014	20:30:00	65.72
14.11.2013	14:00:00	108.54	05.01.2014	20:45:00	65.39
14.11.2013	14:30:00	108.87	05.01.2014	21:00:00	65.72
14.11.2013	15:00:00	108.54	05.01.2014	21:15:00	65.06
14.11.2013	15:30:00	108.54	05.01.2014	21:30:00	67.05
14.11.2013	16:00:00	109.2	05.01.2014	21:45:00	66.05
14.11.2013	16:30:00	108.87	05.01.2014	22:00:00	63.06
14.11.2013	17:00:00	109.53	05.01.2014	22:15:00	65.72
14.11.2013	17:30:00	108.87	05.01.2014	22:30:00	65.39
14.11.2013	18:00:00	109.53	05.01.2014	22:45:00	66.38
14.11.2013	18:30:00	109.2	05.01.2014	23:00:00	67.05
14.11.2013	19:00:00	105.55	05.01.2014	23:15:00	66.38
14.11.2013	19:30:00	105.88	05.01.2014	23:30:00	65.39
14.11.2013	20:00:00	106.88	05.01.2014	23:45:00	66.05
14.11.2013	20:30:00	109.2	05.01.2014	00:00:00	66.05
14.11.2013	21:00:00	108.87	05.01.2014	00:15:00	65.39
14.11.2013	21:30:00	108.87	05.01.2014	00:30:00	65.72
Average		108.55	Average		65.26

Average  power consumption: old = 108.55, new = 65.26, and  profit = 39.88%.