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

Table 8

Energy saving in plant 3.

Power consumption in old conventional system			Power consumption after the designed control system
Date	Hour	kW	Date	Hour	kW
16.11.2013	10:30:00	85.64	06.01.2014	18:00:00	43.81
16.11.2013	11:00:00	85.3	06.01.2014	18:30:00	43.81
16.11.2013	11:30:00	85.64	06.01.2014	19:00:00	43.48
16.11.2013	12:00:00	84.97	06.01.2014	19:30:00	42.82
16.11.2013	12:30:00	84.97	06.01.2014	20:00:00	43.15
16.11.2013	13:00:00	84.97	06.01.2014	20:30:00	48.13
16.11.2013	13:30:00	84.97	06.01.2014	21:00:00	43.48
16.11.2013	14:00:00	83.64	06.01.2014	21:30:00	43.81
16.11.2013	14:30:00	84.31	06.01.2014	22:00:00	40.83
16.11.2013	15:00:00	83.98	06.01.2014	22:30:00	42.15
16.11.2013	15:30:00	83.64	06.01.2014	23:00:00	49.12
16.11.2013	16:00:00	83.64	06.01.2014	23:30:00	43.81
16.11.2013	16:30:00	83.64	06.01.2014	00:00:00	43.15
16.11.2013	17:00:00	83.64	06.01.2014	00:30:00	44.81
16.11.2013	17:30:00	83.64	06.01.2014	01:00:00	39.5
16.11.2013	18:00:00	83.64	06.01.2014	01:30:00	43.81
16.11.2013	18:30:00	83.31	06.01.2014	02:00:00	39.5
16.11.2013	19:00:00	83.98	06.01.2014	02:30:00	44.15
16.11.2013	19:30:00	83.64	06.01.2014	03:00:00	36.51
16.11.2013	20:00:00	83.64	06.01.2014	03:30:00	38.83
16.11.2013	20:30:00	83.98	06.01.2014	04:00:00	41.16
16.11.2013	21:00:00	84.31	06.01.2014	04:30:00	42.15
16.11.2009	21:30:00	83.98	06.01.2014	05:00:00	38.83
Average		84.22	Average		42.64

Average power consumption: old = 84.22, new = 42.64, and profit = 49.37%.