An Energy Efficiency Evaluation Method Based on Energy Baseline for Chemical Industry

Table 2

Energy performance related variables and parts of measured data.

Name	Number	Unit	Data (per minute)
			10:00	10:01	10:02	10:03	10:04	10:05	⋯
The compressor speed		RPM	4078	4067	4025	4070	4059	4012	⋯
K-13001 inlet pressure		KPA	33.3	32.8	32.9	33.2	33.0	33.2	⋯
K-13001 outlet temperature		°C	35.0	34.9	35.4	35.4	35.3	35.2	⋯
K-13004 outlet pressure		°C	75.2	74.8	73.9	75.2	74.9	74.7	⋯
K-13004 outlet pressure		MPA	1.555	1.549	1.540	1.547	1.548	1.549	⋯
K-13004 outlet flow		T/H	241.9	241.9	242.7	245.2	243.2	241.4	⋯
K-13005 outlet temperature		°C	70.9	71.8	70.8	71.3	70.8	71.2	⋯
K-13005 outlet pressure		MPA	3.593	3.634	3.660	3.654	3.639	3.638	⋯
Turbine inlet pressure		MPA	11.48	11.59	11.58	11.54	11.65	11.56	⋯
Turbine inlet temperature		°C	518.2	515.9	515.5	514.8	513.5	515.0	⋯
C-1365 tower top temperature		°C	−21.5	−21.9	−21.6	−21.5	−21.7	−21.8	⋯
C-1365 tower top pressure		MPA	1.461	1.440	1.451	1.458	1.463	1.442	⋯
K-1300 three return one		%	7.1	7.2	7.1	7.2	7.1	7.2	⋯
K-1300 four return four		%	6.5	6.5	6.4	6.4	6.5	6.5	⋯
K-1300 five return five		%	6.6	6.6	6.6	6.6	6.6	6.5	⋯
K-13005 outlet flow		T/H	223.7	223.8	223.1	222.8	226.5	226.5	⋯
Turbine outlet flow		T/H	323.1	322.8	320.0	324.0	323.5	322.3	⋯
EnPI (/)		—	1.444	1.442	1.434	1.454	1.428	1.423	⋯