Page 324 - Sustainable On-Site CHP Systems Design, Construction, and Operations

Sustaining Operational Ef ficiency of a CHP System 297

FIGURE 17-1 Schematic diagram of CHP monitoring system used to test performance monitoring
algorithms.

Turbine efficiency System efficiency Value-weighted energy utilization factor
45 1.6
40 1.4
35
1.2
30
Efficiency (%) 25 1 0.8 Energy utilization factor

20
0.6
15
0.4
10
5 0.2
0 0
14:00 14:02 14:03 14:05 14:06 14:08 14:09 14:11 14:12 14:13 14:15 14:16
Time
FIGURE 17-2 Trends of turbine, cooling tower, and system effi ciency, cooling tower utilization
effi ciency and value-weighted fuel utilization factor.