American Efficiency Services Efficiency Signal

The unit as read

What the plant's own readings say about the condenser today. Representative values; a modelled unit replaces them.

Reading

Condenser

Cooling water

Vacuum

Cleanliness factorwarning
0.78design 0.92 · trigger 0.82
Back pressurewarning
3.06 inHgAexpected 2.50 at design cleanliness
Excess back pressure10.14 inHg
Heat-rate impact20.21 %
Extra fuel39.6 MMBtu/hr
Cost4$22 /hr
Avoidable spend5$161,000 /yr

At this fouling rate the unit crossed its cleaning trigger about 5 months ago.

  1. saturation pressure at inlet + rise + TTD, plus the air in-leakage penalty, minus the saturation pressure at design cleanliness
  2. × 1.5 % per inHg, flat; the turbine curve replaces it
  3. 10,000 Btu/kWh × 450 MW
  4. × $2.25/MMBtu
  5. × 8,760 h × 0.85 capacity
American Efficiency Serviceswith Efficiency Signal
Condenser service proposalExample Station · Unit 2

The unit as read

Services proposed

ServiceWhat it does

What changes

As readAfter serviceDelta
After a cleaning: same cycle against the serviced unit
Value recouped

Basis

Representative figures for discussion. The value chain is the one Efficiency Signal runs on a modelled unit (excess back pressure → heat-rate impact → extra fuel → cost); the sensitivity and service effects here are placeholders until this unit's own specifications and readings are in. Dollar figures are internal until proven on the unit.