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FCU 1000 Fuel Conditioning Unit

FCU1000The Sierra-CP Fuel Conditioning Unit is designed to enhance the features of the FuelTrak Steady-State, FuelTrak Transient or other 3rd party Fuel Flow Meters. The FCU provides computer controlled fuel supply temperatures, to either combat extreme ambient conditions, high fuel return line temperatures or to match specific test requirements.   The FCU provides a temperature conditioned, pump driven process loop, which is fed into heat exchangers connected to the engine fuel supply line and optionally the spillback and fuel tank supply lines. The FuelTrak fuel flow meters (as an option) have these heat exchangers integrated into the measurement enclosure, minimizing installation pipework required.

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FCU Model 3000
Maximum Fuel Temperature °C 60
Minimum Fuel Temperature °C 10 Above Chilled Supply Temp
Immersion Heater Power kW 3 9
Cooling Power kW 3 7
Process Enclosure Size (H x W x D) mm 600 x 600 x 250 800 x 800 x 350
Control Enclosure Size (Common between FuelTrak and FCU) mm 400 x 400 x 200
Electrical Supply Required 230V Single Phase 380V Three Phase

Benefits & Features

  • Condition Fuel using set points from CADET or 3rd party control system (Via the Sierra CP Fuel Controller)
  • Integrate into existing fuel systems
  • Enclosure allows wall or post mounting
  • Common control enclosure between Sierra CP FuelTrak and FCU systems
  • Conditioned process loop means fuel is not heated/cooled directly

System Description

The Control Enclosure marshals the mains switching and I/O associated with the control of the Process Enclosure. The Process Enclosure requires one set of Feed and Return lines for the process fluid circuit and one for the Chilled Water Circuit, therefore minimising the in-cell pipework. The temperature in the header tank is maintained or adjusted by directing the conditioning loop intake to one of two circuits. To cool the process loop, fluid is diverted through the chilled circuit’s heat exchanger before return to the header tank. To warm the process loop water circuit, the heat exchanger is by-passed and the immersion heater in the header tank is turned on. A PRT mounted in the header tank constantly monitors the temperature of the process water. A water level safety switch in the header tank prevents the Immersion Heater being operated when there is insufficient fluid, and provides feedback to the operator.

The process water from the header tank is fed through a second Heat Exchanger to cool or warm the fuel from the FuelTrak (or other) fuel conditioning unit, before it is fed to the engine. It is assumed that the fuel delivery temperature at the engine is already monitored (by CADET or another system). This channel is required to allow CADET to adjust the conditioning accordingly. As an option Sierra-CP can supply a suitable PRT probe and the associated signal processing hardware.

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