Jet Fuel Thermal Oxidation Stability Tester Supplier

Safeguarding Jet Engine Performance with the Jet Fuel Thermal Oxidation Stability Tester

Introduction
High-temperature sections of jet engines and fuel-system heat exchangers expose aviation fuels to oxidative stress that can form gums and insoluble deposits. The Jet Fuel Thermal Oxidation Stability Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd. evaluates a fuel’s tendency to deposit under simulated operating conditions, helping refiners and airlines maintain fuel quality and engine reliability.

Testing Principle
Following the JFTOT method (ASTM D3241/IP 323), a thin film of jet fuel flows over a heated platinum loop held at a constant temperature (typically 260–300 °C). As fuel flows at a controlled rate (e.g., 10 mL/min), oxidative by-products accumulate on the hot loop, altering heat transfer and pressure drop. The instrument measures:

• Deposit Growth by weight (mg) after a fixed run time (commonly 30 minutes).

• Pressure Differential across the loop assembly in real time, indicating blockage progression.

• Visual Inspection via a magnified window or integrated camera for qualitative assessment.

Key Design Features

• Precision Loop Heater
  A sheath-type electric heater with PID control maintains loop temperature within ±1 °C.

• Fuel Flow Control
  Mass-flow controllers ensure consistent film thickness by regulating flow to ±0.1 mL/min.

• Differential Pressure Transducer
  Monitors pressure drop to detect incipient fouling.

• Automated Clean Cycle
  Post-run solvent rinsing removes deposits, minimizing downtime between tests.

• Data Management Software
  Logs temperature, flow, pressure, and deposit weight; generates standard compliance reports.

Industry Applications

• Refineries & Blending Plants: Screen fuel batches and bio-blend levels for thermal oxidative stability.

• Airlines & MRO Facilities: Monitor fuel quality to prevent nozzle fouling and heat-exchanger blockage.

• Regulatory Laboratories: Certify fuels against international standards for jet-fuel performance.

• Engine OEMs: Correlate fuel stability data with engine deposit formation in developmental testing.

Best Practices

1. Pre-Filter Samples
   Remove particulates > 1 µm to isolate chemical deposit formation from mechanical fouling.

2. Loop Maintenance
   Inspect loop surface condition monthly; replace if surface roughness exceeds 5 µm Ra.

3. Reference Runs
   Include certified high- and low-stability jet fuels in each sequence to verify instrument performance.

4. Environmental Control
   Maintain laboratory temperature (20 – 25 °C) and humidity (40 – 60 %) to reduce variability.

With this Jet Fuel Thermal Oxidation Stability Tester, stakeholders can detect stability issues early, optimize fuel blends, and prevent engine deposit–related maintenance events.