Pumped systems are not inefficient. They are just not measured.

  • May 1, 2026

How vapor quality sensors turn existing systems into high-efficiency systems

Most pumped ammonia systems are designed for reliability. And they deliver. But they are rarely designed for optimal efficiency in real operation.

The gap between design and reality is where most energy is lost. And that gap is caused by one thing: lack of measurement.

 

You cannot control what you do not measure

In most systems, circulation rate is not controlled based on actual conditions. It is based on assumptions.

At part load, circulation increases, pressure drop increases, and compressors compensate by lowering suction pressure.

This is not control. It is reaction.

Uncontrolled systems
  • No visibility of liquid in evaporator
  • Circulation increases at part load
  • Pressure drop increases
  • Suction pressure decreases
  • Energy consumption increases

 

This is where HB sensors change the system

A vapor quality sensor measures the actual liquid content in the gas leaving the evaporator.

Not calculated. Not estimated. Measured.

This single measurement allows you to control liquid feed based on reality. That changes everything.

What the sensor enables
  • Real-time liquid measurement
  • Accurate control of liquid feed
  • Minimized circulation rate
  • Stable evaporation
  • Higher suction pressure

 

From overfeeding to controlled evaporation

Without measurement, systems are overfed to stay safe.

With HB vapor quality sensors, you can operate close to the optimal point — without risking liquid carryover.

That means less liquid, less pressure drop and less compressor work.

 

Energy savings are not theoretical

When suction pressure increases, efficiency improves immediately.

For every 1 K increase, COP improves by approx. 4%.

By controlling circulation with a vapor quality sensor, you remove the need to artificially lower suction pressure.

Direct impact of HB sensor control
  • Higher suction pressure
  • Lower compressor energy
  • Reduced pump operation
  • Improved COP
  • Lower total energy consumption

 

Reducing refrigerant charge with the same solution

When you reduce circulation, you also reduce the required refrigerant volume.

You no longer need to keep pipes and separators filled with excess liquid.

This means the same sensor-driven control reduces both energy consumption and refrigerant charge.

 

Batch processes: where sensors create immediate value

Batch systems are highly dynamic. Load changes constantly.

Without measurement, systems continue overfeeding.

With HB sensors, liquid feed is reduced automatically, slug flow is avoided and efficiency is maintained.

Sensor impact in batch systems
  • Adaptive liquid control
  • No overfilling
  • Stable riser operation
  • Shorter process time
Installation principles
  • Install after evaporator
  • Avoid top of riser
  • Ensure real liquid measurement
  • Enable true control

 

This is not a component. It is a system upgrade.

HB vapor quality sensors are not just instruments. They change how the system operates.

They turn a reactive system into a controlled system.

The hardware stays the same. The performance changes completely.

 

 

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