Smarter Control of Pumps, Fans and HVAC.

Where We Reduce Energy Use—and Operating Cost.

Many auxiliary systems are designed for peak conditions but operate at full or unnecessarily high speed during normal service. eMarine measures actual demand and controls pumps and fans accordingly—while maintaining required temperatures, airflow, pressure and system safeguards.

Proven across cargo fleets, ferries and cruise ships — wherever pumps, fans and HVAC run on auxiliary power.

Typical systems we optimize

• Cooling Water

  Cooling pumps are commonly sized for high seawater temperatures and maximum machinery load. We regulate pump speed based on actual temperatures and cooling demand, reducing electrical consumption without compromising cooling performance.

• Engine Room Ventilation

  Supply and extract fans are adjusted to actual temperature and operating conditions instead of running continuously at fixed speed. This reduces fan power while maintaining the required engine-room environment.

• HVAC

  Pumps and fans are controlled based on actual thermal and ventilation demand. This reduces unnecessary circulation and airflow while maintaining stable indoor conditions and comfort.

The exact saving potential depends on the installed equipment, system design, operating profile and available control margins. eMarine assesses each vessel and prioritizes the measures with the strongest technical and commercial case.

Technical Example

Demand-Based Control of a Cooling-Water System.

This example shows how the eMarine Controller uses temperatures and operating data to control variable-frequency drives on seawater and LT pumps. The existing IAS remains connected for start and stop commands, interlocks and alarms, while operating data is sent to eMarine Cloud for monitoring and verification.

1. 01

   Measure Actual Demand

   Temperatures and operating conditions are measured continuously at selected points in the system.

2. 02

   Control Automatically

   The eMarine Controller adjusts seawater and LT pump speeds through variable-frequency drives.

3. 03

   Monitor and Verify

   Operating data and system performance are monitored in eMarine Cloud with support from eMarine's Remote Operations Center.

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Engineering Improvements Beyond eMarine Control™.

eMarine also delivers targeted upgrades, balancing and integration services that improve HVAC performance, reduce energy use and provide better operational visibility onboard.

• Rotary Heat Exchangers

  Enthalpy wheels

  We upgrade existing units to variable-speed operation or replace worn-out wheels. Replacement can typically be completed in service within one day, subject to access and project scope.

  OutcomeImproved heat-recovery performance, lower HVAC energy demand and limited operational disruption.

• Cabin Airflow Balancing

  We measure and balance supply and extract air so that each cabin receives the required airflow. This improves comfort—particularly in crew accommodation—and can reduce unnecessary fan energy where the total airflow can be lowered.

  OutcomeBetter comfort, more even temperatures and lower ventilation energy use.

• HVAC Water-System Balancing

  Chilled-water systems must distribute cooling evenly to all air-handling units and fan-coil units. Poor balance leaves parts of the system short of flow and can result in higher pump or fan speeds to achieve the required cooling.

  We measure and balance the system so that cooling capacity is distributed where it is needed.

  OutcomeLower pump and fan energy use, more stable temperatures and improved onboard comfort.

• Chiller Integration and Performance Visualization

  We integrate chiller operating data with the HVAC control system and forward it to eMarine Cloud. This creates a consolidated view of chiller status, loading and performance, supporting optimization, fault detection and continuous follow-up.

  Chiller→HVAC control system→eMarine Cloud

  OutcomeImproved visibility, earlier detection of performance issues and better control of overall HVAC efficiency.