H-RANGE - heat pumps

The Fenagy H-range heat pumps reach capacities from 500 kW to 3,000 kW heat per rack. All the heat pumps are designed to deliver optimal performance in accordance with customer-specific operation needs. The entire range is available as both water-sourced and air-sourced heat pumps.

The H-range uses the natural refrigerant CO₂, which is ideal for applications with heat-sink return temperatures below 45°C and supply temperatures up to 85°C. The heat pumps are typically used for applications such as district heating or heating of larger buildings, but they are also suitable for industrial processes, the food industry, green houses, data centres, logistics centres, offices, hospitals and HVAC in general.

APPLICATIONS

District heating · Heat networks
Industrial processes · Food industry
Green houses · Data centres
Logistics centres · HVAC in general
Offices and hospitals

Factory-built CO2 heat pump system on rack, including control panel. Capacity: 600 kW.
Factory-built CO2 heat pump system on rack, including control panel. Capacity: 1200 kW.
Factory-built CO2 heat pump system on rack, including control panel. Capacity: 1800 kW.
Factory-built CO2 heat pump system on rack, including control panel. Capacity: 3000 kW.

Easy installation with enclosure

All the heat pumps in the H-range can be delivered in an industrial walk-in enclosure, which is a fully approved machine room with lighting, ventilation, CO₂ alarm and sound dampening panels. The enclosure is available in any colour and with extra space for installation of an electrical supply panel, pumps, valves on the water circuit, etc.

Enclosures are usually delivered with a self-supporting concrete foundation, so only a levelled sand pad is needed on site for the installation.

Open industrial enclosure with a Fenagy heat pump inside. The enclosure is a fully approved machine room.

Control systems

The complete range uses a standard Siemens PLC controller, and Fenagy has developed its own PLC algorithms for the most essential functions to ensure optimal control and monitoring. Our PLC solutions can communicate with most of the platforms the customer will need to communicate with. The onboard HMI panel offers direct monitoring of the system and its operating conditions. Furthermore, our PLC solutions support several communication protocols and can integrate with the overall SCADA system.

For an air-sourced heat pump, it is essential to have an efficient and robust defrost system that can secure heat production, regardless of weather conditions. Furthermore, unique features have been developed enabling the heat pump to restart automatically after an emergency stop and even after heavy snowfall.

For all systems, Fenagy aspires to minimise start-up and shutdown times, enabling the system to help balance the electrical grid in a future with an increasing demand for such functions. Last, but not least, the system can deliver high supply temperatures, and Fenagy is continuously pushing the boundaries with new functions and features in the PLC development.

Diagram showing system communication of a Fenagy heat pump or chiller installation.
Automation engineer adjusting settings on a PLC controller of a Fenagy heat pump system.

Technical specifications &
key features

Technical specifications table of Fenagy H-range CO2 heat pumps

  • Patented ejector technology for optimisation of capacity and COP

  • Fast start and stop for balancing the electrical grid

  • Efficient and robust defrosting of air-sourced heat pumps

  • Internal heat exchangers and receiver, designed for heat pump operation

  • Industrial design with stainless steel piping

  • Available as water-to-water and air-to-water

  • Water pump, energy meter and various valves can be integrated on the rack

  • PLC control of the entire heat pump, including optimised air-source evaporators

We only use natural refrigerants

Diagram showing temperature ranges of natural refrigerants CO2 (R744, Isobutane (R600a) and Propane (R290)

R744 - CO₂

APPLICATIONS: District heating, heat networks, industrial processes, food industry, green houses, data centres, logistics centres, offices, hospitals and HVAC in general

  • Natural refrigerant with a wide temperature range

  • Non-toxic and non-flammable

  • Excellent choice for air-sourced heat pumps for direct use in the energy collectors and with high delta T on the heat sink side

  • Optimal for medium-temperature water-sourced heat pumps, chillers and combined heating and cooling applications

  • Medium-high temperature level on heat sink (up to 85°C supply temp) with high delta T on the heat sink (dT: 30-40K)

R600a - Isobutane

APPLICATIONS: Heat networks, Biogas, PtX, geothermal, carbon capture, CO₂ heat pump sub-cooler, industrial processes and food industry 

  • High-temperature natural refrigerant

  • Suitable for water-sourced heat pumps and chillers

  • Can be used in a wide temperature range on both the heat source and heat sink sides

  • Robust operation under various operating conditions

  • Use of efficient screw compressors and high COP of the cycle

  • High temperature level on heat source (up to 40°C evap. temp)

  • High temperature level on heat sink (up to 95°C supply temp) and ideal with low delta T on heat sink - serial coupling on water side at higher delta T 

R290 - Propane

APPLICATIONS: Heat networks, industrial processes, food industry, data centres, offices, hospitals and HVAC in general

  • Low-temperature natural refrigerant

  • Suitable for lower temperature water-sourced heat pumps and chillers

  • Low temperature level on heat source (down to -30 °C evap. temp)

  • Medium temperature level on heat sink (up to 75 °C supply temp)

  • Ideal with low delta T on sink and heat source

  • High refrigeration capacity ensures compact solutions with small footprint

  • Can be combined with isobutane in serial hydraulic couplings

Grren icon, which says Natural Refrigerants only.

The most visionary CO₂ heat

pump systems in the world