HEAT PUMPS
CHILLERS
HEAT PUMPS, CHILLERS
& COMBINED
CHILLERS, HEAT PUMPS
& COMBINED
HEAT PUMPS, CHILLERS
& COMBINED
COMBINED HEAT
& COOLING
CHC-RANGE - combined heating and cooling systems
Unlike a typical reversible system, CHC systems can supply heating and cooling both simultaneously and independently. Only one compressor rack is necessary to cover the complete heating and cooling demand for large industrial buildings.
To ensure high efficiency, CO₂ is used directly in the air heat exchangers. By reversing the CO₂ flow, the air heat exchangers can both collect energy from and reject energy to the air.
Heating only
When only heating is needed, the system operates as a typical air-to-water heat pump, using the air heat exchangers as energy collectors. CO₂ gas is used for defrosting the air heat exchangers.
Cooling only
In cooling only mode, the plate heat exchanger evaporators supply the cooling, and the air heat exchangers are used as gas coolers.
Combined heating and cooling
When both heating and cooling are required, the system operates as a water-to-water system. The plate heat exchanger evaporators, installed on the rack frame, supply the cooling, and the plate heat exchanger gas cooler supplies the heat.
The air heat exchangers balance the system – if the cooling demand is higher, they act as gas coolers and reject surplus heat, if the heating demand is higher, they act as evaporators and collect additional energy.
APPLICATIONS
Industrial buildings with both heating and cooling demands, separately or simultaneously
Easy installation with a FENhouse
All heat pumps in the CHC-range can be delivered in a FENhouse – a factory-built, turnkey concept where the heat pump is installed in a sound-insulated enclosure designed as a fully approved machine room, complete with lighting, ventilation and CO₂ alarm.
The benefits are numerous. FENhouse arrives ready for connections, making on-site installation ultra-fast, and its compact design saves space. As a new building is not needed, the authority approval process is also shorter, and the overall cost of the installation is reduced.
FENhouse is usually delivered with a self-supporting concrete foundation, so only a levelled sand pad is needed on site for installation. It is flexible by design and can be delivered with extra space for an electrical supply panel, pumps, valves on the water circuit, etc. and is available in various designs, ensuring aesthetics are always prioritised.
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. The onboard HMI panel offers direct monitoring of the system and its operating conditions. Our PLC solutions are compatible with most customer platforms, support several communication protocols and can integrate with the overall SCADA system.
If the overall installation consists of multiple units, a master controller – FENmaster – is installed to coordinate operation between them. FENmaster offers a wide range of functions and can, among other things, handle grid balancing services and the grouping of multiple heat pumps, chillers and electric boilers.
All Fenagy systems are built with cybersecurity as a cornerstone. Among other measures, the systems are protected by network segmentation and firewalls, ensuring that each heat pump, chiller or electric boiler is always separated from other devices on the network and protected against unauthorised access, both inbound and outbound.
For an air-source 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.
Technical specifications &
key features
Simultaneous heating and cooling
Suitable for large industrial buildings where both heating and cooling is needed
Only one system for one building
Direct CO₂ air heat exchangers used as evaporator and gas cooler
Patented ejector technology for optimisation of capacity and COP
Efficient and robust CO₂ gas defrosting of air-sourced evaporators
Industrial design with stainless steel piping
Fast start and stop for balancing the electrical grid
Internal heat exchangers and receiver designed for the purpose by Fenagy
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
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
The most visionary CO₂
combined heating and
cooling systems in the world