CHC-RANGE - combined heating and cooling systems
Unlike a typical reversible system, CHC systems can supply heating and cooling both simultaneously and independently. With a CHC system, only one compressor rack is necessary to cover the complete heating and cooling demand for large-scale industrial buildings.
The systems can operate as water-to-water systems delivering both heating and cooling for buildings through the plate heat exchanger evaporator and gas cooler. 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 in air-to-water operation.
In cooling only mode, the air heat exchangers are used as gas coolers. In combined mode, when both heating and cooling is required, the plate heat exchanger evaporators, installed on the rack frame, supply the required cooling, and the plate heat exchanger gas cooler supplies the heat.
Depending on whether it is the cooling or heating circuit that demands most energy, the air heat exchangers are used as gas coolers or evaporators, to boost and/or balance the system respectively. To ensure high efficiency, CO₂ is used directly in the air heat exchangers. By reversing the CO₂ flow, the air heat exchanger can both collect and reject energy to the air.
APPLICATIONS
Industrial buildings with both heating and cooling demands, separately or simultaneously
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.
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.
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