Heat for sustainable shrimp farming
With a CTAexklusiv industrial heat pump, the energy supplier AEW Energie AG uses the waste heat from salt production at the Riburg salt mine for the Rheinfelden Rüchi heating network. A major consumer of the heat is the nearby SwissShrimp AG shrimp farm.
Shrimps from the shrimp farm in Rheinfelden (Photo: SwissShrimp AG)
Salt and waste heat "from next door" for shrimp farming
Modern large heat pumps are powerful heat suppliers that can easily provide temperatures of 80 °C and more. And if a heat source of more than 30 °C can be utilised, they are true efficiency champions. This also benefits the young, innovative company SwissShrimp AG, which produces high-quality shrimp for the Swiss market in Rheinfelden. Not only does it use the salt from the neighbouring Riburg salt works of the Swiss salt works, the valuable (waste) heat generated during salt production is just as important.Heat network for sustainable shrimp
The heat supply is ensured by the Rheinfelden Rüchi heating network operated by energy supplier AEW Energie AG. This has been utilising the waste heat from salt production for over ten years. SwissShrimp AG is a new customer for the "salt heat". AEW Energie AG therefore decided to expand the heating centre in 2018: a customised heat pump developed and produced in Switzerland delivers an output of more than 700 kW with a COP of 3.73.
Heating network Rheinfelden Rüchi
Heat source: Mainly waste heat from Swiss salt mines
Basic expansion: 2007-2009
Heat output: 8.4 megawatts (MW)
Heat requirement per year: 18,400 megawatt hours (MWh)
Heat energy coverage from salt works per year: approx. 13,000 MWh
CO2 savings: 2,600 tonnes per year
Savings in heating oil: 1 million litres per year
Guarantee for uninterrupted heat supply
Salt production generates high-temperature waste heat (85 °C) and low-temperature waste heat (30 °C). The high-temperature waste heat can be utilised directly. The 30 °C low-temperature waste heat is raised to the required 85 °C in the heating centre using the CTAexclusive industrial heat pump. The advantage of the heat pump is that it provides the necessary heat even when the high-temperature waste heat is not available. It therefore guarantees an uninterrupted heat supply.Heat pump advances into higher "temperature spheres"
CTA's industrial heat pump emphasises the potential of heat pump technology for industrial and commercial applications, for entire sites and heating networks that rely on flow temperatures of more than 80 °C. The higher the temperature of the heat source, the greater the potential. The higher the temperature of the heat source, the more efficiently the heat pump works. With exemplary key performance indicators (COP of 3.5 including the auxiliary units), the system in Rheinfelden demonstrates that a sustainable, CO2-free energy future is possible in the food industry thanks to renewable heat sources.
The heat pump in use
709 kW heating output
COP of 3.73
Refrigerant R-1234ze (HFO)
Customised CTAexclusive
Contributors
Planning: Baltensperger Energie GmbH
Energy provider: AEW Energie AG
Heat pumps and system supplier: CTA AG, Münsingen
Customised industrial heat pump, developed and produced in Münsingen, Bern.
CTAexclusive - customised solutions
No matter how demanding - we transform our customers' wishes and needs into concrete solutions. We plan, build and test customised chillers and heat pumps in Münsingen. Our products are available with an output range between 6 and 5000 kW, installed indoors or outdoors, water or air-cooled and with refrigerants such as propane, HFO or ammonia.
In safe hands
Anyone who buys a CTA heat pump has opted for a high-quality and durable product. Our service technicians provide professional care and maintenance to ensure that the heat pump continues to deliver optimum performance, runs smoothly and operates for a long time with the lowest possible maintenance costs. That's why we offer customised maintenance contracts for all refrigerant-carrying systems we supply. Whether it's a scheduled maintenance contract, a flat-rate maintenance contract or our tried-and-tested CTAprotect all-round protection with a warranty extension of up to 15 years from commissioning.
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