Case Study
Arran Dairies
EXCELSIOR Water Heating by Fabdec makes sustainability its key priority. In 2023 we specified 2 SPAR-HEAT Heat Recovery Vessels to Arran Dairies on the Isle of Arran, Scotland.
Williams Refrigeration, their partner, knew the energy saving potential for the refrigeration circuits used in ice cream production and turned to Fabdec’s experience and expertise for a solution.
The answer was our powerful dual and triple coiled vessels, which could turn Arran Dairies’ wasted energy into hot water essential for cleaning tanks/sinks and sterilization washdown duties whilst saving considerably on their energy consumption.
Matt Dobson, of Aaran Dairies says, “The results are staggering. Our hot water usage was always quite high, it’s an essential part of our maintenance & hygiene routine. Since commissioning in June 2023 we have witnessed a 50% decrease in our energy usage”.
Not only has this year-on-year cost saving given an attractive payback to the project, it has also enhanced Arran Dairies’ operational efficiency in the cleaning and sterilization processes. It has also played a significant part in reducing their carbon footprint.
So how does it work? The illustration below is for a simple single coil vessel. However, the complex and rapid cooling refrigeration set-up at Arran Dairies called for 2 separate systems, with multiple coils, as also illustrated below.
Arran System No. 1
Each 9KW THR system will generate approx. 65L of hot water per hour. Only one 9kW freezer unit will run at any one time
Running for 18 hours per day equals 1170l
Specified: HSPD-1125-C2-SS | 1125L SPAR HEAT TWIN COIL STAINLESS
Arran System No. 2
Chiller-1 3.7kW THR – approx. 28L of hot water per hour
Chiller-2 3.7kW THR – approx. 28L of hot water per hour
Pull down freezer 6kW THR – approx. 45L of hot water per hour
Only one 3.7kW chill at any one time so maximum load is 9.7kW.
At 18 hours runtime mean usage of 909 litres of hot water.
Specified: HSPD-0840-C3-SS | 840L SPAR HEAT TRIPLE COIL STAINLESS
Refrigerant: chillers R448a | freezer and pull down freezer R452A
Both the customer and Fabdec are pleased with the results. They highlight the value of investing in sustainable solutions and show how innovative technologies can enhance operations. It’s a win-win scenario that not only supports a business’ financial objectives but also aligns with broader sustainability goals.