Barbers, a cheesemaker in the UK installed a milk-source heat pump on the process and is now saving £70,000 (about $94,000) in electrical costs per year. The system recovers the heat removed when cooling the raw milk from a cow’s body temperature to 40°F (5°C) for storage until the next step.
Unlike a plain heat exchanger or regenerator, a heat pump can boost the temperature of the heat so it can be effectively used for other process steps. The COP of such a system is often 3-5 or more, meaning the system provides several times more energy than the electricity it consumes. So, the system is providing some “udderly” good results for this plant and that’s no bull. [sorry for the cheese puns, I couldn’t resist!] – Steve Terry, DTC HVAC & Refrigeration Instructor
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