On a dairy farm, a lot of hot water is used every day to clean the milking installation or milk cooling tank. Mueller has various options for saving on energy costs with a Mueller heat recovery system. Savings can even increase to more than 1,000 pounds per year. The Fre-Heater® is a heat recovery system that uses the heat released when cooling milk.
During the cooling of the milk, recover heat released into the environment with a Mueller heat recovery system. Use the recovered heat to heat water free of charge. Water heated via a boiler can be used for cleaning the milking parlor and milk cooling tank. Because the water in the boiler reaches the desired temperature faster, you save considerably on your heating bill. Depending on your milk cooling system and the amount of milk you produce, the Fre-Heater may support all of your hot water needs.
The Fre-Heater consists of a glass-lined, enameled steel inner vessel fitted with a stainless steel Temp-plate® heat exchanger all around: both layers safeguard your potable water from coolant contamination. Depending on the circumstances, the system supplies water at about 35-45˚C. The absence of moving parts, such as a circulation pump and thermostat, makes the Fre-Heater particularly reliable and maintenance-friendly.
| Model No. | Part No. | Water Connection (in) | No. of Refrig. Circuits | Refrig. Connection Size (in) | Per Circuit Refrig. Application Capacity* | Height (in) | Diameter (in) | Approx. Shipping Weight (lb) |
| D-50 | 8823750 | ¾ MPT | 1 | 5/8 ODM | .5-4 ton R-22/507 | 53.875 | 21.75 | 225 |
| D2-50 | 8823751 | ¾ MPT | 2 | 5/8 ODM | .5-4 ton R-22/507 | 53.875 | 21.75 | 225 |
| D-80 | 8823780 | ¾ MPT | 2 | ¾ ODM | 1-5 ton R-22/507 | 58.625 | 25.25 | 320 |
| D-120 | 8823821 | 1½ FPT | 2 | ¾ ODM | 1-7.5 ton R-22/507 | 61.75 | 29.5 | 475 |
| D2-120 | 8823820 | 1½ FPT | 2 | 1 1/8 ODM | 3-15 R-22/507 | 61.75 | 29.5 | 475 |
| DH-120 | 8823823 | 1½ FPT | 2 | 1 5/8 ODM | 7-35 ton R-22/507 | 61.75 | 29.5 | 475 |
| DE-120 | 8823822 | 1½ FPT | 2 | 1 1/8 ODM | 3-15 ton R-22/507 | 61.75 | 29.5 | 475 |
*Refrigeration tonnage capacities are 30°F evaporator ton loads, not total heat of rejection tons. Pressure drop through a Fre-Heater refrigeration circuit will be approximately 15 psi at the maximum tonnage application. Pressure drop at the mid-range of tonnage application will be approximately 5 to 7 psi. The best overall refrigeration/heat recovery system efficiency is usually obtained at or below the mid-range tonnage application.
See how you can save energy with your milk cooling system.
We are proud to partner with these leaders in the dairy farming industry. From legacy farms that have thrived through multiple generations to solar cooling in Africa that is providing young children their first taste of cold milk, our equipment is impacting lives around the world.
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At Paul Mueller Company we are united by a belief that the only quality that matters is quality that works for life. With every piece of processing equipment we build, our goal is to have lasting impact. From solar milk coolers in rural Africa, to lifesaving medical technology we are making an impact across the globe.
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