To improve energy efficiency and reduce operational costs.
Overview
It is recommended to implement a heat recovery unit (HRU) to capture and utilize the waste heat generated by milk cooling systems. This recovered heat can then be used to preheat water for other systems such as sanitizing milking equipment. Typically, heat recovery is achieved through an insulated water tank that captures heat during compressor operation, or it can occur through a continuous flow of water. Implementing an HRU not only enhances energy efficiency but also reduces operational costs by repurposing otherwise wasted heat.
References:
NRCS Practice Standard: Energy Efficient Agricultural Operation (374)
Environmental Impact
- Reduced GHG emissions (9.7 MTCO2e/year – Newtrient, LLC, 2025)
- Reduced energy consumption and associated GHG emissions
- Reduced heat waste
- Enhanced energy recovery
- Improved efficiency in heating processes and applications
Reference: Newtrient GHG Reduction Calculator – Hot Water Heat Recovery
Greenhouse Gas Reduction
Estimated Cost
Scenario Unit: Each
Scenario Typical Size: 1
Total Cost/Unit: $6,355.82/unit
Reference: NRCS Practice Standard and Scenario: CPS 374 Energy Efficient Agricultural Operation Scenario #17 – Compressor Heat Recovery: https://www.nrcs.usda.gov/sites/default/files/2024-11/fy25-wa-scenarios.pdf, p. 482.
Financial Considerations
Cost Savings: Implementing an HRU can lead to substantial cost savings by significantly reducing energy consumption and utility expenses through the efficient reuse of waste heat.
Timeline
Short
Dependency / Prerequisite
Prerequisites:
- Adequate space and infrastructure must be available for installing and operating the heat recovery unit, including necessary piping and electrical connections.
- An energy audit may be needed to assess the feasibility and potential savings of implementing heat recovery on the compressors.