Energy Conservation Program: Test Procedure for Compressors

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Energy 10 CFR Part 431 [EERE-2022-BT-TP-0019] RIN 1904-AF08 AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Final rule. SUMMARY: The U.S. Department of Energy (“DOE”) is amending the test procedure for compressors to correct an error and to ensure that pressure ratio is expressed in terms of absolute pressure. DOE is also correcting the formula for isentropic efficiency and specific energy consumption of the packaged compressor by incorporating a K 6 correction factor to correct for differences in pressure ratio when testing at differing elevations. Finally, DOE is amending the definition of “air compressor” to include a minor clarification and revise a typographical error. DATES: The effective date of this rule is April 2, 2025. The amendments will be mandatory for product testing starting July 16, 2025. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register on April 2, 2025. ADDRESSES: The docket, which includes Federal Register notices, public meeting attendee lists and transcripts, comments, and other supporting documents/materials, is available for review at www.regulations.gov . All documents in the docket are listed in the www.regulations.gov index. However, not all documents listed in the index may be publicly available, such as those containing information that is exempt from public disclosure. A link to the docket web p…