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Energy Regulations

It has been a little more than a week since my last posting where I talked about Greenchill and the need to control leaks from systems. The other major driver of a system’s impact on the environment is energy. We at Emerson are always tracking the latest energy efficiency regulations, and 2012 brought several changes for commercial refrigeration equipment including reach-ins, ice machines, walk-ins, supermarket display cases and other stationary commercial refrigeration equipment.

For example, the allowable federal minimum energy efficiency level is actually the same as the voluntary standards set by ENERGY STAR in 2001 for reach-in refrigerators and freezers. The 2010 ENERGY STAR 2.0 standards were baselined to capture the top 25 percent of energy performers. Since 2011 the EPA requires third party lab testing for the ENERGY STAR program. The new LEED for Retail rating system includes equations to calculate levels for prescriptive path LEED efficiency, based on the previous CEE Tier 2 and California Investor Owned Utilities incentive program (CAIOU).

Energy and environmental standards are constantly changing which presents a challenge for refrigeration equipment manufacturers. I would like you all to read more about these and other useful information by clicking on this link below for the Emerson white paper “Status of energy regulations for commercial refrigeration equipment”:
Emerson Climate – Status of Energy Regulations White Paper

Rajan Rajendran, Ph.D
Vice President, Engineering Services and Sustanability
Emerson Climate Technologies

5 Comments Post a comment
  1. refrigerationguy #

    ENERGY STAR just posted the presentation from the November 15, 2012 stakeholder webinar for commercial refrigerators and freezers. You can download the 33 slides from Version 3.0 of the specification is in development.

    EPA pointed out during the webcast that nearly 65% of commercial refrigerators and freezers are ENERGY STAR approved, so it is time once again to baseline the top 25% and revise the specification. EPA is also planning to unify most test conditions to be consistent with DOE test procedures. The first draft of Version 3.0 specification is expected in January 2013, but won’t become effective until April 2014.

    Here is a quick example for a typical 24 cubic foot solid-door reach-in commercial refrigerator. Maximum daily energy consumption is calculated in kilowatt hours per day.

    Pre-EEM efficiency: 0.1V+2.04 kWh/day = 4.44 kWh/day
    (same as 2010 federal minimum standard & Natural Resources Canada NRCan)

    ENERGY STAR 2.0: 0.037V + 2.200 = 3.09 kWh/day or less

    LEED efficiency: 0.06V+1.22 kWh/day = 2.66 kWh/day

    ENERGY STAR 3.0 draft: (likely in the range of 2.6-2.8 kWh/day)

    November 27, 2012
  2. refrigerationguy #

    The DOE just extended the deadline for certification of commercial refrigeration equipment to December 31, 2013. Commercial ice machines must still be certified before the end of 2012.

    Self-certification of reach-in refrigerators and freezers and ice machines is no longer good enough. This equipment must now either be tested, or the OEM can use an AEDM to estimate energy efficiency.

    While walk-in coolers and freezers are also covered, the DOE has not yet established mandatory energy efficiency levels.

    The 15-page NOPR document can be found here:

    December 2, 2012
    • refrigerationguy #

      DOE extended the compliance date for certification of ice machines to August 1, 2013 and commercial refrigeration equipment to December 1, 2013. The 21-page document:

      All covered equipment must meet the applicable energy conservation standards now; only the certification reporting date has been pushed back. Manufacturers must submit annual reports to the DOE certifying compliance of their basic models. Efficiency certifications can be supported by either testing or an AEDM, but there is still work to do to determine what exactly are the approved alternative efficiency determination methods. OEMs have already been testing and certifying their ENERGY STAR models.

      January 14, 2013
  3. refrigerationguy #

    On February 1, 2013 new ENERGY STAR Version 2.0 requirements for commercial ice machines go into effect. As of that date, the ENERGY STAR list of qualified commercial ice machines will only contain products certified to the new specifications, and all products certified to the previous specifications will be removed from the list.

    Many models of ice making heads will be dropping off the ENERGY STAR list.

    January 30, 2013
  4. refrigerationguy #

    Check out this 5 minute YouTube video on Energy Regulations Testing & Engineering Services for Air Conditioning & Refrigeration Systems:

    February 12, 2013

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