Walk-in coolers and freezers – May 2016

Technical bulletin on developing the standard

Webinar - June 2016

On April 30, 2016, Natural Resources Canada's Office of Energy Efficiency issued a Notice of Intent to align Canada’s EnergyEfficiency Regulations (the Regulations) for walk-in coolers and freezers (WICF) with standards in the United States. This technical bulletin has been released to initiate the consultation process and to collect stakeholder views on the requirements being considered for WICF.

Input received during this stage of the process will inform the development of the Amendment 14 proposal.  In addition, the department will undertake a cost-benefit analysis using the best-available Canadian market data to assess the economic and environmental impacts of aligning these standards and to ensure Canadian consumers and businesses benefit from its implementation.

The Government of Canada intends to pre-publish a regulatory proposal in the Canada Gazette, Part I within approximately one year of this bulletin.

Background

WICF are not currently regulated in Canada. In 2007, the U.S. Energy Independence and Security Act of 2007 (EISA) introduced mandatory requirements that applied to all new WICF manufactured on or after January 1, 2009. On June 3, 2014 the U.S. Department of Energy (U.S. DOE) introduced mandatory requirements for WICF doors and WICF refrigeration systems. The minimum energy performance standards (MEPS) for WICF refrigeration systems were challenged by the industry and, after court settlement they were amended on November 12, 2015, vacating 6 MEPS for low temperature dedicated condensing units and multiplex condensing units.

Natural Resources Canada (NRCan) is proposing to introduce standards for WICF components in order to align with MEPS and effective dates in the U.S.

DOE is currently undertaking a rulemaking to consider amended energy conservation standards for the vacated classes of WICF refrigeration systems. If the final rule is issued before the publication of this amendment, NRCan will consider including them.

Product description

Walk-in coolers and freezers are enclosed storage spaces that can be walked into. WICFs temporarily store refrigerated or frozen food or other perishable goods and are used primarily in the food service and food sales industry. Walk-in coolers operate above 32°F and at or below 55°F, and walk-in freezers operate at or below 32°F. WICFs covered by the regulations have a total chilled storage area of less than 3,000 square feet, and do not include products designed and marketed exclusively for medical, scientific, or research purposes.

Energy performance test procedure

NRCan is proposing that the following energy performance test procedure be referenced:

  • United States Code of Federal Regulations (CFR), Title 10, Part 431, Subpart R, 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in freezers.

Energy performance standard

Table 1 – MEPS for walk-in cooler and freezer panels
Class descriptor Class Minimum R-value
(h-ft2-°F/Btu)
Structural panel, medium temperature (Coolers) SP.M 25
Structural panel, low temperature (Freezers) SP.L 32
Floor panel, low temperature (Freezers) FP.L 28

 

Table 2 – MEPS for walk-in cooler and freezer display doors
Class descriptor Class Equations for maximum energy consumption
(kWh/day)*
Display door, medium temperature (Coolers) DD.M 0.04 × Add + 0.41
Display door, low temperature (Freezers) DD.L 0.15 × Add + 0.29

*Add represents the surface area of the display door in ft2.

Table 3 – MEPS for walk-in cooler and freezer non-display doors
Class descriptor Class Equations for maximum energy consumption
(kWh/day)*
Passage door, medium temperature (Coolers) PD.M 0.05 × And + 1.7
Passage door, low temperature (Freezers) PD.L 0.14 × And + 4.8
Freight door, medium temperature (Coolers) FD.M 0.04 × And + 1.9
Freight door, low temperature (Freezers) FD.L 0.12 × And + 5.6

*And represents the surface area of the non-display door in ft2.

Table 4 – MEPS for walk-in cooler and freezer refrigeration systems
Class descriptor Class Equations for
minimum AWEF
(Btu/W-h)
Dedicated condensing, medium temperature,
indoor system, <9,000 Btu/h capacity
DC.M.I, <9,000 5.61
Dedicated condensing, medium temperature,
indoor system, ≥9,000 Btu/h capacity
DC.M.I, ≥9,000 5.61
Dedicated condensing, medium temperature,
outdoor system, <9,000 Btu/h capacity
DC.M.O, <9,000 7.60
Dedicated condensing, medium temperature,
outdoor system, ≥9,000 Btu/h capacity
DC.M.O, ≥9,000 7.60
Dedicated condensing, low temperature,
indoor system, <9,000 Btu/h capacity
DC.L.I, <9,000 Vacated. To be confirmed
Dedicated condensing, low temperature,
indoor system, ≥9,000 Btu/h capacity
DC.L.I, ≥9,000 Vacated. To be confirmed
Dedicated condensing, low temperature,
outdoor system, <9,000 Btu/h capacity
DC.L.O, <9,000 Vacated. To be confirmed
Dedicated condensing, low temperature,
outdoor system, ≥9,000 Btu/h capacity
DC.L.O, ≥9,000 Vacated. To be confirmed
Multiplex condensing, medium temperature MC.M Vacated. To be confirmed
Multiplex condensing, low temperature MC.L Vacated. To be confirmed

AWEF: Annual Walk-in Energy Factor

DOE is currently undertaking a rulemaking to consider amended energy conservation standards for other classes of WICF refrigeration systems. If the final rule is issued before the publication of this amendment, NRCan will consider including them.

Effective dates

These Regulations will come into force six months after the date of publication in the Canada Gazette, Part II.

NRCan is proposing that the standards for WICF panels in Table 1, and for WICF Doors in Tables 2 and 3 willapply to products manufactured on or after June 5, 2017. The effective date for the non-vacated standards for WICF refrigeration systems in Table 4 will be applied to products manufactured as of January 1, 2020The MEPS and the effective date for the vacated standards in Table 4 will be identified at a later date, once the U.S. DOE finalizes the rulemaking.

Labelling requirements

NRCan is not proposing a mandatory label for WICF at this time.

Verification requirements

NRCan proposes that these products carry a third party verification mark indicating that the product meets the MEPS and that information to be reported has been verified.

The verification mark is the mark of a Standards Council of Canada accredited certification body that operates an energy efficiency certification program for the product.

Reporting requirements

Energy efficiency reports

The energy efficiency report required for WICF will include the following product specific information:

  • name of product (i.e. WICF panels, doors, refrigeration system)
  • brand name
  • model number
  • name of the manufacturer
  • name of the certification body whose verification mark will be affixed to the product
  • for WICF doors:
    • door class
    • kWh/day consumed by the door 
    • surface area of the door
  • for WICF panels:
    • panel class
    • R-value of the insulation.
  • for WICF refrigeration systems:
    • refrigeration system class
    • AWEF

The Regulations apply to products imported or shipped inter-provincially for sale or lease in Canada. This report must be submitted, by the dealer, to NRCan before the product is imported into Canada or traded inter-provincially for the first time.

Import reports

A dealer who imports these products into Canada must include the following information on the customs release document:

  • name of product
  • model number
  • brand name
  • address of the dealer importing the product
  • purpose for which the product is being imported (i.e. for sale or lease in Canada without modification; for sale or lease in Canada after modification to comply with energy efficiency standards; or for use as a component in a product being exported from Canada)

Comments invited

The purpose of this bulletin is to provide stakeholders with technical detail required to comment on the requirements under consideration for WICF.

Additional information on Canada’s Energy Efficiency Regulations including a current list of Standards Council of Canada accredited certification bodies can be found in the Department’s website.

We welcome your comments by June 30, 2016. All correspondence should be forwarded to:

Office of Energy Efficiency

Natural Resources Canada
580 Booth Street
Ottawa, ON  K1A 0E4
E-mail: nrcan.equipment.rncan@canada.ca