CSA C296:19

National Standard of Canada

Energy performance of walk-in freezer and walk-in cooler components

Standards Update Service

CSA C296:19

February 2019

Title: Energy performance of walk-in freezer and walk-in cooler components

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National Standard of Canada

CSA C296:19

Energy performance of walk-in freezer and walk-in cooler components

®A trademark of the Canadian Standards Association, operating as “CSA Group”

Published in February 2019 by CSA Group A not-for-profit private sector organization

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ICS 97.130.20

ISBN 978-1-4883-1717-0

© 2019 Canadian Standards Association

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

CSA C296:19 Energy performance of walk-in freezer and walk-in cooler components

Contents

Technical Committee on Heating, Ventilation, Air Conditioning and Refrigeration 3

Harmonization Task Group on Walk-in Coolers and Walk-in Freezers 5

Preface 6

1. Scope 7

   
   

2. Reference publications 8

   
   

3. Definitions 8

   
   

4. Test methods 11

   1. General test requirements 11

   2. Applicable test procedure 11

      1. Display door test procedure 11

      2. Non-display door test procedure 11

      3. Panel test procedure 12

      4. Annual walk-in energy factor of refrigeration system 12

         
         

5. Test method for the measurement of energy consumption of the components of envelopes of walk-in coolers and walk-in freezers 12

   1. General 12

   2. Test measurements 12

      1. U-factor (thermal transmittance) 12

      2. Required measurements 13

   3. Calculations 13

      1. Display panels 13

      2. Display doors 14

      3. Non-display doors 16

   4. Energy consumption 18

      1. Display panel — Total daily energy consumption 18

      2. Display door 18

      3. Non-display door 19

         
         

6. Test method for the measurement of R-Value for envelope components of walk-in coolers and walk-in freezers 21

   1. General 21

   2. Test measurement 21

   3. Calculation 21

      1. R-value of a single layer panel 21

      2. R-value of multiple layers dissimilar materials 22

         
         

7. Test method for the measurement of net capacity and AWEF of walk-in cooler and walk-in freezer refrigeration systems 22

   1. General 22

   2. Test measurements 22

      
      

      February 2019 © 2019 Canadian Standards Association 1

      CSA C296:19 Energy performance of walk-in freezer and walk-in cooler components

      
      

      1. Determining AWEF and net capacity 22

      2. General modification — Test condition and tolerance 22

      3. General modification — Methods of testing 22

      4. Matched systems, single-package dedicated systems, and unit coolers tested alone 23

      5. Dedicated condensing units that are not matched for testing and are not single-packaged dedicated systems 25

      6. Hot gas defrost refrigeration systems 27

   3. Alternative efficiency determination method (AEDM) 28

      1. General 28

      2. Criteria 28

      3. Validation of an ADEM 28

         
         

8. Data to be recorded 29

   
   

9. Sampling plan 30

   1. Annual walk-in energy factor (AWEF) 30

      1. AWEF obtained by testing 30

      2. AWEF generated using AEDM 30

   2. Net capacity 30

      1. Measured 30

      2. Simulated by AEDM 30

   3. Door energy consumption 30

   4. R-value 31

      
      

10. Minimum energy performance standard and other requirements 31

    1. All walk-ins 31

    2. Walk-in cooler and freezer display doors 32

    3. Walk-in cooler and freezer non-display doors 32

    4. Walk-in coolers refrigeration systems 32

February 2019 © 2019 Canadian Standards Association 2

CSA C296:19 Energy performance of walk-in freezer and walk-in cooler components

Preface

This is the first edition of CSA C296, Energy performance of walk-in freezer and walk-in cooler components.

This Standard specifies the methods used to measure the energy consumption of walk-in freezers and walk-in coolers components.

This Standard has harmonized with testing and evaluating the energy efficiency of walk-in freezers and walk-in coolers specified in the United States Department of Energy (DOE) publication Title 10 Code of Federal Regulations (CFR), Part 431, subpart R – Walk-in Coolers and Walk-in Freezers, as published as of December 28, 2016, per the Canada-U.S. Regulatory Cooperation Council (RCC) initiative.

CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada (NRCan), BC Hydro, Manitoba Hydro, Hydro Québec, Nova Scotia Department of Energy, EfficiencyOne, and Sask Power.

This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

This Standard was prepared by the Harmonization Task Group on Walk-in Coolers and Walk-in Freezers, under the jurisdiction of the Technical Committee on Heating, Ventilation, Air Conditioning and Refrigeration and the Strategic Steering Committee on Performance, Energy Efficiency, and Renewables, and has been formally approved by the Technical Committee.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Notes:

1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2. Although the intended primary application of this Supplement is stated in its Scope, it is important to note that it remains the responsibility of the users of the Supplement to judge its suitability for their particular purpose.

3. This Supplement was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Supplement.

4. To submit a request for interpretation of this Supplement, please send the following information to inquiries@csagroup.org and include “Request for interpretation” in the subject line:

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.

      Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.

5. This Supplement is subject to review within five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiries@csagroup.org and include “Proposal for change” in the subject line:

   1. Standard designation (number);

   2. relevant clause, table, and/or figure number;

   3. wording of the proposed change; and

   4. rationale for the change.

February 2019 © 2019 Canadian Standards Association 6

CSA C296:19 Energy performance of walk-in freezer and walk-in cooler components

CSA C296:19

Energy performance of walk-in freezer and walk-in cooler components

1 Scope

1.1

This Standard applies to walk-in coolers and walk-in freezers (i.e., an enclosed refrigerated storage space that can be walked into) having a total chilled storage area of less than 278.71 m2 (3000 ft2).

1.2

This Standard does not apply to commercial refrigeration appliances covered under CAN/CSA-C657.

1.3

Energy performance evaluation of a walk-in cooler and walk-in freezer is done by evaluating energy performance of the principal components individually that make up a walk-in. This Standard applies to the following walk-in cooler and walk-in freezer components:

1. display doors;

2. non-display doors;

3. non-display panels; and

4. refrigeration systems.

1.4

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.5

The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

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