CSA Group CSA C500.1:24 National Standard of Canada Benchmark energy factor (BEF) assessment of industrial refrigeration systems

Preface

This is the first edition of CSA C500.1, Benchmark energy factor (BEF) assessment of industrial refrigeration systems. It supersedes CSA C500, which was published in 2018 under the title Monitoring and energy performance measurement of industrial refrigeration systems (IRS) using benchmark energy factor (BEF) concepts.

CSA C500 has been separated into two Standards: CSA C500.1, which incorporates the requirements for refrigerated spaces and processes; and CSA C500.2, which incorporates the refrigeration requirements at a facility level.

The following are the major ways in which this Standard differs from the relevant corresponding parts of CSA C500:

a) The Standard has been aligned with more recent BEF standards in terms of document structure, language, terminology, and definitions.

b) Essential load and energy determination have been simplified and user inputs have been reduced to make the Standard more user-friendly.

c) Essential performance factors used for essential load and energy have been confirmed or updated.

d) Required corrections and recommendations identified from the validation study have been incorporated.

CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of BC Hydro, Efficiency Manitoba, Electricity Canada, FortisBC, Hydro-Québec, Independent Electricity System Operator (IESO), and the Québec Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs.

This Standard was prepared by the Subcommittee on Industrial Refrigeration Systems, under the jurisdiction of the Technical Committee on Energy Efficiency of Industrial Equipment and Systems 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 Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3)  This Standard 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 Standard.

4)  To submit a request for interpretation of this Standard, please send the following information to [email protected] and include “Request for interpretation” in the subject line:

a) define the problem, making reference to the specific clause, and, where appropriate, include a graphical image;

b) provide an explanation of circumstances surrounding the actual field condition; and

c) 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 CSA Directives and guidelines governing

standardization and are available on the Current Standards Activities page at standardsactivities.csagroup.org.

5) This Standard 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 [email protected] include “Proposal for change” in the subject line:

a) Standard designation (number);

b) relevant clause, table, and/or figure number;

c) wording of the proposed change; and

d) rationale for the change.

1 Scope

1.1 Inclusions

This Standard provides requirements for benchmark energy factor (BEF) assessment intended for refrigeration systems with the following characteristics:

a) refrigerated storage and refrigerated processes for food and beverage products;

b) vapour-compression cycle that provides cooling by convection or conduction;

c) refrigerated zone volume equal to or greater than 283 m3 (10 000 ft3); and

d) process cooling capacity equal to or greater than 70 kWR (20 TR).

1.2 Exclusions

This Standard is not intended for the following systems:

a) stand-alone packaged walk-in coolers and freezer units;

b) mobile refrigeration units;

c) cryogenic freezing processes; and

d) grocery and retail facilities.

1.3 Terminology

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.