前言:这是CSA C439《热/能量回收通风机性能评定的实验室试验方法》的第五版。它取代了2009年、2000年、1988年和1985年出版的之前版本。本标准适用于成套热回收/通风机。CSA承认，本标准的制定部分得益于加拿大自然资源部（NRCan）、卑诗省水电、马尼托巴省水电、安大略省能源和基础设施部、加拿大电力协会、独立电力系统运营商（IESO）、新斯科舍省能源部、EfficiencyOne和萨斯克电力公司的财政支持。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。 CSA集团已将其作为加拿大国家标准发布。范围:1.11.1.1本标准适用于由工厂组装元件（包括风扇或鼓风机）组成的成套热/能量回收通风机（HRV/ERV），其中热量或热量和水分在两个隔离气流之间传递。1.1.2本标准规定了评定HRV/ERV表观有效性和热回收效率的实验室试验方法和程序。还包括确定空气流动能力和空气从一股气流泄漏到另一股气流的程序。1.1.3使用制冷循环或循环流体在两个隔离气流之间传递热量的包装HRV/ERV可使用本标准进行评级。 1.2在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）- 必须）定义其应用程序。

Preface:This is the fifth edition of CSA C439,Laboratory methods of test for rating the performance of heat/ energy-recovery ventilators. It supersedes the previous editions, published in 2009, 2000, 1988, and 1985.This Standard applies to packaged heat/energy-recovery ventilators.CSA 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, Ontario Ministry of Energy and Infrastructure, the Canadian Electricity Association, Independent Electricity System Operator (IESO), Nova Scotia Department of Energy, EfficiencyOne, and Sask Power.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.Scope:1.11.1.1This Standard applies to packaged heat/energy-recovery ventilators (HRVs/ERVs) that consist of factory- assembled elements, including fans or blowers, in which heat or heat and moisture are transferred between two isolated airstreams.1.1.2This Standard specifies laboratory methods of test and procedures for rating the apparent effectiveness and heat-recovery efficiency of HRVs/ERVs. Procedures for determining air movement capabilities and the leakage of air from one airstream to another are also included.1.1.3Packaged HRVs/ERVs that use a refrigeration cycle or circulating fluid to transfer heat between two isolated airstreams may be rated using this Standard.1.2In 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.