ISO/TR 16494-2:2019 PDF

Name: ISO/TR 16494-2:2019 — Heat recovery ventilators and energy recovery ventilators — Method of test for performance — Part 2: Assessment of measurement uncertainty of performance parameters
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Heat recovery ventilators and energy recovery ventilators — Method of test for performance — Part 2: Assessment of measurement uncertainty of performance parameters

Название (английский):

ISO/TR 16494-2:2019

Heat recovery ventilators and energy recovery ventilators — Method of test for performance — Part 2: Assessment of measurement uncertainty of performance parameters

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 43
Дата публикации:: 26 марта 2019 г.
Издание:: ISO TR 16494 edition 1 version 1
ICS:: 23.120

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Описание (английский):

This document provides guidance for practical applications of those principles in the measurement of the performance of ventilators falling under the scope of ISO 16494:2014. The references listed in the Bibliography give detailed information on the principles and theory of uncertainty as applied to measurements.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TR 16494-2:2019 is a technical report that gives practical guidance on assessing measurement uncertainty for performance tests of heat recovery ventilators (HRVs) and energy recovery ventilators (ERVs) that fall under the scope of ISO 16494:2014. It translates the theory of uncertainty into laboratory-applicable procedures, uncertainty budget templates and worked examples to help testing personnel quantify and report the reliability of ventilator performance results.

Key topics and technical requirements

Uncertainty concepts and confidence level

Defines uncertainty, confidence level (commonly 95%), and how to express test results (e.g., value ± expanded uncertainty).

Type A and Type B evaluations

Describes statistical (Type A) and judgment-based (Type B) approaches to estimating standard uncertainties, per ISO/IEC Guide 98-3.

Steps for uncertainty evaluation

Build a measurement model, identify uncertainty sources, quantify contributions, convert to common units and combine uncertainties.

Measured parameters covered

Air volume and mass flow rates, static pressure differential, temperatures, tracer gas concentrations and derived performance metrics.

Performance parameters with uncertainty procedures

Unit exhaust air transfer ratio (UEATR), net supply airflow, gross effectiveness, coefficient of energy (COE), and effective work (EW).

Tools and annexes

Informative uncertainty budget sheets (Annex A) and methods for determining indirect contributions to uncertainty (Annex B). Bibliography points to detailed theoretical references.

Practical applications and users

ISO/TR 16494-2:2019 is intended for:

Test laboratories conducting standardized performance tests for HRVs/ERVs to produce traceable, comparable results.

Manufacturers validating product performance claims and preparing technical reports for compliance or marketing.

Certification bodies and regulators assessing conformity to performance standards and tolerance claims.

R&D and quality engineers optimizing measurement systems and prioritizing uncertainty reduction efforts.

Practical benefits:

Enables consistent reporting of ventilator performance with quantified uncertainty.

Helps laboratories determine which measurement contributors dominate total uncertainty (e.g., airflow measurement vs. temperature sensors) and focus improvement efforts.

Supports credible comparison of test results across labs and ensures defensible data for compliance and product development.

Related standards

ISO 16494:2014 - Method of test for performance of heat recovery ventilators and energy recovery ventilators (normative reference).

ISO/IEC Guide 98-3 (GUM) - Guide to the expression of uncertainty in measurement (referenced for theory).

Keywords: ISO/TR 16494-2:2019, heat recovery ventilators, energy recovery ventilators, measurement uncertainty, ventilator performance testing, uncertainty budget, UEATR, coefficient of energy, gross effectiveness.

ISO/TR 16494-2:2019 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

ISO 16494:2014

Heat recovery ventilators and energy recovery ventilators — Method of test for performance

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