ISO/TC 86/SC 6/WG 10 - Energy recovery ventilators

This document specifies the testing and calculating methods for sensible heating recovery seasonal performance factor of heat recovery ventilators (HRV) covered by ISO 16494-1. This document also specifies the test conditions and the corresponding test procedures for determining the sensible heating recovery seasonal performance factor of HRV and is intended for use only in marking, comparison, and certification purposes. For the purposes of this document, the rating conditions are those specified in ISO 16494-1 and in Annex B. The procedures of this document may be used for other temperature conditions.

This document specifies a method of testing the ventilation and energy related performance of heat recovery ventilators (HRVs) and energy recovery ventilators (ERVs) that do not contain any supplemental heating (except for defrost), cooling, humidification, or dehumidification components. Exchanger types of HRVs and ERVs are a) fixed-plate exchangers (also known as recuperators), b) rotary exchangers, including heat wheels and total energy wheels (also known as regenerators), and c) heat pipe exchangers using a heat transfer medium, excluding those using mechanical pumping, This document does not provide a method for measuring the response of exchangers to the formation of frost.

This document specifies methods for testing and characterizing the performance of air-to-air heat/energy exchangers when used as devices to transfer heat or heat and water vapor between two airstreams used in ventilation systems. It also specifies methods to characterize the performance of exchangers for use in calculation of the energy performance of buildings. This document is applicable to: — fixed-plate exchangers (also known as recuperators), — rotary exchangers, including heat wheels and total energy wheels (also known as regenerators), — heat pipe exchangers using a heat transfer medium, excluding those using mechanical pumping. This document does not provide a method for measuring the response of exchangers to the formation of frost.

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.

ISO 16494:2014 prescribes a method of testing the ventilation and energy related performance of heat recovery ventilators (HRVs)and energy recovery ventilators (ERVs) that do not contain any supplemental heating (except for defrost), cooling, humidification or dehumidification components.