GB/T 45465.1-2025Testing and calculating methods for seasonal performance factor of energy recovery ventilators for outdoor air handling - Part 1: Seasonal performance factor of sensible heating recovery (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is Part 1 of GB/T 45465 "Test and calculation method for seasonal performance coefficient of heat recovery fresh air units". GB/T 45465 The following parts have been published.

--- Part 1: Seasonal performance coefficients of sensible heat recovery for heating.

Introduction

In various buildings, the use of heat recovery fresh air units to deliver fresh air to the room while recovering the energy in the exhaust air can significantly reduce the fresh air Load reduction and building energy consumption reduction have become important technical measures to achieve fresh air energy saving and even building energy saving.

The quality will directly affect the realization of fresh air energy saving effect, so its product performance evaluation also becomes very important.

GB/T 21087-2020 "Heat Recovery Air Unit" mainly proposes general requirements and performance standards for the product itself from the perspective of product quality control.

Requirements and test methods, the energy efficiency index given is the single-point energy efficiency under laboratory standard conditions. GB/T 45465 "Heat recovery fresh air fan The test and calculation method of seasonal energy efficiency coefficient of the heat recovery fresh air unit based on fresh air load is given in the "Test and calculation method of seasonal energy efficiency coefficient of the heat recovery fresh air unit based on fresh air load".

Compared with single-point energy efficiency indicators, seasonal energy efficiency indicators can better reflect the energy-saving effect of actual product applications and are a standard for fresh air energy-saving products.

GB/T 45465 is intended to consist of three parts.

--- Part 1: Seasonal performance coefficient of sensible heat recovery for heating. The purpose is to give the seasonal performance coefficient of sensible heat recovery for heating of heat recovery fresh air units. Testing and calculation methods of energy coefficient.

--- Part 2: Seasonal performance coefficient of sensible heat recovery for cooling. The purpose is to give the seasonal performance coefficient of sensible heat recovery for cooling of heat recovery fresh air units. Testing and calculation methods of energy coefficient.

--- Part 3: Annual performance coefficient of sensible heat recovery. The purpose is to give the annual performance coefficient of sensible heat recovery of the heat recovery fresh air unit. Testing and calculation methods.

1 Scope

This document specifies the test and calculation methods for the seasonal performance coefficient of the sensible heat recovery of heat recovery fresh air units.

This document applies to the testing and calculation of seasonal performance coefficients of sensible heat recovery for heating applications for the purpose of product labeling, comparison and certification.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

GB/T 21087-2020 Heat recovery fresh air unit

ISO 16494-1:2022 Heat recovery ventilators and energy recovery ventilators performance test methods Part 1: Energy-related performance

3 Terms and definitions

The following terms and definitions apply to this document.