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GB/T 45465.1-2025 English PDFUS$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 45465.1-2025: Testing and calculating methods for seasonal performance factor of energy recovery ventilators for outdoor air handling - Part 1: Seasonal performance factor of sensible heating recovery Status: Valid
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GB/T 45465.1-2025: Testing and calculating methods for seasonal performance factor of energy recovery ventilators for outdoor air handling - Part 1: Seasonal performance factor of sensible heating recovery---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. ICS 91.140.30 CCSP46 National Standard of the People's Republic of China Heat recovery fresh air unit seasonal performance coefficient test and Calculation methods Part 1.Sensible heat recovery for heating Seasonal performance coefficient Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of contentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and units 2 5 Test 3 6 Calculation 5 7 Test Report 6 Appendix A (Informative) Unit Sensible Heat Supply Operation Stages and Characteristics 7 Appendix B (Normative) Outdoor temperature distribution in heating season corresponding to T5, T6 and T7 conditions in ISO 16494-1.2022 9 Appendix C (Normative) GB/T 21087-2020 Outdoor temperature distribution in heating season corresponding to heat recovery conditions 10 Appendix D (Informative) Outdoor temperature distribution of major cities in China 11ForewordThis 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. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee for Standardization of HVAC and Purification Equipment (SAC/TC143). This document was drafted by. China Academy of Building Research Co., Ltd., Jianke Environmental Energy Technology Co., Ltd., and Aituo Environmental Technology (Beijing) Co., Ltd., Zhuhai Gree Electric Appliances Co., Ltd., Beijing University of Technology, Wuxi Oulongde Technology Co., Ltd., Guangdong Midea HVAC Equipment Co., Ltd. Ltd., Daikin (China) Investment Co., Ltd., Ningbo Dongda Air Conditioning Equipment Co., Ltd., Qingdao Hisense Hitachi Air Conditioning Systems Co., Ltd., Qingdao Haier Air Conditioner Co., Ltd., Guangdong Lvdaofeng Air System Co., Ltd., ebm-papst Electric Motor (Shanghai) Co., Ltd., Zhejiang MAN Ruide Environmental Technology Co., Ltd., Zhongshan Fuwei Environmental Technology Co., Ltd., Zibo Qiyu Air Conditioning Energy Saving Equipment Co., Ltd., Hebei Na Sen Artificial Environment Co., Ltd., Changxing Group Co., Ltd., Beijing Urban Construction Installation Group Co., Ltd., Lanshe Ventilation System Co., Ltd., Chunyi Environmental Jing Technology Co., Ltd. and Shandong Haichuang Air Conditioning Co., Ltd. The main drafters of this document are. Cao Yang, Wang Lifeng, Yuan Tao, Hang Na, Hu Mingxia, Ji Ying, Yan Song, Zhang Yiwen, Min Na, Shao Anchun, Zhang Wenqiang, Wang Haisheng, Luo Weile, Shu Bangjian, Liu Xiaolei, Chen Wei, Huang Xi, Liu Xue, Luo Wenyan, Zhang Hua, Zhang Shitong, Liu Xingfei, Han Wenyan, You Xiaojing, Huang Yuhan, Li Zeqi and Zhai Hongbao.IntroductionIn 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. Heat recovery fresh air unit seasonal performance coefficient test and Calculation methods Part 1.Sensible heat recovery for heating Seasonal performance coefficient1 ScopeThis 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 referencesThe 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 performance3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 With sensible heat or total heat recovery device as the core, the fan drives the air flow to realize the recovery of exhaust air energy and the filtration of fresh air. equipment. Note. Abbreviated as “unit”. [Source. GB/T 21087-2020, 3.1] 3.2 Bypass The function of reducing the fan energy consumption by changing the air flow channel in the unit and reducing the air flow resistance in the unit. 3.3 Preheating In order to prevent the heat recovery device from frosting, the unit is equipped with a function to preheat the fresh air upstream of the heat recovery device. 3.4 The mass flow rate of outdoor air contained in the supply air when the unit is in heat recovery operation. 3.5 The ratio of the temperature difference between the supply air outlet and the fresh air inlet to the temperature difference between the return air inlet and the fresh air inlet when the unit is operating with heat recovery heating. ...... |