HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

JJF 1858-2020 English PDF

US$789.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1858-2020: Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Air-Enthalpy Test Method
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJF 1858-2020English789 Add to Cart 6 days [Need to translate] Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Air-Enthalpy Test Method Valid JJF 1858-2020

PDF similar to JJF 1858-2020


Standard similar to JJF 1858-2020

JJF 1576   JJF 1366   JJF 1187   JJF 2019   JJF 1908   JJF 1857   

Basic data

Standard ID JJF 1858-2020 (JJF1858-2020)
Description (Translated English) Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Air-Enthalpy Test Method
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A54
Word Count Estimation 34,332
Date of Issue 2020-09-11
Date of Implementation 2021-03-11
Regulation (derived from) Announcement No. 40 (2020) of the State Administration for Market Regulation
Issuing agency(ies) State Administration for Market Regulation

JJF 1858-2020: Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Air-Enthalpy Test Method


---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.
Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Air-Enthalpy Test Method National Metrology Technical Specifications of the People's Republic of China Calibration specification for air-conditioner air enthalpy method energy efficiency measuring device 2020-09-11 released 2021-03-11 implementation Issued by the State Administration for Market Regulation Air-conditioner air enthalpy method energy efficiency measuring device Calibration specification Focal point. National Technical Committee on Energy and Resources Measurement Energy Efficiency Labeling and Measurement Sub-Technical Committee Main drafting unit. China Institute of Metrology Shanghai Institute of Metrology and Testing Technology Fujian Institute of Metrology Participated in the drafting unit. China Electrical Equipment Research Institute Co., Ltd. Hefei General Machinery Research Institute Co., Ltd. Shanghai Haipu Environmental Equipment Co., Ltd. Guangzhou Lanshi Technology Development Co., Ltd. This specification entrusts the National Energy and Resources Metrology Technical Committee Energy Efficiency Labeling and Metrology Sub-Technical Committee to be responsible for the interpretation The main drafters of this specification. Zhang Haiyun (China Institute of Metrology) Mao Xiaochen (Shanghai Institute of Metrology and Testing Technology) Zhang Jieliang (Fujian Institute of Metrology) Participating drafters. Li Heng (China National Electrical Equipment Research Institute Co., Ltd.) Yang Zhen (Hefei General Machinery Research Institute Co., Ltd.) Li Zhengtao (Shanghai Haipu Environmental Equipment Co., Ltd.) Tang Zheng (Guangzhou Lanshi Technology Development Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and definitions (1) 4 Overview (2) 5 Measurement characteristics (2) 5.1 Temperature measurement system (2) 5.2 Pressure measurement system (3) 5.3 Air nozzle (3) 5.4 Electrical parameter measurement system (4) 5.5 Thermocouple signal measurement system (4) 5.6 Humidity measurement system(4) 5.7 Flow measurement system (4) 5.8 Cooling (heating) capacity(4) 6 Calibration conditions (5) 6.1 Environmental conditions (5) 6.2 Equipment for calibration (5) 7 Calibration items and methods (6) 7.1 Calibration items (6) 7.2 Calibration method (7) 7.3 Data processing and data rounding (13) 8 Calibration result expression (13) 9 Re-calibration interval (13) Appendix A Original Record Format (for reference) (15) Appendix B. Internal page format of calibration certificate (for reference) (20) Appendix C Example of Evaluation of Calibration Uncertainty of Temperature Measurement System (25) Appendix D Comparison method of electric heating calibration device (28)

Introduction

This specification is based on JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty", JJF 1071-2010 "National "Rules for Compiling National Metrology and Calibration Specifications". This specification is released for the first time. Air-conditioner air enthalpy method energy efficiency measuring device Calibration specification

1 Scope

This code specifies the measurement characteristics of air-conditioner wind tunnel-style air enthalpy method energy efficiency measurement devices (hereinafter referred to as "energy efficiency measurement devices"), Calibration conditions, calibration items and methods, calibration results, etc. Energy efficiency measurement devices with multiple towing and multiple forms (multiple indoor sides and multiple outdoor sides), Energy efficiency measuring devices with explosion-proof functions or other energy efficiency measuring devices with the same principle are also applicable to this specification. The calibration of the air conditioner environmental laboratory can also refer to this specification.

2 Reference documents

This specification refers to the following documents. JJG313 current transformer for measurement JJG693-2011 combustible gas detection alarm JJG780-1992 AC digital power meter JJG882-2019 pressure transmitter JJG1033 electromagnetic flowmeter JJF 1262-2010 Calibration Specification for Armored Thermocouple JJF 1366-2012 temperature data acquisition instrument calibration specification JJF 1472-2014 Process instrument calibrator calibration specification JJF 1491-2014 Digital AC parameter measuring instrument calibration specification JJF 1599 Standard Room Air Conditioner Cooling Capacity Calibration Specification GB/T 7725 room air conditioner GB/T 29823-2013 Air enthalpy method test device inspection method for test ISO 5151.2017 Non-pipeline air conditioner and heat pump performance test and evaluation ISO 5801.2017 Standardized air duct performance test for ventilator For dated reference documents, only the dated version applies to this specification; for undated reference documents, The latest version (including all amendments) is applicable to this specification.

3 Terms and definitions

The following terms and definitions defined in GB/T 7725 and JJF 1599 apply to this code. 3.1 Air enthalpy method A measurement method for measuring the cooling (heating) quantity and energy efficiency of an air conditioner. The return air parameters and the circulating air volume are measured, and the product of the air volume and the enthalpy difference of the supply air and the return air is used to determine the capacity of the air conditioner.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1858-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1858-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1858-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1858-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.