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JJF 1857-2020 English PDF

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US$719.00 · In stock
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JJF 1857-2020: Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Balanced Ambient Room-type Calorimeter Method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1857-2020	719	Add to Cart	6 days	Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Balanced Ambient Room-type Calorimeter Method	Valid

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Basic data

Standard ID: JJF 1857-2020 (JJF1857-2020)
Description (Translated English): Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Balanced Ambient Room-type Calorimeter Method
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A54
Word Count Estimation: 31,332
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 1857-2020: Calibration Specification for Energy Efficiency Testing Apparatus of Room Air Conditioners Using Balanced Ambient Room-type Calorimeter 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 Balanced Ambient Room-type Calorimeter Method National Metrology Technical Specifications of the People's Republic of China Air conditioner balance environment room calorimeter method Calibration specification for energy efficiency measuring devices 2020-09-11 released 2021-03-11 implementation Issued by the State Administration for Market Regulation Air conditioner balanced environment room calorimeter Method for calibration of energy efficiency measuring devices 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 Participating in the drafting. Fujian Institute of Metrology Guangdong Institute of Metrology China National Electrical Equipment Research Institute Co., Ltd. Guangdong Midea Refrigeration Equipment 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. Hang Chenzhe (China Institute of Metrology) Zhang Haiyun (China Institute of Metrology) Tao Meng (China Institute of Metrology) Participating drafters. Zhang Jieliang (Fujian Institute of Metrology) Wu Jianou (Guangdong Institute of Metrology) Zheng Yisui (China National Electrical Equipment Research Institute Co., Ltd.) Wang Lei (Guangdong Midea Refrigeration Equipment Co., Ltd.)

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 Electrical parameter measurement system (3) 5.4 Quality measurement system(3) 5.5 Thermocouple signal measurement system (4) 5.6 Flow measurement system (4) 5.7 Air nozzle (4) 5.8 Cooling (heating) capacity(5) 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 numerical rounding (13) 8 Calibration result expression (13) 9 Recheck interval (14) Appendix A Original Record Format (for reference) (15) Appendix B. Internal page format of calibration certificate (for reference) (20) Appendix C Examples of Uncertainty Evaluation for Calibration of Temperature Measurement Systems (24)

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 balance environment room calorimeter method Calibration specification for energy efficiency measuring devices

1 Scope

This specification stipulates the energy efficiency measurement device of air conditioner with balanced environment type room calorimeter method (hereinafter referred to as "energy efficiency measurement" Device") measurement characteristics, calibration conditions, calibration items and methods, calibration results, etc. Calibration room calorimetry Metering energy efficiency measuring device, room calorimeter energy efficiency measuring device with explosion-proof function, or other with the same measuring principle Energy efficiency measuring devices are also applicable to this specification.

2 Reference documents

This specification refers to the following documents. JJG313 current transformer for measurement JJG539-2016 Digital Indicator Scale JJG693 combustible gas detection alarm JJG780-1992 AC digital power meter JJG882-2019 pressure transmitter JJG1033 electromagnetic flowmeter JJG1038 Coriolis Mass 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 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 Balanced environment room calorimeter method A measurement method for measuring the cooling (heat) capacity and energy efficiency of air conditioners. Its test device mainly includes indoor The side and outdoor side compartments and the suites with controllable outside temperature, and inject and take out the compartments by measuring the equilibrium state The amount of heat and water determine the cooling (heating) amount of the air conditioner. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1857-2020_English be delivered?

Answer: Upon your order, we will start to translate JJF 1857-2020_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 1857-2020_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1857-2020_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 Sales@ChineseStandard.net. 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.