GB/T 27698.7-2011 English PDF

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GB/T 27698.7-2011: Test method for the performance of heat exchangers and heat exchange element -- Part 7: Measurement of noise from air-cooled heat exchangers
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27698.7-2011	1159	Add to Cart	5 days	Test method for the performance of heat exchangers and heat exchange element -- Part 7: Measurement of noise from air-cooled heat exchangers	Obsolete

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Basic data

Standard ID: GB/T 27698.7-2011 (GB/T27698.7-2011)
Description (Translated English): Test method for the performance of heat exchangers and heat exchange element -- Part 7: Measurement of noise from air-cooled heat exchangers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J75
Classification of International Standard: 27.060.30
Word Count Estimation: 29,295
Date of Issue: 2011-12-30
Date of Implementation: 2012-06-01
Quoted Standard: GB/T 3241; GB/T 3785; GB/T 4129; JJG 176; JJG 188; NB/T 47007
Regulation (derived from): Announcement of Newly Approved National Standards No. 22 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the cooler noise A-weighted sound level, octave sound pressure level and sound power level determination. This section applies to bundle horizontal induced draft air cooler, blast air cooler. Barn, wet, wet and dry joint type and other types of air coolers noise measurement method can refer to this part. This part is not a single component for generating noise (such as the impeller, transmission and motors, etc.). Determination under this Part includes two types: a) factory test: the factory in the factory before the separate determination of a cross noise, b) Field test: the device in the field of noise on a measurement unit.

GB/T 27698.7-2011: Test method for the performance of heat exchangers and heat exchange element -- Part 7: Measurement of noise from air-cooled heat exchangers

---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.
Test method for the performance of heat exchangers and heat exchange element Part 7. Measurement of noise from air-cooled heat exchangers ICS 27.060.30 J75 National Standards of People's Republic of China Heat exchangers and heat transfer device performance test methods Part 7. Determination of Air Cooler Noise Part 7. Measurementofnoisefromair-cooledheatexchangers Issued on. 2011-12-30 2012-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Determination of the amount and the measurement error of 2 5 3 acoustic testing environment Test equipment 4 6 7 Test Method 4 Appendix A (normative) Correction acoustic test environment 13 Annex B (informative) Determination of noise across a single example of a report 14 Example 20 Noise Measurement Report Annex C (informative) a cell site

Foreword

GB/T 27698 "heat exchangers and heat transfer device performance test methods" is divided into eight sections. --- Part 1. General requirements; --- Part 2. shell and tube heat exchanger; --- Part 3. plate heat exchanger; --- Part 4. spiral plate heat exchanger; --- Part 5. shell and tube heat exchanger heat transfer tubes; --- Part 6. Used for air cooling fin tube; --- Part 7. Air Cooler noise measurement; --- Part 8. Calibration of industrial heat exchangers. This section GB/T 27698 Part 7. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National boiler pressure vessel Standardization Technical Committee (SAC/TC262) and focal points. This section is responsible for drafting units. High-tech Gansu Lanke Petrochemical Equipment Co., Ltd. (Lanzhou Petroleum Machinery Research Institute). It participated in the drafting of this section. Country refining oil drilling equipment for Quality Supervision and Inspection Center, industrial machinery energy-saving projects Heat Transfer Technology Center, China Petrochemical Engineering Construction Corporation. The main drafters of this section. Han Zhuo Ma, Zhao Liang, Li Su, Niemeng Qiu, Zhang Ying Kai. Heat exchangers and heat transfer device performance test methods Part 7. Determination of Air Cooler Noise

1 Scope

1.1 Subject Matter This section GB/T 27698 specifies the A sound level measuring method octave sound pressure level and sound power level of air cooler noise. 1.2 Scope 1.2.1 This section applies to horizontal tubes induced draft air cooled heat exchangers, forced-air cooler. Slant, wet, wet and dry, and other joint formula Noise measurement method type air cooler may refer to this part. This section does not apply to individual components that generate noise (such as impellers, transmission unit Set and motors, etc.). 1.2.2 This type of assay section shall consist of two types. a) Factory test. the factory before the product is delivered with a single span noise measurement; b) field test. the noise on the field means a unit of measurement.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 3241 octave and fractional octave filters GB/T 3785 sound level meter electric, acoustic performance and test methods Performance and calibration of GB/T 4129 Acoustics Determination of sound power levels for standard sound source requirements JJG176 acoustic calibrator verification procedures JJG188 sound level meter verification procedures NB/T 47007 (JB/T 4758) air-cooled heat exchangers

3 Terms and Definitions

The following terms and definitions apply to this section. 3.1 Cross-bay One or more of a bundle with one or more than one fan, assembled from a skeleton and other appurtenances empty Cooler. 3.2 Unit unit A cross or air cooler across simultaneously. 3.3 Blower Air Cooler induced-draughtexchanger Bundle placed fan suction side of the air cooler. ......

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