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GB/T 20738-2018: Rooftop air conditioning unit
Status: Valid GB/T 20738: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20738-2018 | English | 499 |
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Rooftop air conditioning unit
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GB/T 20738-2018
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| GB/T 20738-2006 | English | RFQ |
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Rooftop air conditioning unit
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GB/T 20738-2006
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PDF similar to GB/T 20738-2018
Basic data | Standard ID | GB/T 20738-2018 (GB/T20738-2018) | | Description (Translated English) | Rooftop air conditioning unit | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J73 | | Classification of International Standard | 27.200 | | Word Count Estimation | 25,263 | | Date of Issue | 2018-05-14 | | Date of Implementation | 2018-12-01 | | Older Standard (superseded by this standard) | GB/T 20738-2006 | | Quoted Standard | GB/T 191; GB 2894-2008; GB 4706.32-2012; GB/T 6388; GB/T 9237; GB/T 10870-2014; GB/T 13306; GB/T 14294-2008; GB/T 17758-2010; GB/T 18430.1-2007; GB/T 18836-2017; GB 19576; GB 25130; JB/T 4330-1999; JB/T 7249 | | Regulation (derived from) | National Standards Announcement No. 6 of 2018 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the terms and definitions, types and basic parameters, technical requirements, test methods, inspection rules, markings, packaging, transportation and storage of roof-mounted air-conditioning units (hereinafter referred to as ��air conditioners��) driven by motors. This standard applies to roof air-conditioning units with concentrated air supply. | GB/T 20738-2018: Rooftop air conditioning unit---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.
Rooftop air conditioning unit
ICS 27.200
J73
National Standards of People's Republic of China
Replace GB/T 20738-2006
Roof air conditioning unit
Published on.2018-05-14
2018-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 type and basic parameters 2
5 Technical requirements 5
6 Test method 8
7 Inspection rules 10
8 Marking, packaging, transportation and storage 12
Appendix A (informative) Installation of roof air conditioning units 14
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 20738-2006 "Roof-type air conditioning unit". Compared with GB/T 20738-2006, except for editorial repair
The main technical changes changed are as follows.
--- Increased the "cooling integrated partial load performance coefficient", "cooling season energy efficiency ratio", "year-round performance coefficient" and "cooling energy efficiency ratio"
Religious requirements (see Chapter 3 and 5.3.17);
--- Added the classification of "air conditioning capacity adjustment characteristics (constant volume, non-constant type)" (see 4.1.3);
--- Revised the model preparation requirements, canceled Appendix A "Modeling method for roof type air conditioning unit" (see 4.2,.2006 version 4.2);
---Modified the normal working conditions and working parameters of the air conditioner (see 4.3, 4.3 of the.2006 edition);
--- Removed the salt spray resistance of the plated parts and the adhesion requirements and test of the paint layer (see 5.1.13, 5.1.14, 6.3 of the.2006 edition).
21.6.3.22);
---Modified the safety requirements of air conditioners and adjusted the normative references (see 5.2, 5.3 of.2006 edition);
--- Increased the noise requirement "the measured value should not be greater than the explicit value of 3dB (A)" (see 5.3.19);
--- Increased the "water side pressure loss" requirements of air conditioners (see 5.3.20);
--- Increased the air conditioning machine performance test power consumption correction requirements, the correction method is quoted from GB/T 18836-2017 (see Table 6);
--- Increased requirements for the use of flammable refrigerants (see Chapter 8).
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Refrigeration and Air Conditioning Equipment Standardization Technical Committee (SAC/TC238).
This standard is drafted by. Changzhou Aster Air Conditioning Equipment Co., Ltd., Hefei General Machinery Research Institute, Daikin (China) Investment Limited
Company, Guangdong Jirong Air Conditioning Co., Ltd., Kunshan Taijia Electromechanical Co., Ltd., Shenzhen McQuay Air Conditioning Co., Ltd., Hefei General Environmental Control
Technology limited liability company.
Participated in the drafting of this standard. Guangzhou East and West Kangda Air Conditioning Co., Ltd., Zhejiang Dunan Artificial Environment Co., Ltd., Zhejiang Jiangyu Electric
Machine Co., Ltd., Guangdong Shenling Environmental System Co., Ltd., Zhejiang Guoxiang Co., Ltd.
The main drafters of this standard. Zhong Yu, Chao Longzhao, Zhang Xiuping, Zhang Jianqiang, Wu Jiesheng, Gao Jianting, Zhou Wei, Peng Jinghua, Cheng Bin, Li Xiaoyu,
Pan Zhanhua, Ma Jizhen.
The previous versions of the standards replaced by this standard are.
---GB/T 20738-2006.
Roof air conditioning unit
1 Scope
This standard specifies the terms and definitions, types and bases of roof-mounted air conditioning units (hereinafter referred to as "air conditioners") driven by electric motors.
This parameter, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage.
This standard applies to roof-mounted air conditioning units with centralized air supply.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 packaging storage and transportation icon
GB 2894-2008 Safety signs and guidelines for their use
GB 4706.32-2012 Safety requirements for heat pumps, air conditioners and dehumidifiers for household and similar electrical appliances
GB/T 6388 transport packaging receipt and delivery mark
GB/T 9237 refrigeration system and heat pump safety and environmental requirements
GB/T 10870-2014 Vapor compression cycle cold water (heat pump) unit performance test method
GB/T 13306 signage
GB/T 14294-2008 modular air conditioning unit
GB/T 17758-2010 unit air conditioner
GB/T 18430.1-2007 Vapor compression cycle cold water (heat pump) units - Part 1. Cold, industrial or commercial
Water (heat pump) unit
GB/T 18836-2017 air duct air supply (heat pump) unit
GB 19576 unit air conditioner energy efficiency limit value and energy efficiency grade
GB 25130 unit air conditioner safety requirements
JB/T 4330-1999 Determination of noise in refrigeration and air conditioning equipment
JB/T 7249 refrigeration equipment terminology
3 Terms and definitions
The following terms and definitions defined by JB/T 7249 and GB/T 17758-2010 apply to this document.
3.1
A device that is mounted on a roof and provides concentrated processing air directly to a confined space, room, or area through a duct.
Note. Roof-mounted air conditioning units mainly include refrigeration systems as well as air circulation and purification devices, as well as heating, humidification and ventilation.
3.2
Refrigeration integrated partial load performance coefficient refrigeratingintegratedpartloadvalue;IPLV(C)
A test and calculation according to the method described in Appendix B of GB/T 17758-2010, comprehensively describing the partial load cooling efficiency of the air conditioner
Performance indicators.
Note. The value is expressed in W/W.
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