GB/T 17226-2017 English PDF

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GB/T 17226-2017: Hygienic requirements of classroom ventilation in middle and elementary school
Status: Valid

GB/T 17226: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17226-2017	109	Add to Cart	3 days	Hygienic requirements of classroom ventilation in middle and elementary school	Valid
GB/T 17226-1998	199	Add to Cart	2 days	Health standard of classroom ventilation in elementary and secondary school	Obsolete

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Basic data

Standard ID: GB/T 17226-2017 (GB/T17226-2017)
Description (Translated English): Hygienic requirements of classroom ventilation in middle and elementary school
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C56
Classification of International Standard: 13.100
Word Count Estimation: 5,517
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Older Standard (superseded by this standard): GB/T 17226-1998
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): National Health and Family Planning Commission of the People's Republic of China, Standardization Administration of China

GB/T 17226-2017: Hygienic requirements of classroom ventilation in middle and elementary school

---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.
Hygienic requirements of classroom ventilation in middle and elementary school ICS 13.100 C56 National Standards of People's Republic of China Replacing GB/T 17226-1998 Primary and secondary school classroom ventilation requirements Posted.2017-11-01 2018-05-01 implementation National Health and Family Planning Commission of the People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 17226-1998 "primary and secondary school classroom ventilation standards", and GB/T 17226-1998 compared to the main technical The changes are as follows. --- Modify the standard name "primary and secondary school classroom ventilation requirements"; --- Partially modified the scope of the standard (see Chapter 1,.1998 edition of Chapter 1); --- Added some terms and definitions (see 3.1 and 3.4); --- Remove the number of classroom ventilation requirements (see.1998 version 3.2); --- Modify the classroom indoor air carbon dioxide concentration requirements and the necessary ventilation requirements (see Chapter 4, Chapter 5,.1998 edition 3.1,3.3); --- Modify the provisions of the classroom ventilation mode (see Chapter 7,.1998 edition Chapter 4); --- Modify the classroom ventilation system, an increase of ventilation time (see Chapter 8,.1998 edition of Chapter 5); --- Modify Appendix A content. This standard is proposed and managed by the National Health and Family Planning Commission of the People's Republic of China. This standard was drafted by Harbin Medical University, Peking University, Inner Mongolia Autonomous Region Hohhot Disease Prevention and Control Center. The main drafters of this standard. Wang Yi Jun, Zhang Huiying, Ma Jun, Zhang Lin, Liang Shuang, Chen Sufen, Ulanqimuge. This standard replaces the standards previously issued as. --- GB/T 17226-1998. Primary and secondary school classroom ventilation requirements

1 Scope

This standard specifies the average daily maximum allowable concentration of carbon dioxide in air in primary and secondary school classrooms and determination of methods, primary and secondary students need to change Gas, classroom ventilation and ventilation system. This standard applies to new construction, renovation, expansion and daily central heating in general classrooms, secondary professional, vocational and technical schools can be According to use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 18204.2 public places health inspection methods - Part 2. Chemical contaminants GB 50099 primary and secondary school design specifications

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Daily average maximum allowable concentration maximumalowableconcentration-dailyaverage The maximum allowable value of the mean concentration for any one day. 3.2 Classroom ventilation classroomventilation The use of doors and windows of the gap, ventilation pipes, ventilation windows, etc., directly into the outdoor air, indoor air pollution replacement. 3.3 Necessary ventilation volume necessaryventilationvolume To ensure the basic indoor air quality, to ensure the health of people the necessary ventilation. According to equation (1) calculation. Q = K-K0 (1) In the formula. Q --- necessary ventilation, the unit is cubic meter per hour people [m3/(h · people)]; M --- exhaled carbon dioxide, in units of liters per hour [L/(h · people)]; K --- classroom indoor air maximum allowable concentration of carbon dioxide,%; K0 --- outdoor air carbon dioxide concentration,%. 3.4 Classroom transom classroomtransom The upper part of the classroom doors and windows for ventilation. ......

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