GB/T 17225-2017 English PDF

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GB/T 17225-2017: Hygienic requirements of microclimate for heating classroom in middle and elementary school
Status: Valid

GB/T 17225: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17225-2017	89	Add to Cart	3 days	Hygienic requirements of microclimate for heating classroom in middle and elementary school	Valid
GB/T 17225-1998	159	Add to Cart	2 days	Standard of heating temperature for classroom of elementary and secondary school	Obsolete

Similar standards

GB/T 36876   GBZ/T 250   GB 11533   GB/T 17226   GB/T 17227   

Basic data

Standard ID: GB/T 17225-2017 (GB/T17225-2017)
Description (Translated English): Hygienic requirements of microclimate for heating classroom in middle and elementary school
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C56
Classification of International Standard: 13.040
Word Count Estimation: 4,445
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Older Standard (superseded by this standard): GB/T 17225-1998
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 17225-2017: Hygienic requirements of microclimate for heating classroom 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 microclimate for heating classroom in middle and elementary school ICS 13.040 C56 National Standards of People's Republic of China Replacing GB/T 17225-1998 Primary and secondary heating classroom micro-climate health 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 17225-1998 "primary and middle school classroom heating temperature standard", this standard compared with GB/T 17225-1998 The main technical changes are as follows. --- Standard name was changed to "primary and secondary heating classroom micro-climate health requirements"; --- Modify the standard scope of use (see Chapter 1,.1998 edition Chapter 1); --- Increasing the normative references (see Chapter 2); --- Added and revised some terms and definitions (see Chapter 3, Chapter 2 of the.1998 edition); --- Modify the classroom health and temperature and humidity requirements (see 4.1 and 4.2,.1998 version 3.1 and 3.2); --- Modify the classroom temperature, humidity and wind speed measurement method (see Chapter 5,.1998 edition Chapter 4). This standard proposed by the National Health and Family Planning Commission and centralized. This standard was drafted by Harbin Medical University, Peking University Health Science Center, Health Authority of Liaoning Province Health Bureau, Shenyang City Health Authority Governor. The main drafters of this standard. Wang Yi Jun, Wu Li Jie, Ma Jun, Pan Dehong, Wang Guangyu, Zhang Lin, Xia Wei, Sun Rainbow. This standard replaces the standards previously issued as. --- GB/T 17225-1998. Primary and secondary heating classroom micro-climate health requirements

1 Scope

This standard specifies the heating area primary and middle schools winter heating classroom micro-climate health requirements and determination of indicators. This standard applies to heating central heating facilities in general ordinary primary and secondary schools and secondary vocational schools, vocational and technical schools classrooms. Non-centralized heating area primary and middle school classrooms can refer 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 18204.1 public places health inspection methods - Part 1. Physical factors

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Heating and heating Cold-proof design of building heating devices, so that the building interior to get the right temperature. 3.2 Central heating centralheating By a unified source of heat through the pipeline or the use of centrally managed floor heating or central air-conditioning heating to the heating mode of heating. 3.3 Horizontal temperature difference horizontaltemperaturedifference The difference between the air temperature at the four corners of the classroom and the temperature in the middle of the classroom. 3.4 Vertical temperature difference verticaltemperaturedifference Students sitting, the height of the foot height and head height temperature difference. 3.5 Relative humidity relativehumidity The ratio of the actual water vapor pressure in the air to the saturated vapor pressure under the same humidity condition is expressed in%. 3.6 Windspeed The unit of time in the horizontal direction of air movement in units of m/s or km/h said.

4 health requirements

4.1 During the study period, the temperature in the middle of the classroom (0.8m ~ 1.2m from the ground) is 18 ℃ ~ 22 ℃; the horizontal and vertical temperature difference Should not exceed ± 2 ℃. ......

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