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LY/T 2147-2013: Technology rules of wood dehumidification drying
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| LY/T 2147-2013 | English | 289 |
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Technology rules of wood dehumidification drying
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LY/T 2147-2013
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Basic data | Standard ID | LY/T 2147-2013 (LY/T2147-2013) | | Description (Translated English) | Technology rules of wood dehumidification drying | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B69 | | Classification of International Standard | 79.020 | | Word Count Estimation | 11,191 | | Quoted Standard | GB/T 153-2009; GB/T 1931-2009; GB/T 4817-2009; GB/T 6491; GB/T 15035-2009; LY/T 1068-2012; LY/T 1798-2008 | | Regulation (derived from) | State Forestry Bulletin 2013 No. 8; industry standard filing Notice No. 5 of 2013 (No. 161 overall) | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies: timber desiccant moisture testing job boards, recommended benchmarks, before drying equipment inspection, the drying process management, quality inspection and basic rules. This standard applies to: Timber wet air as the drying me | LY/T 2147-2013: Technology rules of wood dehumidification drying---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.
Technology rules of wood dehumidification drying
ICS 79.020
B69
People's Republic of China Forestry Industry Standard
Wood dehumidification drying process specification
Published on.2013-03-15
2013-07-01 implementation
State Forestry Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. Publication of this document
The organization is not responsible for identifying these patents.
This standard is proposed and managed by the National Timber Standardization Technical Committee (SAC/TC41).
This standard is drafted by. Beijing Forestry University.
The main drafters of this standard. Wang Tianlong, Yi Songlin, Gao Jianmin, Hu Chuankun.
Wood dehumidification drying process specification
1 Scope
This standard specifies the moisture content inspection board, recommended standard, equipment inspection before drying, drying process management, quality in wood dehumidification drying operation.
Test the basic code.
This standard applies to the dehumidification and drying of sawn timber with wet air as the drying medium.
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 153-2009 coniferous sawn timber
GB/T 1931-2009 Determination method of wood moisture content
GB/T 4817-2009 broadleaf tree sawn timber
GB/T 6491 sawn timber drying quality
GB/T 15035-2009 wood drying terminology
LY/T 1068-2012 Sawmill Kiln Dry Process Specification
LY/T 1798-2008 General technical conditions for sawn timber drying equipment
3 Terms and definitions
The terms and definitions defined in GB/T 15035-2009 and LY/T 1798-2008 apply to this document.
4 Material selection and stacking requirements
Requirements for material selection, stacking, etc. are carried out in accordance with the requirements of Chapter 4 of LY/T 1068-2012.
5 spacers
The requirements for the specifications, section size and length of the spacers shall be in accordance with the requirements of Chapter 4 of LY/T 1068-2012.
6 moisture content test board
6.1 The selection of the inspection board shall be in accordance with the requirements of 5.1 of LY/T 1068-2012.
6.2 Water content test during dehumidification and drying, using drying method (gravimetric method) and electrical measurement method. According to the drying method (gravimetric method),
The electrical test method is supplemented.
6.3 Drying method (gravimetric method) shall be carried out in accordance with the method specified in GB/T 1931-2009. The specific detection method for the moisture content of sawn timber is as follows
The water content measurement method in GB/T 6491 was carried out.
6.4 Use the electrical test method to detect the moisture content of the wood during the drying process, and select the tree species, measurement range and usage method according to the instrument manual.
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