ISO 18134-3:2023 固体バイオ燃料 ― 水分含有量の測定 ― Part 3: 一般的な分析サンプル中の水分 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 238, Solid biofuels, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 335, Solid biofuels, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 18134-3:2015), which has been technically revised.

The main changes are as follows:

• Clause 6: statement added warning against loss or gain of moisture during sample preparation;
• references updated;
• minor editorial corrections.

A list of all parts in the ISO 18134 series can be found on the ISO website.

1 Scope

This document describes the method of determining the moisture content in the general analysis sample by drying in an oven. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis).

Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and, therefore, the moisture of the general analysis sample is determined simultaneously with the determination of other properties being measured (e.g. calorific value, volatile matter, metals, etc.).

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 16559 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography