ISO 14438:2002 建物内のガラス—エネルギーバランス値の決定—計算方法 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a technical committee has been established hasthe right to be represented on that committee. International organizations, governmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International ElectrotechnicalCommission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted

by the technical committees are circulated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this International Standard may be the subject ofpatent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 14438 was prepared by the European Committee for Standardization (CEN) in collaboration with TechnicalCommittee ISO/TC 160, Glass in building, Subcommittee SC 2, Use considerations, in accordance with theAgreement on technical cooperation between ISO and CEN (Vienna Agreement).

Throughout the text of this document, read"...this European Standard..." to mean"...this International Standard...".

Annexes A and B of this International Standard are for information only.

Foreword

This document (EN ISO 14438:2002) has been prepared by Technical Committee CEN/TC 129"Glass in building",the secretariat of which is held by IBN, in collaboration with Technical Committee ISO/TC 160"Glass in building".

This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by December 2002, and conflicting national standards shall be withdrawn at the latestby December 2002.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.

A first Formal Vote took place within CEN as prEN 14026 between 2000-10-19 and 2000-12-19.

Annexes A and B are informative.

This standard includes a Bibliography.

1 Scope

This European Standard specifies a calculation method to determine the energy balance value of glazing. ThisEuropean Standard applies to transparent materials such as glass and combinations of glass used to glazewindows in buildings.

This method is intended to evaluate the balance of heat loss and useful heat gain by solar radiation entering thebuilding through the glazing for a given period by means of an average rate of loss (or gain) of heat called theenergy balance value.

The method enables producers to compare the performance of their glazing products. The energy balance valueshould not be used for energy use or heating capacity calculations in buildings.

2 Normative references

This European Standard incorporates by dated or undated references, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).

Bibliography