IEC 60675-2 pdf – Household electric direct-acting room heaters – Methods for measuring performance – Part 2: Additional provisions for the measurement of the radiant factor

IEC 60675-2 pdf – Household electric direct-acting room heaters – Methods for measuring performance – Part 2: Additional provisions for the measurement of the radiant factor
This clause of lEC 60675:1994 is applicable, with the following modification:
Replace the first paragraph with the following content:
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This document is used to measure the radiant factor of direct-acting room heaters.
2Normative references
Replace Clause 2 of lEC 60675:1994 with the following content:
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies.For undated references，the latest edition of the referenced document (including anyamendments) applies.
IEC 60675:1994，Household electric direct-acting room heaters – Methods for measuringperformance
1EC60675:1994IAMD1:1998IEC 60675:1994/AMD2:2018
IEC 60675-3:2020，Household electric direct-acting room heaters – Methods for measuringperformance – Part 3: Additional provisions for the measurement of radiation efficiency
3Terms, definitions and symbols
Replace Clause 3 of lEC 60675:1994 with the following content:
For the purposes of this document,the terms and definitions given in IEC 60675:1994,IEC 60675:1994/AMD1:1998,and lEC 60675-3:2020 and the following apply.
Iso and lEc maintain terminological databases for use in standardization at the followingaddresses:
.IEC Electropedia: available at http://www.electropedia.org/
. Iso Online browsing platform: available at http://www.iso.orglobp
3.101
radiant factor
ratio of the measured infrared heat output to the measured total energy input, expressed in %
Note 1 to entry: The radiant factor can be measured for panel heaters,convector heaters and radiant heaters3.102
radiation efficiency
ratio of the heat flow into a (testing) chamber by radiation exchange between an active radiantheating surface and the inner surfaces of the chamber to the nominal electric power of a heaterinside this testing chamber
Note 1 to entry: The radiant factor and the radiation efficiency are measured on different physical backgroundsand not comparable.
3.103
radiation reference plane
flat surface bounded by the edge of the reflector or, in the case where radiant parts projectbelow this edge of the reflector，the flat surface touching the outermost radiant part(see Figure 101)