1、BRITISH STANDARD BS 1179-6: 1980 Glossary of Terms used in the gas industry Part 6: Combustion and utilization including installation at consumers premises UDC 001.4:622.76BS1179-6:1980 This British Standard, having been prepared under the direction of the Gas Standards Committee, was published unde
2、r the authority of the Executive Board and comes into effect on 30 June 1980 BSI 06-1999 First published as BS 1179, September 1944 First revision September 1961 Second revision September 1967 Part third revision (Part 6) June1980 The following BSI references relate to the work on this standard: Com
3、mittee reference GSE/2 Draftfor comment 77/72456 DC ISBN 0 580 11063 X Cooperating organizations The Gas Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: B
4、ritish Combustion Equipment Manufacturers Association British Gas Corporation* Chartered Institution of Building Services* Department of Energy (Gas Standards Branch)* Department of the Environment (PSA) Department of the Environment (Housing and Construction) Heating and Ventilating Contractors Ass
5、ociation Institution of Gas Engineers* Liquefied Petroleum Gas Industry Technical Association (UK) National Association of Plumbing, Heating and Mechanical Services Contractors Society of British Gas Industries Water-tube Boilermakers Association The organizations marked with an asterisk in the abov
6、e list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: National Coal Board Amendments issued since publication Amd. No. Date of issue CommentsBS1179-6:1980 BSI 06-1999 i Contents Page Cooperating organizations Inside f
7、ront cover Foreword ii 6.1 Combustion 1 6.1.1 Gas properties and grouping 1 6.1.2 Flame phenomena 2 6.1.3 Aeration 2 6.1.4 Burners 3 6.1.5 Burner components 4 6.1.6 Ignition systems and pilots 4 6.1.7 Test requirements 5 6.2 Controls 5 6.2.1 General 5 6.2.2 Thermostats 6 6.2.3 Timing controls 7 6.2.
8、4 Ignition controls and flame safeguard systems 8 6.2.5 Other safety devices 9 6.3 Domestic and commercial utilization 10 6.3.1 General 10 6.3.2 Cooking and catering 11 6.3.3 Space heating 13 6.3.4 Water heating 15 6.3.5 Incineration 16 6.3.6 Other fields of utilization 17 6.4 Industrial utilization
9、 17 6.4.1 General and burner types 17 6.4.2 Furnaces 18 6.4.3 Ovens 20 6.4.4 Other industrial equipment 20 6.5 Lighting 20 6.6 Installation at consumers premises 21 6.6.1 Gas supply 21 6.6.2 Fluing 22 6.6.3 Air supply and ventilation 24 6.7 Conversion 24 6.8 Appliance parts 25 6.8.1 General construc
10、tion 25 6.8.2 Cooking and catering appliances 26 6.8.3 Space heating appliances 28 6.8.4 Water heating appliances 29 6.8.5 Refrigerators 30 6.8.6 Incinerators 30 6.8.7 Other appliances 30 6.8.8 Burners, pilots and ignition systems 30 6.8.9 Flueways and terminals 32 Appendix A List of preferred terms
11、 that do not require definition 33 Alphabetical index 34 Publications referred to Inside back coverBS1179-6:1980 ii BSI 06-1999 Foreword This glossary, first published in 1944 at the request of the Institution of Gas Engineers, was revised and extended in 1961 and 1967 in order to incorporate new te
12、rms and modified definitions, including those originally introduced in British Standard codes of practice. It has now been further revised to take account of developments in technology, particularly those arising from the general introduction and distribution of natural gas. Note has also been taken
13、 of the interpretations of certain terms included in the Gas Safety Regulations 1972, but it should be remembered that the definitions given in this glossary have currency in a wider field than that covered by the Regulations. The glossary deals primarily with technical terms special to the gas indu
14、stry and is divided into the following Parts corresponding to the fields in which the terms are used: Part 1: General 1) ; Part 2: Natural gas production 1) ; Part 3: Carbonization and gasification 1) ; Part 4: Transmission, distribution and storage 1) ; Part 5: Measurement and regulation 1) ; Part
15、6: Combustion and utilization including installation at consumers premises. In each section of the glossary, terms are arranged in a logical order: general terms occur before terms relating to specialized features, and an attempt has been made to bring together groups of terms indicating subdivision
16、s of a particular aspect, or terms whose interpretation can best be understood in comparison with one another. For convenience of reference each definition has been assigned a number which begins with the digit denoting the particular Part of the glossary. For example, all definitions in Part 6 have
17、 6 as the first digit of their number. The next two digits refer to the appropriate section and subsection (if any) of this Part and the final two digits indicate the position in sequence within the appropriate subsection. For example, in Part 6, 6 3407 indicates the seventh definition in subsection
18、 6.3.4. Expressions that, though commonly used in the gas industry, have the same meaning there as in their ordinary usage, have generally been excluded. However, it is important to avoid confusion when designating gas appliance parts and a preferred nomenclature for these is desirable, even though
19、the terms may be in common usage. A separate subsection of this Part has accordingly been devoted to appliance parts, and the terms listed should be used in all communications relating to appliance parts. The arrangement of this subsection(6.8) follows closely that of the subsection 6.3 in which the
20、 appliances themselves and their functions are defined. Preferred terms that have obvious meanings have been excluded from the glossary and, instead, they are listed alphabetically in Appendix A. Some terms are used with different meanings in different branches of the gas industry and the definition
21、s in this Part are not necessarily applicable in other branches. Different definitions appropriate to another branch of the industry may accordingly appear in other Parts of this glossary. The definitions have, however, been so drafted as to embrace minor regional variations and to accommodate fores
22、eeable changes in design and technique. Where a substantial group of terms has already been defined in relation to other industries, reference has been included to the relevant British Standard glossary in order to avoid unnecessary duplication. 1) In course of preparation.BS1179-6:1980 BSI 06-1999
23、iii In some cases, several terms correspond to each definition; those which it is considered should be given preference are shown in bold type; others less favoured are shown in italics while those which, it is hoped, will fall into disuse, are shown in medium roman type and marked “deprecated”. For
24、 gas appliance parts it is particularly desirable that only the preferred term should be used. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
25、not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages1to 44, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This w
26、ill be indicated in the amendment table on the inside front cover.iv blankBS1179-6:1980 BSI 06-1999 1 6.1 Combustion 6.1.1 Gas properties and grouping No. Term Definition 6 1101 combustion characteristics Properties of a gas that influence the behaviour of the flame when the gas is burnt. 6 1102 rel
27、ative density (specificgravity) The ratio of the mass of unit volume of dry gas to that of unit volume of dry air under the same conditions of temperature and pressure. 6 1103 Wobbe number The heat release when a gas is burned at a constant gas supply pressure, expressed by: 6 1104 gas modulus The r
28、atio: When converting an appliance operating on gas of one Wobbe number to operation on gas of another Wobbe number, this ratio should be the same, in order to achieve parity of heat input and correct primary air entrainment. 6 1105 aeration number (ATBno.) (A no.) A measure of the flame speed of a
29、gas obtained by the use of an aeration test burner, indicative of light-back tendency on aerated burners. 6 1106 flame speed The rate of linear propagation of flame through a gas-air mixture. 6 1107 flame-speed factor (S) The burning velocity of a stoichiometric mixture of gas and air expressed as a
30、 percentage of the burning velocity of the same mixture of hydrogen and air. 6 1108 sooting number A measure of the sooting propensity of a gas obtained by determining the volume rate of flow of air required to prevent soot-tailing of the flame of the gas in a standard sooting test burner. 6 1109 re
31、version pressure A measure of the resistance of a gas to flame-lift, indicated by the gas pressure at which a flame, which has lifted at higher pressure, returns to the burner port of a standard burner. 6 1110 interchangeability ofgases The suitability of gases of different combustion characteristic
32、s for use in existing appliances without unacceptable changes in performance. 6 1111 family of gases A range of gases characterized by having a Wobbe number within specified limits. 6 1112 first family gas Gas of Wobbe number 24.4 MJ/m 3to 28.8 MJ/m 3under standard conditions. 6 1113 second family g
33、as Gas of Wobbe number 48.2 MJ/m 3to 53.2 MJ/m 3under standard conditions. 6 1114 third family gas Gas of Wobbe number 72.6 MJ/m 3to 87.8 MJ/m 3under standard conditions. 6 1115 gas group A subdivision of a family of gases. NOTEA standard grouping of first family gases is given in BS 4947.BS1179-6:1
34、980 2 BSI 06-1999 6.1.2 Flame phenomena 6.1.3 Aeration No. Term Definition 6 1201 inner cone The blue or green region within the flame produced on a burner supplied with an air/gas mixture. Combustion commences at the surface of this region. 6 1202 yellow tipping The appearance of a yellow colour at
35、 the top part of the periphery of a flame. 6 1203 flame-lift lifting Separation of a flame from a burner port, whilst continuing to burn with its base some distance from the port. 6 1204 flame blow-off flame lift-off Separation of a flame from a burner port, resulting in extinction. 6 1205 flame ret
36、ention Prevention of flame-lift. 6 1206 light-back flash-back Transfer of combustion from a burner port to a point upstream in the gas/air flow. a) Direct light-back: light-back through the burner itself. b) Indirect light-back: Roll over. light-back by a flame not passing through the burner itself.
37、 6 1207 flame roll-out The occurrence, at the moment of ignition, of a transient flame outside the combustion chamber. 6 1208 flame smother Defective combustion arising when insufficient air reaches a flame and/or the flame burns in vitiated air. 6 1209 flame reversal The pulling downwards of gas fi
38、re flames caused by excessive flue-induced suction through the low-level ventilation opening in the closure plate. 6 1210 burner vitiation Reduction of the oxygen supply to a burner by vitiation, to such an extent that incomplete combustion or flame extinction results. 6 1211 surface combustion Comb
39、ustion with an almost imperceptible flame on an incandescent surface achieved by passing a mixture of gas and air through a porous or perforated surface. 6 1301 primary air Air introduced into a gas stream before it leaves the burner port. 6 1302 secondary air Air required for completion of combusti
40、on, admitted to the combustion zone after combustion with primary air has commenced. 6 1303 air-gas ratio The ratio of the volume of primary air to the volume of gas in a mixture. 6 1304 theoretical air requirement The calculated volume of air required for complete combustion of unit volume of gas.
41、6 1305 stoichiometric mixture A mixture of gas and air in the proportions determined by the theoretical air requirement. 6 1306 excess air Air in excess of the theoretical requirement. 6 1307 lint A mixture of dust, fluff, fibres and droplets of grease, which can collect in the airways of a burner.B
42、S1179-6:1980 BSI 06-1999 3 6.1.4 Burners No. Term Definition 6 1401 burner The complete unit on which, or in certain cases, in which, a flame is maintained. 6 1402 burner system The burner(s) and all controls downstream of a gas isolating valve of the plant or appliance. 6 1403 package burner A comp
43、lete burner system usually of the forced draught type supplied as a separate unit. 6 1404 non-aerated burner neat-gas burner post-aerated burner A burner where none of the required air has been mixed with the gas before it leaves the burner port(s). 6 1405 aerated burner A burner in which some or al
44、l of the required air has been mixed with the gas before it leaves the burner port(s). 6 1406 aeration test burner (ATB) An aerated burner of standardized construction having a controlled and graduated primary air port by means of which a gas flame of standard inner cone height can be produced. 6 14
45、07 pre-aerated burner An aerated burner to which gas and air are supplied already mixed. 6 1408 natural draught burner atmospheric burner An aerated burner where the combustion air is entrained at atmospheric pressure. 6 1409 induced-draught burner A burner where combustion air is introduced by prov
46、iding a suction in the combustion chamber by mechanical means. 6 1410 forced-draught burner A burner where the combustion air is provided under pressure. 6 1411 per-ignitable burner A burner where a flame initiated at the air port passes to the burner ports where it continues to burn. 6 1412 bar bur
47、ner A burner in the form of a length of tubing with a series of burner ports or jets in it. 6 1413 ribbon burner stripburner An aerated bar burner fitted with a metal ribbon insert forming lines of burner ports. 6 1414 ring burner A burner in the form of a toroid with a series of burner ports or jet
48、s in it. 6 1415 pinhole burner A burner in which the burner ports are a number of very small holes. 6 1416 duplex burner A burner designed in two independent sections to be operated as a whole or in part by a single gas tap. 6 1417 spreading-flame burner star burner continental-type burner (deprecat
49、ed) A burner having burner ports near to the surface being heated and giving flames that extend radially. 6 1418 combination firing burner A burner system with two or more fuels firing simultaneously on the burner(s). 6 1419 dual fuel burner alternative fuel burner (deprecated) A burner system that can operate either on gas or another fuel, but not simultaneously.BS1179-6:1980 4 BSI 06-1999 6.1.5 Burner components 6.1.6 Ignition systems and pilots No. Term Definition 6 1501 jet A device containing one or more orifices from which a stream of gas and/or air is
