ISO 22968:2010 強制ドラフトオイルバーナー | ページ 6

3.1.1

強制ドラフトバーナー

燃焼用の全空気がファンによって供給されるバーナー

3.1.2

自動強制ドラフトバーナー

バーナーの点火、火炎監視、およびオン/オフの切り替えが自動的に行われる、自動点火、火炎監視、およびバーナー制御装置を備えたバーナー

注記 1:バーナーの熱入力は、運転中に自動または手動で調整できます。

3.1.3

二重燃料バーナー

気体燃料と液体燃料の両方を同時にまたは連続して燃焼できるバーナー。

3.1.4

燃焼室

燃焼が起こる器具の部分

3.1.5

バーナーヘッド

燃料と空気を混合するための装置。例えば、バーナーの作動中に火炎を安全な位置に保つ安定ディスクとノズルを含む。

3.1.6

熱媒体

器具から熱エネルギーを輸送するためのガス状または液体状の物質

3.1.7

アプライアンス

熱発生器:バーナー燃焼ガスから熱伝達媒体に熱入力を間接的に伝達するために使用される燃焼室と熱交換器を有するバーナーが燃焼する熱発生器。

3.2.1

mass flow rate

q_m

mass of oil consumed by the burner in unit time during continuous operation

Note 1 to entry: It is expressed in kilograms per hour (kg/h) or grams per hour (g/h).

3.2.2

maximum mass flow rate

mass of fuel consumed during one hour at the highest mass flow rate stated by the manufacturer

Note 1 to entry: It is expressed in kilograms per hour (kg/h).

3.2.3

minimum mass flow rate

mass of fuel consumed during one hour at the lowest mass flow rate stated by the manufacturer

Note 1 to entry: It is expressed in kilograms per hour (kg/h).

3.2.4

calorific value

quantity of heat produced by the combustion, at a constant pressure equal to 0,101 325 MPa, of unit volume or mass of fuel oil, the constituents of the combustible mixture being taken at reference conditions and the products of combustion being brought back to the same conditions

Note 2 to entry: It is expressed in megajoules per kilogram (MJ/kg).

Note 3 to entry: See ISO 14532.

3.2.5

heat input

Q_F

amount of heat as a function of time released by the burner at a given mass flow rate

Note 1 to entry: It is expressed in kilowatts (kW) and calculated as the oil flow rate x lower calorific value ( q_{V o}H_i) of the fuel.

3.2.6

maximum heat input

Q_Fmax

maximum heat input of the burner as stated by the manufacturer

Note 1 to entry: It is expressed in kilowatts (kW).

3.2.7

minimum heat input

Q_Fmin

minimum heat input of the burner as stated by the manufacturer

Note 1 to entry: It is expressed in kilowatts (kW).

3.2.8

start heat input

Q_s

maximum heat input at the start of ignition as a percentage of heat input ( Q_F)

3.2.9

nominal heat input

Q_FN

value of the heat input declared by the manufacturer

Note 1 to entry: It is expressed in kilowatts (kW).

Note 2 to entry: Fixed heat input or range-rated burners have a single nominal heat input. Range-rated burners can be adjusted between the maximum nominal heat input and the minimum nominal heat input declared by the manufacturer.

3.2.10

heat load rate

ratio between heat input ( Q_F) and volume or cross-sectional area of the combustion chamber

Note 1 to entry: It may be expressed in kilowatt hours per cubic metre (kWh/m³) or per square metre (kWh/m²).

3.2.11

turndown rate

ratio between maximum heat input ( Q_Fmax) and minimum heat input ( Q_Fmin)

3.3.1

combustion chamber pressure

p_F

effective positive pressure or negative pressure relative to the atmospheric pressure prevailing in the combustion chamber

Note 1 to entry: Combustion chamber pressure is measured in kilopascals (kPa).

3.3.2

length of the combustion chamber

l₁

distance between the face of the nozzle or the fuel outlet and the rear wall of the test flame tube or combustion chamber or any lateral contraction

Note 1 to entry: The length of the combustion chamber is measured in metres (m).

3.3.3

diameter of the combustion chamber

d₁

inner diameter of the combustion chamber around the flame tube of the burner

Note 1 to entry: The diameter of the combustion chamber is measured in metres (m).

3.3.4

burner flame tube

device which hosts the mixing device and the root of the flame

3.3.5

test flame tube

cylindrical part of the test rig where the combustion takes place

3.4.1

content of carbon dioxide

co₂

ratio of the volume of carbon dioxide to the total volume of dry gaseous products in which it is present

Note 1 to entry: The carbon dioxide content is expressed as a percentage volume fraction.

3.4.2

content of oxygen

O₂

ratio of the volume of oxygen to the total volume of dry gaseous products in which it is present

Note 1 to entry: The oxygen content is expressed as a percentage volume fraction.

3.4.3

content of carbon monoxide

co

ratio of the volume of carbon monoxide to the total volume of dry gaseous products in which it is present

Note 1 to entry: The carbon monoxide content is expressed as a volume fraction, in units of millilitres per cubic metre (ml/m³) for measuring purposes and in milligrams per kilowatt hour (mg/kWh) related to inferior calorific value ( H_i) for calculation purposes and declaring values.

3.4.4

content of nitrogen oxides

no_x

ratio of the combined volume of nitrogen oxides to the total volume of dry gaseous products in which they are present

Note 1 to entry: The nitrogen oxides content is expressed as a volume fraction, in units of millilitres per cubic metre (ml/m³) for measuring purposes and in milligrams per kilowatt hour (mg/kWh) related to inferior calorific value ( H_i) for calculation purposes and declaring values.

3.4.5

content of unburnt hydrocarbons

ratio of the volume of unburnt hydrocarbons to the total volume of dry gaseous products in which they are present

Note 1 to entry: It is expressed in millilitres per cubic metre (ml/m³), calculated as C₃H₈.

3.4.6

smoke number

sample reference whose shade is closest to that of the test mark

Note 1 to entry: See Annex A.

3.4.7

excess air ratio

λ

ratio between the effectively introduced quantity of air and the theoretically required quantity of air

3.5.1

flame detector device

device by which the presence of a flame is detected and signalled

Note 1 to entry: It can consist of a flame sensor, an amplifier and an element for signal transmission. These parts, with the possible exception of the actual flame sensor, may be assembled in a single housing for use in conjunction with a programming unit.

3.5.2

automatic burner control system

system comprising at least a programming unit and all the elements of a flame detector device

Note 1 to entry: The various functions of an automatic burner control system may be in one or more housings.

3.5.3

programming unit

unit that reacts to signals from control and safety devices, gives control commands, controls the start-up sequence, supervises the burner operation and causes controlled shut-down and, if necessary, safety shut-down and non-volatile lock-out

Note 1 to entry: The programming unit follows a predetermined sequence of actions and always operates in conjunction with a flame detector device.

3.5.4

safe start check

procedure employing a protection circuit or circuits to establish whether or not a fault in a safety system or flame simulating condition exists prior to start-up

3.5.5

controlled shut-down

process by which the power to the fuel shut-off valve(s) is immediately removed before any other action takes place (e.g. as a result of activating a controlling function)

3.5.6

safety shut-down

process that is effected immediately following the response of a safety limiter or the detection of a fault in the automatic burner control system and which puts the burner out of operation by immediately removing the power to the fuel shut-off valve(s) and the ignition device

Note 1 to entry: Safety shut-down can also occur as a result of an interruption/decrease of the power supply.

3.5.7

non-volatile lock-out

safety shut-down condition of the system, such that a restart can only be accomplished by a manual reset of the system and by no other means

3.5.8

safety shut-off device

device that opens and that is held open by auxiliary energy and that closes by interruption or failure of the auxiliary energy that automatically cuts off the fuel supply

3.5.9

reignition

operation by which the fuel is reignited after the extinction of the flame during operation without the fuel supply being interrupted

3.5.10

recycling

process by which, after a safety shut-down, a full start-up sequence is automatically repeated

3.5.11

pressure switch

switch that compares the actual value of a pressure with the desired value, gives a signal when the actual value exceeds or drops below the desired value and initiates the shut-off sequence

3.5.12

ignition device

any means used to ignite the fuel at the ignition burner or at the main burner

Note 1 to entry: Flame, electrical ignition.

3.5.13

pressure monitoring device

device which monitors the actual value of a pressure and compares with the desired value, giving a signal when the actual value deviates from the desired value by a predetermined amount

3.5.14

output regulator

component on the burner intended to be used for adjusting the heat input, within a range of heat inputs stated by the manufacturer, to suit actual heat requirements of the installation

Note 1 to entry: This adjustment may be progressive or in discrete steps.

3.6.1

total ignition time

period during which the ignition device is in operation

Note 1 to entry: Pre-ignition, ignition and post-ignition times make up the total ignition time.

Note 2 to entry: It is expressed in seconds (s).

3.6.2

pre-ignition time

period between the start of the ignition cycle and the release of the fuel

Note 1 to entry: It is expressed in seconds (s).

3.6.3

ignition time

period between the release of the fuel and the first indication of the flame by the flame detector device

Note 1 to entry: It is expressed in seconds (s).

3.6.4

post-ignition time

period between the first indication of the flame by the flame detector device and the ignition device shut-off

Note 1 to entry: It is expressed in seconds (s).

3.6.5

safety time

t_s

duration of the maximum permissible time during which the burner control unit allows the fuel to be released without there being a flame

Note 1 to entry: It is expressed in seconds (s).

3.6.6

ignition safety time

period starting from the signal for release of the fuel and terminating at the moment at which the signal for interrupting the fuel supply is given

Note 1 to entry: It is expressed in seconds (s).

3.6.7

flame extinction safety time

period that starts with the signal that the flame has been extinguished and ends with the signal to de-energize the safety shut-off valve of the oil supply

Note 1 to entry: It is expressed in seconds (s).

3.6.8

purge time

period during which the combustion chamber is compulsorily ventilated without any fuel being supplied

Note 1 to entry: It is expressed in seconds (s).

3.6.9

pre-purge time

period during which purging takes place at the proven air rate prior to energizing of the safety shut-off device

Note 1 to entry: It is expressed in seconds (s).

3.6.10

post-purge time

period between any shut-down and the moment the fan is switched off

Note 1 to entry: It is expressed in seconds (s).

3.6.11

flame simulation

signal indicating the existence of a flame when no flame is actually present

3.6.12

operational state

state commencing with the presence of a flame after the permissible ignition safety time has expired

Note 1 to entry: It is the end of the starting process. Starting can, however, be considered not to have taken place if the fuel release is not authorized or if it is interrupted after expiry of the safety time by the lock-out of the burner control unit.

3.6.13

intermittent operation

state of operation whose duration does not exceed 24 h

3.6.14

continuous operation

state of operation whose duration exceeds 24 h

3.7.1

working diagram

admissible range of application of the burner (pressure in the combustion chamber as a function of fuel flow)

3.7.2

test diagram

test range of the burner during the tests (pressure in the combustion chamber as a function of fuel flow)