ISO 13579-11:2017 工業炉および関連する処理装置—エネルギーバランスの測定およびエネルギー効率の計算方法—パート11：さまざまな種類の効率の評価 | ページ 6

3.1.1

boundary

enclosed section that is defined for an energy balance evaluation of object(s)

Note 1 to entry: The energy efficiency evaluations are possible once a boundary is set.

3.1.2

product

item processed in a TPE, including auxiliary material

Note 1 to entry: Product does not include by-products formed in the thermo-processing, e.g. formation of oxidized substance such as iron-scale and aluminium oxide.

Note 2 to entry: Product does not include the accessories, e.g. jigs or fixtures that are heated simultaneously with product.

[SOURCE:ISO 13574:2015, 2.134, modified]

3.1.3

energy balance analysis

grouping of energy values into either input energy or output energy, by measuring and calculating provided energy, including by exothermic reaction and outflowing energy, which also includes by endothermic reaction to/from the boundary

Note 1 to entry: The total energy input and the total energy output inherently balance.

3.1.4

energy efficiency

efficiency defined as specific energy output (3.1.5) divided by specific energy input (3.1.6)

Note 1 to entry: Energy efficiencies are expressed in percentages. Specific energy output and specific energy input are defined in this document.

3.1.5

specific energy output

specific energy defined in this document as effective energy output from the boundary for calculation of an index of efficiency of TPE

3.1.6

specific energy input

amount of supplied energy defined in this document as energy brought to the boundary for calculation of an index of efficiency

3.1.7

available heat

calorific value which is required in a heating chamber of a furnace under specified operating or equipment conditions

Note 1 to entry: Available heat is a form of specific energy output defined in 6.2.5.

Note 2 to entry: “Available energy” in exergy terms has a different concept.

Note 3 to entry: See A.2.5.

3.1.8

available heat ratio

index of efficiency defined as available heat (3.1.7) divided by the calorific value of fuel

Note 1 to entry: This term is one of the significant indexes of a combustion furnace.

3.1.9

fuel equivalent energy of electricity

amount of primary energy which is equivalent to the calorific value of fuel input consumed in electrical generation

3.1.10

fuel equivalent energy conversion

conversion of electrical energy consumption to fuel equivalent energy of electricity (3.1.9)

Note 1 to entry: The factor for calculation, which is generally available, is not considered loss between the power receiving station to the TPE’s power receiving terminal.

Note 2 to entry: The unit kJ/kWh is generally used.

Note 3 to entry: The value for fuel equivalent energy conversion varies depending on governments or regions.

Note 4 to entry: It should be indicated when the conversion is conducted.

3.1.11

energy performance indicator

amount of energy that is consumed per specific production unit of utilities or per specific output of auxiliary equipment

3.1.12

exergy

Note 1 to entry: There are chemical exergy, pressure exergy, mixing exergy and thermal exergy in a combustion system. But pressure exergy and mixing exergy are negligibly small.

3.1.13

exergy loss

difference between exergy that flows in to and flows out from the targeted boundary (3.1.1)

3.1.14

furnace structure

sum of furnace walls, cooling water equipment, furnace opening, etc.

3.2.1

energy balance table

table on which breakdowns of energy input and energy output are listed

3.2.2

efficiency evaluation table

reorganized table from an energy balance table (3.2.1) to categorize energy groups such as specific energy input (3.1.6) or specific energy output (3.1.5) to calculate an efficiency index while maintaining the energy balance