ISO 26382:2010 コージェネレーションシステム—計画、評価、調達のための技術宣言 | ページ 2

3.1

asset

resource owned by an organization, normally for the purpose of generating income or increasing value

3.2

auxiliary heating and/or cooling sources

equipment installed in the CGS which supply additional heating and/or cooling, as required

3.3

availability

share of the total time that the CGS is available to produce electric power, heating and/or cooling as required during a defined period, normally a calendar year

3.4

capital expenditure

money used to purchase, install and commission a capital asset

[SOURCE:ISO 15663-1:2000, definition 2.1.6]

3.5

cogeneration system

CGS

facility which simultaneously generates electric power and heating and/or cooling using exhaust gas or waste heat from engines or prime movers

3.6

conventional system

system or equipment which supplies electric power (including imported electric power from an external grid) and heating and/or cooling independently without using exhaust gas or waste heat from engines or prime movers

3.7

fuel supply agreement

agreement entered into with a fuel supplier which provides the basis of ensuring the fuel supply requirements of the facility over a defined period

3.8

internal rate of return

IRR

discount rate that gives a net present value equal to zero

Note 1 to entry: For more information on this time-discounted measure of investment desirability, see ISO 15663-2:2001, 4.1.4.

3.9

life cycle

all development stages of an item of equipment or function, from when the study commences up to and including disposal

[SOURCE:ISO 15663-1:2000, definition 2.1.14]

3.10

life-cycle cost

LCC

discounted cumulative total of all costs incurred by a special function or item of equipment over its life cycle

[SOURCE:ISO 15663-1:2000, definition 2.1.15]

Note 1 to entry: Life-cycle cost means the sum of all the expenditures associated with the project during its entire service life. A method for calculating the life-cycle cost is shown in Annex B.

3.11

net present value

NPV

sum of the total discounted costs and revenues

[SOURCE:ISO 15663-1:2000, definition 2.1.18]

3.12

operating expenditure

money used for operation and maintenance, including associated costs such as logistics and spares

[SOURCE:ISO 15663-1:2000, definition 2.1.19]

3.13

payback period

period after which the initial capital invested has been paid back by the accumulated net revenue earned

[SOURCE:ISO 15663-1:2000, definition 2.1.20]

Note 1 to entry: The payback-period method is not equivalent to the internal-rate-of-return method. The payback-period method is recommended only as a secondary method of measuring investment worth. In particular, it is suggested that the payback-period method be used in addition to a method based on the time value of money.

3.14

reliability

share of the time outside of planned maintenance and other planned shut-downs that the CGS can produce electric power and heat as required during a defined period, normally a calendar year

3.15

scheduled maintenance

maintenance of the CGS at regularly scheduled times

Note 1 to entry: Scheduled maintenance includes planning times for the inspection, adjustment and exchange of equipment to prevent the CGS from malfunctioning and to recover efficiency and performance.

3.16

sensitivity analysis

analysis for determining the effects of the uncertainties in estimating parameter values, which is tested by independently varying one parameter at a time to determine how sensitive each parameter is to the project analysis and, therefore, the project risk

Note 1 to entry: The testing process for any item under evaluation establishes whether or not the final conclusion is sensitive to a change in assumption. The variables subjected to sensitivity analysis will usually include capital costs, overall conversion efficiency, completion time, fuel costs and the escalation of costs.

3.17

system design

design of the CGS