Reference Unit - TX - Revision history

HansdG: /* Functional Unit Detail (Optional Layer) */

2025-05-06T08:34:08Z

Functional Unit Detail (Optional Layer)

← Older revision		Revision as of 10:34, 6 May 2025
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	== Functional Unit Detail (Optional Layer) ==		== Functional Unit Detail (Optional Layer) ==

	If the Reference Unit is set to '''FU (Functional Unit)''', an additional ~~layer may~~ be ~~used~~:		If the Reference Unit is set to '''FU (Functional Unit)''', an additional data can be provided:

	* '''FU Key''': A standardized code or string representing the functional unit,optional if standardized, example is "DFU", for Daily Food Unit		* '''FU Key''': A standardized code or string representing the functional unit,optional if standardized, example is "DFU", for Daily Food Unit

HansdG: /* Functional Unit Detail (Optional Layer) */

2025-05-06T08:33:16Z

Functional Unit Detail (Optional Layer)

← Older revision		Revision as of 10:33, 6 May 2025
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	If the Reference Unit is set to '''FU (Functional Unit)''', an additional layer may be used:		If the Reference Unit is set to '''FU (Functional Unit)''', an additional layer may be used:

	* '''FU Key''': A standardized code or string representing the functional unit ~~(e.g.~~, ~~`wash_5kg_cotton_40C`)~~		* '''FU Key''': A standardized code or string representing the functional unit,optional if standardized, example is "DFU", for Daily Food Unit
	* '''FU Description''': A localized, human-readable explanation (~~e.g., "~~Een wasbeurt van 5kg katoen op 40°C~~" in Dutch)~~		* '''FU Description''': A localized, human-readable explanation, example
			** English (eng): A wash cycle of 5 kg of cotton at 40°C
			** Dutch (dut): Een wasbeurt van 5kg katoen op 40°C

	This structure supports multilingual declarations and precise LCA communication.		This structure supports multilingual declarations and precise LCA communication.

HansdG at 08:21, 6 May 2025

2025-05-06T08:21:46Z

← Older revision		Revision as of 10:21, 6 May 2025
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	== Purpose ==		== Purpose ==

	The Reference Unit defines what the value is expressed per and is a core component of standardized environmental declarations. It is distinct from the [[Value Unit ~~- TX~~]], which expresses what the value is measured in.		The Reference Unit defines what the value is expressed per and is a core component of standardized environmental declarations. It is distinct from the [[Value_unit_-_TX\|Value Unit]], which expresses what the value is measured in.

	== Common Reference Units ==		== Common Reference Units ==
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	In the IMDE model, each environmental declaration includes:		In the IMDE model, each environmental declaration includes:

	* The [[Value Unit ~~- TX~~]] — e.g., `kg CO₂eq`		* The [[Value_unit_-_TX\|Value Unit]] — e.g., `kg CO₂eq`
	* The '''Reference Unit''' — e.g., `per kg`, `per FU`, `per SU`		* The '''Reference Unit''' — e.g., `per kg`, `per FU`, `per SU`
	* Optional: FU Key and Description for functional units		* Optional: FU Key and Description for functional units

HansdG: Created page with "'''Reference Unit''' specifies the basis or denominator for which a declared environmental impact or quantitative value is expressed. It answers the question: “Per what amount of product, material, or function is this value valid?” Reference Units allow for contextualizing environmental impact data such as carbon footprint or water use. They ensure that values are comparable and meaningful within and across products, categories, and use scenarios. == Purpose == Th..."

2025-05-06T08:20:47Z

Created page with "'''Reference Unit''' specifies the basis or denominator for which a declared environmental impact or quantitative value is expressed. It answers the question: “Per what amount of product, material, or function is this value valid?” Reference Units allow for contextualizing environmental impact data such as carbon footprint or water use. They ensure that values are comparable and meaningful within and across products, categories, and use scenarios. == Purpose == Th..."

New page

'''Reference Unit''' specifies the basis or denominator for which a declared environmental impact or quantitative value is expressed. It answers the question: “Per what amount of product, material, or function is this value valid?”

Reference Units allow for contextualizing environmental impact data such as carbon footprint or water use. They ensure that values are comparable and meaningful within and across products, categories, and use scenarios.

== Purpose ==

The Reference Unit defines *what the value is expressed per* and is a core component of standardized environmental declarations. It is distinct from the [[Value Unit - TX]], which expresses *what the value is measured in*.

== Common Reference Units ==

{| class="wikitable"
! Reference Unit !! Key !! Description
|-
| Kilogram || kg || Value is expressed per 1 kg of product or material.
|-
| Liter || L || Value is expressed per 1 liter of product (common for liquids).
|-
| Functional Unit || FU || A defined reference scenario for use (e.g., one wash, 1000 hours of use).
|-
| Sales Unit || SU || The actual product unit as sold (e.g., a single package, bottle, or device).
|}

== Functional Unit Detail (Optional Layer) ==

If the Reference Unit is set to '''FU (Functional Unit)''', an additional layer may be used:

* '''FU Key''': A standardized code or string representing the functional unit (e.g., `wash_5kg_cotton_40C`)
* '''FU Description''': A localized, human-readable explanation (e.g., "Een wasbeurt van 5kg katoen op 40°C" in Dutch)

This structure supports multilingual declarations and precise LCA communication.

== Use in IMDE ==

In the IMDE model, each environmental declaration includes:

* The [[Value Unit - TX]] — e.g., `kg CO₂eq`
* The '''Reference Unit''' — e.g., `per kg`, `per FU`, `per SU`
* Optional: FU Key and Description for functional units

This modular structure enables flexible data modeling across industries and life cycle stages.

== Examples ==

* Climate Change: 0.85 '''kg CO₂eq''' '''per kg''' of detergent
* Water Use: 12.3 '''m³''' '''per FU''', where FU = 1 wash cycle (see FU key/description)
* Energy Use: 1.1 '''MJ''' '''per SU''', where SU = 1 LED bulb (retail package)

== See Also ==

* [[Value Unit - TX]]
* [[Functional Unit - TX]]
* [[LCA Environmental Impact Indicators]]
* [[IMDE Data Model]]

[[Category:Taxonomy]]