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Eingeladener Vortrag
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The energy demand of private households contributes globally to 36.5% of the total CO2 emissions. To analyze the emissions reduction potential, we conducted a comparative life cycle assessment of a proton exchange membrane fuel cell in a residential application and a conventional system with a stand-alone gas condensing boiler and electricity from a grid mix. The period under review was referred to as the service life of the PEMFC and is assumed to be 10 years (83,038 h of PEMFC). The applicability of this in a single-family house built between 1991 and 2000 under German climatic conditions was investigated. The functional unit is set to the thermal energy demand of 16,244 kWh/a and electricity demand of 4919 kWh/a of a single-family house. The impact assessment method “CML 2001–August 2016” was used in this investigation. The manufacturing phase of the proton exchange membrane fuel cell showed disadvantages, whereby the use phase had significant advantages in most of the environmental impact categories as compared to the conventional energy supply system. Considering the whole life cycle, the advantages from the use phase could outperform the disadvantages from the manufacturing phase in most of the impact categories, except for ADP elements and TETP.
Resource efficiency is a much discussed topic in terms of improving
the sustainability of energy related and energy non-related
products. Resource efficiency aspects such as the availability
of spare parts, the ability to dismantle, etc. have been included
in draft working documents in the revision of several already
existing Ecodesign regulations as a first step. However, often
these aspects are not consistent with the current technology and
design of these products. A possible reason could be a lack of
sufficient consultation or of a methodology which is sufficiently
tailored for this topic. The established strategies and tools, used
by policymakers, such as the Methodology for the Ecodesign
of Energy-related Products (MEErP), do not seem to deal with
these aspects appropriately. Draft requirements need to be very
well developed before being discussed with member states and
other related stakeholders, because including resource efficiency
parameters could lead to additional, very wide-ranging effects
on society. This topic cannot be covered well with legislative
tools developed primarily for energy aspects. In this paper, a
method is presented which can be used to combine products’
properties with crucial resource efficiency indicators. The method
can be used to develop a set of draft legislative requirements
and to pre-evaluate these requirements by target groups which
would be affected by additional legal requirements. These include:
market surveillance authorities, standardization organizations,
manufacturers and their associations, environmental
organizations and research facilities. The method incorporates
stakeholders’ feedback to identify potential resource efficiency
measures for materials and/or products, their impact on the
European ecology, economy and society. Based on this it would
help to develop legislative requirements which are feasible and
desirable. The results can then be fed into the formal legislative
process, probably speeding it up.
Resource efficiency is a much discussed topic in terms of improving the sustainability of energy related and energy non-related products. Resource efficiency aspects such as the availability of spare parts, the ability to dismantle, etc. have been included in draft working documents in the revision of several already existing Ecodesign regulations as a first step. However, often these aspects are not consistent with the current technology and design of these products. A possible reason could be a lack of sufficient consultation or of a methodology which is sufficiently tailored for this topic. The established strategies and tools, used by policymakers, such as the Methodology for the Ecodesign of Energy-related Products (MEErP), do not seem to deal with these aspects appropriately. Draft requirements need to be very well developed before being discussed with member states and other related stakeholders, because including resource efficiency parameters could lead to additional, very wide-ranging effects on society. This topic cannot be covered well with legislative tools developed primarily for energy aspects. In this paper, a method is presented which can be used to combine products’ properties with crucial resource efficiency indicators. The method can be used to develop a set of draft legislative requirements and to pre-evaluate these requirements by target groups which would be affected by additional legal requirements. These include: market surveillance authorities, standardization organizations, manufacturers and their associations, environmental organizations and research facilities. The method incorporates stakeholders’ feedback to identify potential resource efficiency measures for materials and/or products, their impact on the European ecology, economy and society. Based on this it would help to develop legislative requirements which are feasible and desirable. The results can then be fed into the formal legislative process, probably speeding it up.
Neues Energielabel
(2018)