DBU study on climate characteristics of timber buildings
Published
The study "Method development for the description of target values for primary energy consumption and CO2 equivalent of building constructions for linking with property allocation and quality assurance up to design planning" by the RuhrUni Bochum under the leadership of Prof. Dr. Annette Hafner is now published and available for download.
Online tool simplifies calculation of resource efficiency
Photo: Factor X Agency, Inden
With funding from the federal support programme "Unternehmen Revier", the Factor X agency of the development company has developed an internet-based tool for the simple calculation of the resource efficiency of one's own building project. The tool has now undergone final testing and will be available online from September.
With the Factor X construction method, the entire life cycle of buildings is considered, resulting in many new opportunities for saving raw materials and thus for climate- and resource-saving construction. Until now, the resource efficiency of buildings has been calculated using a spreadsheet as part of the Factor X Agency's construction consultancy service. This is now to be made even easier by the new online tool, which will be accessible to the public via the Internet. The database-based tool was realised with funding from the federal support programme "Unternehmen Revier".
At the invitation of the Fakor X agency, the almost completed online tool was subjected to a final test. Fifteen testers from science, administration and building practice checked the user guidance and calculated test buildings. The concept was praised by all testers. A few suggestions for improvement are still being incorporated into the programming before the online tool is released in September and will then be available.
Initiator Klaus Dosch, head of the Factor X Agency of the indeland development company, is enthusiastic: "Here we are setting up a tool for climate- and resource-friendly construction that does not yet exist in Europe. Even non-specialists interested in construction are supported by our tool in such a way that they can very easily calculate the resource efficiency of their building project. We have created a link to the building materials database of the Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR). For the first time, we are making the construction life cycle understandable for laypeople."
Improving resource efficiency in the construction of housing estates is an essential part of the strategy of the indeland 2030 master plan of the development company indeland GmbH. A number of strategies lead to the achievement of these goals and have been tested in the Faktor X settlements in Eschweiler and Inden. With the development of strategies and projects for sustainable building and living, indeland has long since taken on a lighthouse function far beyond the region. Together with the exhibition already opened in May, the tool is intended to contribute to the illustration and dissemination of the Factor X strategies.
Berlin: On 4 May 2018, BUND presented a shutdown plan for nuclear power plants (NPPs) and coal-fired power plants. This analysis shows that the decommissioning of the most climate-damaging coal-fired power plants by 2020 and a significant acceleration of the nuclear phase-out in Germany are possible without jeopardising security of supply. "The shutdown plan is a call to action for the political actors to finally take action," explains BUND Chair Hubert Weiger at the presentation of the shutdown plan in Berlin.
In the shutdown plan, BUND has drawn up a concrete performance balance and names power plants as well as annual figures for the shutdown. The focus is on the years 2020 and 2023. This period is considered to be a particular challenge for supply security, since on the one hand it is the legal date for the phase-out of nuclear power. On the other hand, a good half of the coal-fired power plants must be taken off the grid in order to achieve the German climate target for 2020.
The BUND shutdown plan shows that this is possible and that significantly more coal-fired power plants can be taken off the grid in the short term than has been discussed so far, and that this can also be combined with a significant acceleration of the nuclear phase-out. As a result, the power surplus in Germany is declining, but the supply remains guaranteed even in hours without sun and with little wind. "In the first quarter of 2018, Germany exported on average the electricity production of five large power plants. Against this background alone, it is surprising that the new federal government has not agreed on the short-term decommissioning of the most climate-damaging coal-fired power plants," says the BUND chairman. "We want to show with our analysis that much more is possible if the political will is there."
The BUND shutdown plan shows that security of supply can be ensured if politicians do not continue to wait, but actively promote the energy transition in parallel to the shutdowns. The calculations of the power balance are mainly based on values from, for example, the Federal Network Agency or the transmission system operators. Deviations and other assumptions are justified. "With our analysis, we want to provide an important impetus for a transparent debate within the framework of the amendment to the Atomic Energy Act and the coal phase-out commission that is being constituted," explains Weiger.
In a shutdown list for coal-fired power plants, BUND proposes the units that would have to be taken off the grid first in order to achieve the 2020 climate target. It concerns all larger coal-fired power plants that were connected to the grid before 1990, in order to reduce the coal capacity on the electricity market to 20 gigawatts. As a new measure to enable a socially acceptable coal phase-out and to safeguard security of supply in extreme situations, the environmental association proposes the introduction of an additional coal phase-out reserve of six to eight gigawatts.
"The Paris Climate Agreement requires the phase-out of coal before 2030. The federal government is responsible for achieving the climate targets, it must enshrine the phase-out in law and ensure a just structural change. To achieve the 2020 climate target, it must now launch an immediate programme. Waiting any longer is irresponsible," continued the BUND chair. Due to the inactivity of climate policy in recent years, the German "climate problem" has become increasingly acute. According to the latest emission forecasts, the German climate protection target for 2020 will be missed by ten percentage points.
At the same time as the coal phase-out, the nuclear power plants can also be taken off the grid more quickly than required by law. The seven nuclear power plants that are currently still connected to the grid represent a constant safety risk for the population and must be decommissioned as soon as possible. So far, however, the federal government does not want to use the amendment to the Atomic Energy Act to really accelerate the nuclear phase-out. "BUND demands an immediate nuclear phase-out. At the very least, the current revision of the Atomic Energy Act must be used to legally prohibit further transfers of electricity volumes," says Weiger. Without this transfer, the nuclear power plants would run for a total of ten years less and the production of 300 tonnes of highly radioactive nuclear waste would be avoided.
Getting out of nuclear power and coal and still securing the energy supply - this is possible if the energy transition is driven forward. "It is a matter of further expanding renewable energies with commitment and creating the energy-economic framework conditions for an energy turnaround that is essentially based on wind energy and photovoltaics," says Weiger. This means an expansion of flexible decentralised CHP power plants, a reduction in electricity consumption, optimised utilisation of the electricity grids and a significant increase in the possibilities for load reduction.
According to the PC Price Index, prices for photovoltaic modules from all regions of the world fell by an average of over 15 % to between €0.40 and €0.57/Wp in the last 12 months.
Martin Schachinger from pvXchange commented on this in the SolarServer Infomail of 20 February 2017: "Some rack and inverter manufacturers have also lowered their sales prices across the board, meaning that complete photovoltaic systems are currently available at historically good conditions. As expected, the lowest prices since the beginning of time, at least since module price monitoring and recording began, are leading to a strong increase in demand," says Schachinger.
According to SolarServer Infomail, the cumulative installation volume of over 600 megawatts in November and December equalled almost half of the newly installed photovoltaic systems for the entire year.
In cooperation with the DGNB, the Federal Ministry of Transport and Digital Infrastructure (BMVI) is organising a networking event on Interreg B - an EU programme to promote cooperation in transnational cooperation areas. The event will focus on topics such as Innovation, reducing CO2 emissions, the environment, transport, climate change and governance are the focus of the respective cooperation programmes. Innovative ideas for sustainability and resource efficiency in buildings, urban neighbourhoods and at a city-wide level are also promoted.
The aim of the event is to present exemplary results of completed Interreg projects in the thematic field, to demonstrate the added value of European cooperation, to provide information on specific funding opportunities and funding channels and to discuss questions for future project activities in an exchange of experiences. The event is aimed at newcomers and Interreg professionals alike.
Further information: www.dgnb.de/...Ressourceneffizienz.pdf
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