Papers by Peter Tzscheutschler
Encyclopedia of Energy, 2004
Emission reduction targets as well as the scarcity of fossil resources make a transition of the e... more Emission reduction targets as well as the scarcity of fossil resources make a transition of the energy system towards a carbon free electricity supply necessary. Promising energy resources are solar and wind energy. The challenging characteristics of the high temporal and geographic variability of these resources make a systematic analysis of the integration necessary. Subject of this study is the how such a renewable-based energy system ideally should be designed. We investigate the optimal structure of a prospective renewable-based power supply system on two different scales: on the global and on a European level. The paper describes the applied simulation technique employed to combine an adequately precise geographical coverage with high temporal resolution. A linear optimization algorithm determines the cost optimal configuration of the prescribed energy system. As results we obtain ideal energy mixes, generation sites, storage and interregional power transmission capacities req...
The tool we are developing provides users with recommendations for the construction of building e... more The tool we are developing provides users with recommendations for the construction of building envelope and energy supply system, taking climate and location into account. The main goal is to increase energy efficiency of buildings by including the subject of energy consumption in the very early stage of design. The envelope evaluation is based on single office simulation -the energy plant requires building loads. To link the envelope and plant selection, we performed test simulations to show if the loads obtained during single office simulation can be used to approximate total building load, just by scaling the results. Comparisons of building simulation results with scaled results of single office simulation have confirmed that for early cooling load estimation of an office building, planed to be built in Shanghai, it is enough to simulate just one office for all necessary orientations and scale the result. The scaled result and the loads of the internal zone should be summed up to obtain the building load. This approach ensures fast and flexible method for estimation of energy demand and plant capacity. In addition, it is possible change the planed building size without the need for additional simulations.
In view of resource scarcity and environmental issues, transition of the current energy system to... more In view of resource scarcity and environmental issues, transition of the current energy system towards a renewable-based supply seems to be a necessity. The interesting questions within this framework are how such a renewable-based energy system should be structured, and how costly it might be. We investigated the optimal structure of a prospective renewable-based power supply system on the world wide scale. This paper describes the applied simulation technique, which integrates an adequately precise geographical coverage with high temporal resolution. This methodology provides the requirements to properly mimic the geographical dependencies of energy supply and demand as well as short term intermittent patterns of renewable sources. A linear optimization algorithm determines the cost optimal configuration of the prescribed energy system.
Applied Energy, 2015
ABSTRACT Energy management system (EMS) within buildings has always been one of the main approach... more ABSTRACT Energy management system (EMS) within buildings has always been one of the main approaches for an automated demand side management (DSM). These energy management systems are supposed to increase load flexibility to fit more the generation from renewable energies and micro co-generation devices. For EMS to operate efficiently, it must learn ahead about the available supply and demand so that it can work on supply–demand matching and minimizing the imports from the grid and running costs. This article presents a simple efficient day-ahead electrical load prediction approach for any EMS. In comparison to other approaches, the presented algorithm was designed to be apart of any generic EMS and it does not require to be associated with a prepared statistical or historical databases, or even to get connected to any kinds of sensors. The proposed algorithm was tested over the data of 25 households in Austria and the results have shown an error range that goes down to 8.2% as an initial prediction.
ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, ESDA2010, 2010
ABSTRACT The European Union recently established an ambitious target by 2020 that consists of inc... more ABSTRACT The European Union recently established an ambitious target by 2020 that consists of increasing the utilization of renewable energy up to 20%, reducing its overall pollutant emissions to at least 20%, and achieving a primary energy saving of 20% compared to reported 1990 levels. This aim could be reached only with strong effort in different sectors, such as residential, commercial, industry, tertiary, transportation, .... In particular in the European Union a remarkable contribution to energy consumption and CO2 emissions is concentrated in residential and commercial sector. The introduction of more efficient technologies in these sectors could help in achieving the results expected by 2020. An option is given by cogeneration, defined as the combined “production” of electric and/or mechanical and thermal energy starting from single energy source, that could be considered one of the first elements to save primary energy, to avoid network losses and to reduce the greenhouse gas emissions. In particular, our interest will be focused on the microcogeneration (electric power ≤ 15 kW), which represents a valid and interesting application for residential and light commercial users. The energetic, economic and environmental implications due to the use of small scale cogeneration systems were reported, starting by an experimental research activity performed by the authors and other researchers.
Energy and Buildings, 2011
The European Union recently established an ambitious target by 2020 that consists of increasing t... more The European Union recently established an ambitious target by 2020 that consists of increasing the utilization of renewable energy up to 20%, reducing its overall pollutant emissions by at least 20%, and achieving a primary energy saving of 20% compared to reported 1990 levels. This aim can only be realized with strong effort in different sectors, such as residential, commercial, industry, tertiary, transportation. In particular in the European Union, a remarkable contribution to energy consumption and CO 2 emissions is concentrated in residential and commercial sector. The introduction of more efficient technologies in these sectors could help in achieving the results expected by 2020. An option is given by cogeneration, defined as the combined "production" of electric and/or mechanical and thermal energy starting from single energy source. This technology could be considered one of the first elements to save primary energy, to avoid network losses and to reduce greenhouse gas emissions. In particular, this article focuses on the microcogeneration (electric power ≤ 15 kW), which represents a valid and interesting application for residential and light commercial users. The energy, economic and environmental implications due to the use of small scale cogeneration systems were reported, by means of an experimental research activity performed by the authors and other researchers.
Energy and Buildings, 2014
ABSTRACT Responsive building elements (RBEs), renewable energy sources (RES) and energy storage w... more ABSTRACT Responsive building elements (RBEs), renewable energy sources (RES) and energy storage within the building are considered as a key issue for the development of zero energy/emission buildings. The exploitation at the building scale of RES and of the opportunities offered by the environment can be achieved through the ability of the RBEs to dynamically adapt to changing environmental conditions. Among various concepts, advanced integrated facades (AIFs) are probably one the most promising technologies, due to the important role that the building envelope plays in controlling the energy and mass flows between the building and the outdoor environment. In the framework of a research activity on AIFs, a new multifunctional facade module (MFM), called ACTRESS (ACTive, RESponsive and Solar) has been conceived and a prototype built for analyzing the energy performance and the potentialities of such envelope components. The work presented in the paper introduces the MFM features and illustrates the results of an experimental campaign performed for the winter (heating) season.
Energy, 2006
... in sectors other than transportation, eg direct use of electricity from wind or solar power i... more ... in sectors other than transportation, eg direct use of electricity from wind or solar power in ... because a low-cost gasoline infrastructure is readily established and any future alternative has to ... raw material inputs, which is one of the most critical issues in life cycle assessment [12]. ...
A simplified model of a primary HVAC system comprising an on-off boiler, thermal storage and sola... more A simplified model of a primary HVAC system comprising an on-off boiler, thermal storage and solar thermal collectors is simulated in hourly resolution. The simulation passes the results to an optimization algorithm that sizes the system. The objective is to minimize total costs and reach a desired solar ratio. Results show good model performance and short simulation run time. A global bounded Nelder-Mead method is implemented to calculate optimal system configurations in two case studies. The amount of user input data is minimised to enable optimal plant configuration selection during early building design, but also to avoid the system oversize.
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Papers by Peter Tzscheutschler