Papers by Keyword: Energy Simulation

Abstract: As global climate change intensifies, a pivotal shift towards renewable energy sources becomes imperative. Given its adaptability and efficacy, solar cell technology stands out as a frontrunner in the quest to combat environmental degradation. With the vast expanse of buildings occupying significant portions of the urban landscape, integrating photovoltaics into building design is a timely necessity. Before embarking on tangible installations, conducting an energy simulation proves invaluable in gauging a building's energy requirements, ensuring cost and time efficiency. This paper delves into the advanced materials employed in solar cell technology and undertakes an energy simulation for a photovoltaic module. Building-Integrated Photovoltaics is not just an innovative leap in harnessing solar energy but also symbolizes the synergy between architectural design and energy production. By fine-tuning system operations and comprehending external factors, Building-Integrated Photovoltaics points to a future where energy solutions are both sustainable and tailored to a wide range of applications.

Abstract: The analysis of life cycle energy (LCE) and life cycle carbon (LCC) of building were performed in this study in order to identify the solutions for reducing energy-related carbon emission throughout building life time. The influence factors associated with building envelop materials (wall, insulation, window, window-to-wall ratio) were evaluated. The result showed that operation phase contributed a vast majority (>90%) of LCE and LCC. Only 4% emissions saving could be achieved if autoclaved aerated concrete block, cellulose insulation and triple glazing were implemented with WWR of 0.17. The finding suggested that reducing carbon emission should not only be prioritized through use of high energy efficient materials/technologies but should also integrate energy saving measures since energy demand in tropical country is quite high for cooling building. In addition, increasing a possibility and feasibility for supplying renewable energy should be further investigated importunately.

Abstract: This paper presents a method to support the development of energy management concepts for machine and plant construction. The energy management concepts are required to put the plant components into an energy saving mode during unproductive phases. These concepts then have to be implemented in the control software. Different dependencies in the production and process flow have to be considered when developing the concepts. Due to the complexity of production plants, a supporting simulation tool is planned to be implemented. With the aid of this tool, different energy management concepts and their derived control software can already be validated virtually in the planning and development phase. This presents an energetic extension of the so-called virtual commissioning concept. Conventional virtual commissioning involves only the process operation functionality in a virtual simulation model of the plant. Now, however, energetic functionalities are assigned to the different model components. Thus, a simulation of the energy consumption in different operation modes can be created for each component. Energy management concepts can only be developed if the components’ energy consumption is known in the different scenarios.

Abstract: To find out the optimum building envelope retrofitting methods for timber dwellings in Western Hunan, China, energy efficiency retrofitting strategies of building envelope materials are optimized by an orthogonal test and energy simulation tool, DeST-h. On the premise of protecting their architectural styles, a comprehensive materials retrofitting strategy, a polyurethane foam insulation layer for the double-fir external wall envelope, reed foil for the clay insulation layer roof, using ordinary insulating glass units window material, is provided for the existing timer-structured dwellings in rural area of Western Hunan. After retrofitting, this passive strategy can achieve an energy-saving rate of 64.97%, short 4 years dynamic payback period of investment, and increase by 847h acceptable temperature hours in one year.

Abstract: This paper presents a simulation model, which enables the energetic simulation of complex mechatronic powertrains over complete drive cycles. One focus of this work is on reducing the simulation duration to enable the simulation of extended drive cycles on the one hand, and the possibility to optimize drive cycles on the other hand. Furthermore, the program allows the user to assemble an energetically optimized selection of propulsion components.

Abstract: Unfortunately, buildings are in practice rarely created as expected during the design process. This may be due to changes in the project during the construction, or to poor implementation. Energy consumption of the real building can be significantly different from that theoretically calculated. User behavior and the physical characteristics of buildings and their systems are the main influences for these deviations.This paper deals with a computer simulation quantifying the influence of changes the thermal parameters of a building’s envelope demands of the future energy. Furthermore, it compares the costs and returns of each alternative solution.

Abstract: Energy costs play a decisive role in the operation costs of automotive production companies. Therefore, energy planning in an early conception and planning stage becomes an important topic. This is because the early conception and planning stage has the greatest potential to influence the energy consumption of manufacturing technologies since about 70-80 % of the energy costs are committed during this stage. However, lifetime cost and specifically energy consumption are currently not a determining factor at this stage. The reason is that the prediction of energy costs for complex manufacturing systems are challenging. Previous research approaches in the area of energy planning are limited to detailed planned production. A standardized approach to determine the energy consumption rates at an early stage does not exist. In this context, the EffiPLAS project has therefore proposed to solve this challenge. The aim of this project is to develop a Methods-Energy Measurement approach with elementary energy elements to support the planning process at an early stage, and to develop a modular simulation model for calculating the energy consumption of industrial robots, which complements the energy prediction. In this paper, the basic concept of elementary energy units and their value determination techniques is presented, and the simulation model is outlined. The developed approach will help to predict the prospective energy consumption of complex production equipment so that energy costs can be accounted for in an improved manner within a life-cycle costing comparative analyses.

Abstract: Analyzed and calculated the energy savings of heat reflective coatings applied on multi-storied residential buildings and high-risen commercial buildings in Beijing. Some advices about the application of heat reflective coatings in northern cold region are given. Energy saving effect was evaluated with the building energy simulation in winter and summer while the heat reflective coating is applied on the surface of residential buildings and commercial buildings. Calculating results showed that the energy saving is the most optimal to the multi-storied buildings when the cool roof coatings is coated on the roofs and the glass heat reflective coating is applied on east and west windows. With the high-risen commercial building, the energy saving is noticeable when the glass curtain wall is coated with glass heat reflective coatings. The energy saving rate can reach a maximum of 13%.

Abstract: Aapartment houses account for more than 60% of the total of residential buildings to be built in South Korea. In particular, a high-rise apartment house with 21 floors or more has steadily increased in densely populated areas. The heating and cooling energy demand of the apartment house is greatly affected by the shape and the thermal insulation of its building envelope. In addition to its functional efficiency, the shape of building envelope in a high-rise apartment house is considered to be an important factor for the urban landscape with diverse construction methods and materials. In this study, we analyzed the heating and cooling energy demand depending on the effective heat capacity of building structure and the installation position of thermal insulation materials as the design conditions of high-rise apartment houses. This study used the ECO2 energy analysis program for the building energy efficiency grading certification system in South Korea.

Abstract: In present time, the environmental impact of green buildings on inner and outer climate has becomes more apparent. Green buildings are designed to reduce the overall impact of the built environment on human health and the natural environment. Recently, the popularity of green roof is growing in the context of urban landscaping because of its smaller footprint, aesthetic value, insulation benefits and heat island mitigation impact. Greenery roofs are considered to be a part of new technology that allows the use of alternative vegetation. This paper will explore the potentials of using green roofs as an integral part of the building process to save energy. This paper will introduce the energy crisis and will focus on the current crisis in Egypt and the global UHI effect. It will also identify the impact of vegetation as a sustainable approach for UHI mitigation and energy savings. After addressing green roof types, and their functional, and environmental aspects in general. The paper distills these different types to enhance thermal performance in terms of indoor thermal comfort and energy savings with the integration of PV cells within green roof design. This will be empirically examined by DesignBuilder and EnergyPlus Simulation, to explore the possibilities of improving indoor thermal comfort within the studied types. Then the paper will be concluded by a set of recommendations for buildings within Egypt’s climatic settings.