Integration of solar thermal collectors into the building envelope of the multifamily housing building in Belgrade

Application of solar thermal collectors as one of the modern architectural concepts, which are based on reduction of energy consumption in buildings and the use of solar energy as a renewable energy source, give the new and significant role to the roofs and facades that become multifunctional structures. The purpose of this paper is to show different design solutions and benefits of integration of solar thermal collectors into the envelope of multifamily housing building in Konjarnik settlement, Belgrade. Considering complexity of integration of active solar systems, the following aspects of integration of solar thermal collectors are discussed: energy, architectural and ecological aspects. Hypothetical models of integration of solar thermal collectors into the existing building envelope are created in order to reduce energy demands for water heating, and thus reduce CO2 emissions. ...........solar thermal collector integration in terms of position and slope, evaluation of the reduction of energy consumption for water heating and thus CO2 emissions for different models and their combinations, and comparison of the results (models)

Obnova zgrada i ugradnja solarnih sustava u održivom razvoju ruralnog turizma

This paper deals with problematic of sustainable development of rural tourism with particular focus on building revitalization and integration of solar systems. The relevant principles and criteria are established and functional and aesthetic, energetic, economic, social and ecological aspects are considered. The possibilities and effects are presented. Several examples of sustainable building revitalization in Europe in rural tourism are presented.Ovaj se rad bavi problematikom održivoga razvoja u ruralnome turizmu s osobitim osvrtom na obnovu zgrada i ugradnju solarnih sustava. U njemu se definiraju relevantni principi i kriteriji, razmatraju estetski, energetski, ekonomski, društveni i ekološki aspekti te analiziraju mogućnosti i rezultati. Rad prezentira i neke europske primjere održive obnove zgrada u održivom razvoju ruralnog turizma

Living closer to the environment: Housing design concept

The main idea of this design concept is to strengthen the relationship and understanding between a man - resident and his environment. Residents are separated from the outdoor environment by glazing, which enables constant observation of environment from nearly all points of indoor space, encouraging positive feelings towards external world and understanding of the fragility of biosphere. Care for the environment should become a part of a man's nature and way of living, and it is the people who are expected to become the driving force of positive global changes towards sustainable development. The semisphere-like single family house of 14m in diameter has a multifunctional, multi-layer 'active' facade envelope. The envelope ensures constant visual contact of residents with the whole surroundings, while still providing comfort. The living space of the house reflects natural shapes which are organic rather than rectangular. Such indoor space becomes a part of the environment, rather than being protected, distanced and isolated from it. The house is designed to use solar energy 'passively' by absorption through insulated glazed envelope and 'actively' by outer skin layer on the first floor, made of stripes of flat semi-transparent polycrystalline photovoltaic (PV) panels. In addition to its constructive role, the concrete core of the house acts as thermal mass and enables absorption and accumulation of thermal energy. The developed housing concept is applicable in different urban-design units and sets

Living closer to the environment: Housing design concept

The main idea of this design concept is to strengthen the relationship and understanding between a man - resident and his environment. Residents are separated from the outdoor environment by glazing, which enables constant observation of environment from nearly all points of indoor space, encouraging positive feelings towards external world and understanding of the fragility of biosphere. Care for the environment should become a part of a man's nature and way of living, and it is the people who are expected to become the driving force of positive global changes towards sustainable development. The semisphere-like single family house of 14m in diameter has a multifunctional, multi-layer 'active' facade envelope. The envelope ensures constant visual contact of residents with the whole surroundings, while still providing comfort. The living space of the house reflects natural shapes which are organic rather than rectangular. Such indoor space becomes a part of the environment, rather than being protected, distanced and isolated from it. The house is designed to use solar energy 'passively' by absorption through insulated glazed envelope and 'actively' by outer skin layer on the first floor, made of stripes of flat semi-transparent polycrystalline photovoltaic (PV) panels. In addition to its constructive role, the concrete core of the house acts as thermal mass and enables absorption and accumulation of thermal energy. The developed housing concept is applicable in different urban-design units and sets

Improvement of energy performances of existing buildings by application of solar thermal systems

Improvement of energy performances of the existing buildings in the suburban settlement Konjarnik in Belgrade, by the application of solar thermal systems is the topic presented in this paper. Hypothetical models of building improvements are created to allow the benefits of applying solar thermal collectors to residential buildings in Belgrade climate conditions to be estimated. This case study presents different design variants of solar thermal collectors integrated into a multifamily building envelope. The following aspects of solar thermal systems integration are analyzed in the paper: energy, architectural, ecological and economic. The results show that in Belgrade climatic conditions significant energy savings and reduction of CO2 emissions can be obtained with the application of solar thermal collectors

Improvement of energy performances of existing buildings by application of solar thermal systems

Improvement of energy performances of the existing buildings in the suburban settlement Konjarnik in Belgrade, by the application of solar thermal systems is the topic presented in this paper. Hypothetical models of building improvements are created to allow the benefits of applying solar thermal collectors to residential buildings in Belgrade climate conditions to be estimated. This case study presents different design variants of solar thermal collectors integrated into a multifamily building envelope. The following aspects of solar thermal systems integration are analyzed in the paper: energy, architectural, ecological and economic. The results show that in Belgrade climatic conditions significant energy savings and reduction of CO2 emissions can be obtained with the application of solar thermal collectors.

Potential solar energy use in a residential district in Niš

Serbia is a suitable place for solar energy exploitation with more than 2000 sunny hours per year over 80% of its territory. In the paper, the existing state is analyzed and the possibilities of solar energy use are examined by employing a combined approach. This relies on the following elements: an attached conservatory with remote heat storage for space heating in the period October-April; a canopy covered by flexible organic photovoltaic modules for electricity production in the period May- September, and a solar water heating system throughout the year. In addition to an analysis of energy performance of the proposed design solution, its economic aspect is also discussed, which suggests that investing in energy efficiency projects should be encouraged provided the state adopts an appropriate system of subsidies for the use of renewable energy sources

Improvement of energy performances of existing buildings in suburban settlements

The research on improvement of energy performances of the existing building in suburban settlement Konjarnik in Belgrade, by application of active solar systems: solar thermal collectors and PV modules, is presented in the paper. The case study shows different design variants of integration of solar thermal collectors and PV modules in envelope of a multifamily building. Considering integration complexity of active solar systems, the following aspects of active solar systems integration are analyzed in the paper: energy, architectural, ecological and economic aspects. Keeping in mind all these aspects, parameters and criteria for evaluation of design variants are established. According to the established evaluation methodology, the design variant with the highest evaluation value is selected as optimal

General model of solar water heating system integration in residential building refurbishment-Potential energy savings and environmental impact

The building sector, which accounts for about 40% of total energy consumption in Europe, offers various possibilities for achieving higher energy efficiency by introducing distributed RES. As 20% of total energy consumption in this sector is used for water heating, it follows that 8% of total energy in Europe is consumed for water heating purposes, which provides great opportunities for energy savings. Solar water heating systems (SWHSs) are a suitable technology for renewable energy source (RES) exploitation to be applied in residential building refurbishment that generate both fossil fuel savings and reductions in CO2 emissions. Due to its complexity, SWHS integration requires a comprehensive approach including consideration of the functional and aesthetic, energy performance, and economic and ecological aspects from conceptual design through to design realization. This article defines a general model of SWHS integration in residential building refurbishment. The model is divided into several basic phases in order to facilitate problem-solving and to enable the individual optimization processes for variant design. The phases are systematically analyzed and a proper procedure and/or methods are established to solve them. At the very beginning of the suggested problem-solving procedure, the measures 'Building Potential', (P) over tilde (B), and 'Degree of Feasibility', p(B), are first introduced in order to estimate the suitability of SWHS integration. A Multi-Criteria compromise ranking method, is recommended for a comprehensive evaluation of design variants and for the selection of the optimal SWHS integration Design Variant. The proposed general model is also applied for solving a real problem - namely, the integration of SWHS through the refurbishment of residential buildings in the suburb of "Konjarnik" in Belgrade, Serbia, which is one of the many that were built in Belgrade after the Second World War

Potential for reduction of CO2 emissions by integration of solar water heating systems on student dormitories through building refurbishment

This paper shows benefits that could be achieved by substituting conventional fuel oil, electricity or gas based water heating systems with solar water heating systems (SWHSs) through the dormitories refurbishment. There are 12 dormitories in Belgrade, housing about 11,000 students. Total living area is 147264.8 m(2) and daily hot water consumption is 406,7201 what constitutes appreciable potential for substitution of fossil fuels with SWHSs. The dormitory "Karaburma", having one of the highest potential for SWHSs integration according to the established set of criteria, is selected to demonstrate the effects that could be achieved through SWHS integration. Several design options with integrated solar thermal collectors (STCs) were analyzed and evaluated. A multi-criteria compromise ranking method was used for a comprehensive evaluation of the design options and for selection of the optimal one regarding the conflicting criteria: energy performance, economic, ecological, functional and aesthetic aspects. The results are presented and the main factors influencing design are distinguished and discussed