Renewable Energy Sources in Construction of Energy Efficient Residential Buildings

2020 ◽  
pp. 709-719
Author(s):  
Miron Torlo ◽  
Ismar Kreso ◽  
Šunje Edin
Keyword(s):  
Renewable Energy ◽  
Energy Efficient ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals Improving the Efficiency of Heat Power Generation from Household Drains

2019 ◽  
Vol 62 (5) ◽  
pp. 482-498 ◽  
Author(s):  
S. N. Osipov ◽  
A. V. Zakharenko
Keyword(s):  
Waste Water ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Heat Exchanger ◽  
Energy Efficient ◽  
Cold Water ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Secondary Energy

Minimization of consumption by the buildings during exploitation of energy resources produced of non-renewable energy sources is the main objective of modern energy efficient construction. Currently, there are two principal solutions to this issue: the use of renewable energy sources (such as solar energy, geothermal energy, etc.) and optimization of secondary energy consumption. The paper considers one of the main approaches of secondary energy consumption, which is advisable to use in residential buildings, viz. the use of heat of household drains. Taking into account the fact that in modern energy-efficient buildings a significant amount of energy is still spent on hot water supply, one of the options for optimizing this process is the reuse of waste water heat as the initial source of heating of cold water supplied to the building. The design and technological solution of the heat exchanger, which will make the most efficient use of waste water heat for heating cold tap water possible, is proposed. A characteristic feature of the heat exchanger is the providing a screw movement of waste water along the internal standpipe. At the same time, cold water moves evenly along its outer contour, gradually being heated up from household drains. The key problem of the considered design solution is the correct choice of the appropriate slope of the screw surface, which will ensure the maximum transfer of heat to cold water and at the same time provide a quality drain, eliminating the possibility of clogging and stagnation of small particles. In order to solve this problem an assessment of the existing theoretical and practical approaches to the provision of water flow in technological pipelines which allows determining the optimal value of the slope of the surface has been fulfilled.

scholarly journals Optimisation of Energy Accumulation for Renewable Energy Sources

2021 ◽  
Vol 19 ◽  
pp. 205-210
Author(s):  
Milan Belik ◽  
Keyword(s):  
Renewable Energy ◽  
Model Building ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Photovoltaic System ◽  
Energy Sources ◽  
Pv System ◽  
Energy Accumulation ◽  
Wind Power Station ◽  
Future Production

This project focuses on optimisation of energy accumulation for various types of distributed renewable energy sources. The main goal is to prepare charging – discharging strategy depending on actual power consumption and prediction of consumption and production of utilised renewable energy sources for future period. The simulation is based on real long term data measured on photovoltaic system, wind power station and meteo station between 2004 – 2021. The data from meteo station serve as the input for the simulation and prediction of the future production while the data from PV system and wind turbine are used either as actual production or as a verification of the predicted values. Various parameters are used for trimming of the optimisation process. Influence of the charging strategy, discharging strategy, values and shape of the demand from the grid and prices is described on typical examples of the simulations. The main goal is to prepare and verify the system in real conditions with real load chart and real consumption defined by the model building with integrated renewable energy sources. The system can be later used in general installations on commercial or residential buildings.

Ecological houses of Southern Kazakhstan using renewable energy sources

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ardasher Namazbay Yussupov ◽  
Akmaral Ardasherovna Yussupova
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Building Materials ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Local Population ◽  
Climatic Conditions ◽  
Energy Sources ◽  
Content Type ◽  
Wide Range

PurposeThe purpose of this article discusses the design of underground eco-houses using a dome structure of light construction while taking into account the historical experience of the development of the local population. This article considered the traditions of folk architecture and modern sophistication in the creation of energy-efficient eco-houses in foreign countries in the context of architecture and construction of affordable residential homes for the local population.Design/methodology/approachThe research presented in this paper was motivated by the need for developing agro-tourism facilities in hard-to-reach areas of the Silk Road in Southern Kazakhstan causes the construction of eco-houses built using local construction materials. Since ancient times in Southern Kazakhstan and during seasonal migrations in yurts of light construction, people have lived in mud-brick houses deep in the ground. Along with architectural and artistic solutions in building construction, great importance was attached to saving material resources, labour costs and achieving heat stability of residential buildings.FindingsIn the architectural and planning solution of the eco¬-house, progressive directions of construction of agrotechnical structures using renewable energy sources are adopted. Particular importance was given to the choice of the construction site on an elevated area nearby historical monuments and a favourable season for the construction of eco-houses with considering the natural and climatic characteristics of rural areas of Southern Kazakhstan.Research limitations/implicationsThis paper discussed the issues of insulation, ventilation and improving the eco-house microclimate comfort using local building materials. Improving the architectural and artistic expressiveness of the eco-house in terms of the tradition of folk architecture was also explicitly discussed in this paper.Practical implicationsTables with the justification of expediency of construction of economical eco-houses in natural and climatic conditions of Kazakhstan and Central Asia are provided. The results help to improve the energy efficiency of eco-houses in Kazakhstan by using renewable energy sources.Social implicationsSocial benefits are associated with the use of local raw materials. Eco-houses built from traditional building materials can become accessible to a wide range of people and stimulate the development of small businesses. This may be associated with the construction of eco-houses to serve visiting tourists in remote picturesque oases, as well as the manufacture of dome structures, felt products and the preparation of reed panels and so on.Originality/valueThe thermotechnical characteristics of the region's ground energy are given, which can significantly save the cost of heating the eco-house. Solutions for optimal insolation, ventilation of the eco-house are provided, taking into account the natural and climatic conditions of Southern Kazakhstan.

Research on New Technology of Energy Efficient Buildings and Utilization of Renewable Energy Sources

2011 ◽  
Vol 224 ◽  
pp. 104-108
Author(s):  
Ya Guang Sun
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Efficient ◽  
New Technology ◽  
Renewable Energy Sources ◽  
Building Design ◽  
Energy Sources ◽  
Building Technology ◽  
Energy Efficient Buildings ◽  
Energy Efficient Building

Current social development is pressing for energy efficient buildings. The trend of consistent updating of energy-efficient building technology reflects the importance and urgency of energy efficiency in buildings. Through analysis on the current situation of building development, it can be obtained that the energy efficient buildings as well as utilization of renewable energy sources in buildings will be bound to be one of main topics for discussion in future building design.

scholarly journals Towards Nearly-Zero Energy in Heritage Residential Buildings Retrofitting in Hot, Dry Climates

2021 ◽  
Vol 13 (24) ◽  
pp. 13934
Author(s):  
Hanan S. S. Ibrahim ◽  
Ahmed Z. Khan ◽  
Yehya Serag ◽  
Shady Attia
Keyword(s):  
Renewable Energy ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Energy Performance ◽  
High Energy ◽  
Energy Sources ◽  
Zero Energy ◽  
Building Stock ◽  
Heritage Buildings ◽  
Dry Climates

Retrofitting “nearly-zero energy” heritage buildings has always been controversial, due to the usual association of the “nearly-zero energy” target with high energy performance and the utilization of renewable energy sources in highly regarded cultural values of heritage buildings. This paper aims to evaluate the potential of turning heritage building stock into a “nearly-zero energy” in hot, dry climates, which has been addressed in only a few studies. Therefore, a four-phase integrated energy retrofitting methodology was proposed and applied to a sample of heritage residential building stock in Egypt along with microscale analysis on buildings. Three reference buildings were selected, representing the most dominant building typologies. The study combines field measurements and observations with energy simulations. In addition, simulation models were created and calibrated based on monitored data in the reference buildings. The results show that the application of hybrid passive and active non-energy generating scenarios significantly impacts energy use in the reference buildings, e.g., where 66.4% of annual electricity use can be saved. Moreover, the application of solar energy sources approximately covers the energy demand in the reference buildings, e.g., where an annual self-consumption of electricity up to 78% and surplus electricity up to 20.4% can be achieved by using photo-voltaic modules. Furthermore, annual natural gas of up to 66.8% can be saved by using two unglazed solar collectors. Lastly, achieving “nearly-zero energy” was possible for the presented case study area. The originality of this work lies in developing and applying an informed retrofitting (nearly-zero energy) guide to be used as a benchmark energy model for buildings that belong to an important historical era. The findings contribute to fill a gap in existing studies of integrating renewable energy sources to achieve “nearly-zero energy” in heritage buildings in hot climates.

scholarly journals Demand Side Flexibility Potential and Comfort Performance of Non-Residential Buildings

2021 ◽  
Vol 2069 (1) ◽  
pp. 012151
Author(s):  
Georgios Chantzis ◽  
Panagiota Antoniadou ◽  
Maria Symeonidou ◽  
Effrosyni Giama ◽  
Simeon Oxizidis ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Indoor Environment ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Energy Performance ◽  
Energy Sources ◽  
Demand Side ◽  
Eu Directive ◽  
The Eu

Abstract The need to create and maintain a sustainable indoor environment is now more than ever compelling. Both the legislation framework concerning the energy performance of buildings, as determined in its evolution through the EU Directives 2010/31/EU, 2012/27/EU and 2018/844/EU, and the European strategic plans towards green buildings, denote the need of sustainability and comfort of indoor environment for the occupant. Moreover, the EU Directive 2018/2001 sets the renewable energy target of at least 32% for 2030, denoting that the high renewable energy sources penetration level leads to challenges in the design and control of power generation, transmission and distribution. Demand side management may be able to provide buildings with the energy flexibility needed, in order to utilize the intermittent production of Renewable Energy Sources in a much more efficient and cost-effective way. The flexibility potential of installed building systems is investigated, while considering the effects on the indoor environment conditions and the perceived comfort. The implemented Demand Response (DR) control strategy shifts loads by changing heating system set point temperatures, based on market clearing prices of the day ahead market. The results indicated a reduction in energy consumption and energy costs, while maintaining indoor environment quality at satisfactory levels.

Electric energy storage units for distributed energy systems

2020 ◽  
Vol 2 (4) ◽  
pp. 219-230
Author(s):  
P. A. Khlyupin
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Efficient ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Electric Machines ◽  
Energy Sources ◽  
Storage Unit ◽  
Electric Energy Storage ◽  
Storage Units

Introduction: there is much concern about power supply to small and remote villages and industrial facilities, such as crude oil and gas fields, in the present-day power industry. Systems using renewable energy sources are the most innovative solutions to this problem. The need for electric energy storage units complicates the use of renewable energy sources. Versatile types of storage units, working on different principles, are in use now. Flywheels, working on the principle of mechanical accumulation of energy, are of particular interest.Methods: both traditional and advanced designs of electric energy accumulation systems are analyzed in the article. Recent advancements in machine building, power engineering and structural materials are contributed into structural elements of an electric energy accumulation system.Results and discussion: basic strengths and weaknesses of electric energy storage units were identified in the course of the analysis. The author substantiated the need for new effective electric energy storage units working on the principle of mechanical accumulation of potential and kinetic energy. The conclusion is that advanced engineering solutions, such as flywheels and energy efficient reversible electric machines, can boost the efficiency of electric power storage systems. The solution underlying the design of an energy efficient storage unit is offered to electric power industry players.Conclusion: the storage unit under development has flywheels and energy efficient reversible electric machines. It improves the energy efficiency of both classical power generation systems and those using renewable energy sources.

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