Energy balance evaluation and optimization of photovoltaic systems for zero energy residential buildings in different climate zones of China

Buildings account for 34% of world energy consumption and about half of electricity consumption. The nearly/Net Zero Energy Building (nZEB/NZEB) concepts are regarded as solutions for minimizing this problem. The countries of Southern Europe, which included the nZEB concept recently in their regulatory requirements, have both heating and cooling needs, which adds complexity to the problem. Brazil may benefit from their experience since most of the Brazilian climate zones present significant similarities to the Southern European climate. Brazil recently presented a household energy consumption increase, and a growing trend in the use of air conditioning is predicted for the coming decades. Simulations with various wall and roof solutions following the Brazilian Performance Standard were carried out in a low standard single-family house in three different climate zones in order to evaluate thermal comfort conditions and energy needs. Results show that in milder climate zones, achieving thermal comfort with a low energy consumption is possible, and there is a great potential to achieve a net zero-energy balance. In the extreme hot climate zone, a high cooling energy consumption is needed to provide thermal comfort, and the implementation of a nearly zero-energy balance may be more feasible.

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Photovoltaic systems – types of installations, materials, monitoring and modeling - review

Acta Innovations ◽

10.32933/actainnovations.34.4 ◽

2020 ◽

pp. 40-49 ◽

Cited By ~ 1

Author(s):

Angelika Anduła ◽

Dariusz Heim

Keyword(s):

Energy Efficiency ◽

Energy Consumption ◽

Residential Buildings ◽

Future Research ◽

Photovoltaic Systems ◽

Zero Energy ◽

Thermal Systems ◽

Photovoltaic Panels ◽

Common Solution

Photovoltaic systems have become a common solution for, both small residential buildings as well as large service buildings. When buildings are being designed, it is important to focus on the aspect of the object’s energy efficiency as lowering the energy consumption of a given facility is crucial. The article discusses the use of photovoltaic panels such as so-called BAPV (Building Applied Photovoltaics) and BIPV (Building Installed Photovoltaics) installations as well as photovoltaic thermal systems (PV/T), which generate both electricity and heat. The role of PV installation in so-called zero energy buildings and proposals for future research and solutions are also discussed.

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Energy Renovation of Residential Buildings in Cold Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

Sustainability ◽

10.3390/su12062287 ◽

2020 ◽

Vol 12 (6) ◽

pp. 2287 ◽

Cited By ~ 3

Author(s):

Luis M. López-Ochoa ◽

Jesús Las-Heras-Casas ◽

Luis M. López-González ◽

César García-Lozano

Keyword(s):

European Union ◽

Thermal Insulation ◽

Life Cycle Cost ◽

Residential Buildings ◽

Cold Climate ◽

The European Union ◽

Zero Energy ◽

Climate Zones ◽

Heating And Cooling ◽

Zero Energy Buildings

The residential sector of the European Union consumes 27% of the final energy of the European Union, and approximately two-thirds of the existing dwellings in the European Union were built before 1980. For this reason, the European Union aims to transform the existing residential building stock into nearly zero-energy buildings by 2050 through energy renovation. The most effective method to achieve this goal is to increase the thermal insulation of opaque elements of the thermal envelope. This study aims to assess the energy, environmental and economic impacts of the energy renovation of the thermal envelopes that are typical of the existing multi-family buildings of the 26 provincial capitals in the cold climate zones of Spain. To achieve this goal, the insulation thickness to be added to the walls, roof and first floor framework is optimized by a life cycle cost analysis, and the existing building openings are replaced, thus minimizing both the total heating costs and the total heating and cooling costs. The study uses four thermal insulation materials for four different heating and cooling systems in 10 different models. The results obtained will be used to propose energy renovation solutions to achieve nearly zero-energy buildings both in Spain and in similar Mediterranean climate zones.

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Architectural and engineering solutions for high-rise residential buildings with nearly zero energy balance

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/317/1/012003 ◽

2019 ◽

Vol 317 ◽

pp. 012003

Author(s):

A Kuzhakova ◽

V Kolgashkina ◽

N Shilkin

Keyword(s):

Energy Balance ◽

Residential Buildings ◽

Zero Energy ◽

High Rise

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Improvements of Energy Balance of Existing Residential Buildings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.899.139 ◽

2014 ◽

Vol 899 ◽

pp. 139-142

Author(s):

Mária Budiaková

Keyword(s):

Energy Balance ◽

Architectural Design ◽

Residential Buildings ◽

Residential Building ◽

Heating System ◽

Heat Pumps ◽

Real Estate Market ◽

Point Of View ◽

Zero Energy ◽

The Individual

The paper is oriented on searching for possibilities, which would approach the existing residential buildings to zero energy buildings. Existing residential buildings must remain competitive in the real estate market. Therefore, this paper is focused on progressive solutions, which application will significantly contribute to the approach towards zero energy balance. I have done my research on a concrete residential building in Bratislava. Scientifically I analyze the individual phases of improvement of this residential building. Firstly, I calculate the annual energy balance for individual phases, then I evaluate them. The basic improvement phases of energy balance of concrete residential building: insulation, regulation of heating system, application of heat pumps, application of solar collectors and photovoltaic modules. The scientific outputs are presented by well arranged graphs. Each improvement phase is analyzed in detail with introduced risks and contribution for energy balance. I will point out the problem of incorrect architectural design from the energy point of view, which remains a serious obstacle for further possible improvements with modern technological systems. By this research, I want to point out new possibilities for existing residential buildings.

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